Technical Handbook - Wholesale NGA National Deployment

Technical Handbook - Wholesale NGA National Deployment
Technical Handbook - Wholesale NGA National Deployment
Technical Handbook
Wholesale NGA National Deployment
Virtual Unbundled Access Products
Bitstream Plus Products
Version 4.0
September 2013
Version 4.0
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September 2013(Published 20 September)
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Technical Handbook - Wholesale NGA National Deployment
Document Control
Version
Date
Revision Details
2.0
19/10/2012
Notification Version
3.0
25/6/2013

Changed wording of “802.1p VLAN ID=10
frames” to “Ethernet frames with a VLAN tag of
10 and 802.1p QoS markings” throughout
document. Also changed on diagrams where it
had labels "802.1p marking (C-VLAN 10)"

Wording changed in Section 1.11.3 to provide a
better description of the Anti-DoS features,
including listing all control traffic. Added
additional information on blacklisting and IP/mac
bindings to the port.

In section ‘QoS and service bandwidth’,
reworded from “For fibre access, at the ONT, a
single End-User port speed will be configured:
150Mbit/s downstream and 30Mbit/s upstream”.
to “for fibre access, at the ONT, a single speed
will be configured: 150Mbit/s downstream and
30Mbit/s upstream”.Added description of DHCP
option 82 remote-id (set to telephone number) in
section 1.4

Added section on FTTC VDSL2 Implementation
and FTTC CPE requirements (page 46)

Added section on WEIL to describe requirement
when WEIL is on non-NGA NGN node (page
40)

Addition of 3 additional extended-reach rate
adaptive profiles to Table 3

Table 3: amended max line length for 18M Rate
Adaptive profile from 1000m to 1200m

Table 4: addition of 4 new profiles – 34M, 12M,
10M and 4M

In FTTC CPE Requirements section, point 4,
changed from “not recommended” to “not
allowed” for B43, B43c and V43 handshake
tones
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Table of Contents
Introduction ....................................................................................................................8
Products Overview .........................................................................................................8
1.1
Virtual Unbundled Access Products ............................................................................................... 8
1.1.1
Virtual Unbundled Access – Unicast ...................................................................................... 8
1.1.2
Virtual Unbundled Access – Multicast ...................................................................................10
1.1.3
Virtual Unbundled Access – Redundancy .............................................................................10
1.2
Bitstream Plus Products ................................................................................................................11
1.2.1
Bitstream Plus – Unicast .......................................................................................................11
1.2.2
Bitstream Plus – Unicast Redundancy ..................................................................................12
1.2.3
Bitstream Plus – Multicast.....................................................................................................13
1.2.4
Bitstream Plus – Multicast Redundancy................................................................................14
Multiple NGA local access VPLS’s/MVPNs per Operator ..............................................................15
1.3
Network Solution Overview – Virtual Unbundled Access .........................................16
1.4
Unicast: End-User → WEIL (E-NNI) Traffic Flow...........................................................................16
1.5
Unicast: WEIL (E-NNI) → End-User Traffic Flow...........................................................................20
1.6
Multicast: End-User → WEIL (E-NNI) Traffic Flow ........................................................................23
Network Solution Overview – Bitstream Plus Products ............................................26
1.7
Unicast: End-User → WEIL (E-NNI) Traffic Flow...........................................................................26
1.8
Unicast: WEIL (E-NNI) → End-User Traffic Flow...........................................................................30
1.9
Bitstream Plus Multicast: End-User → WEIL (E-NNI) Traffic Flow ................................................32
1.10
Unicast Implementation .................................................................................................................35
1.11
Multicast Implementation ...............................................................................................................36
VLAN Management, Forwarding Model and Security ................................................38
1.11.1
VLAN Management ..............................................................................................................38
1.11.2
Forwarding Model .................................................................................................................38
1.11.3
Security .................................................................................................................................39
WEIL and NGA ..............................................................................................................40
QoS and Service Bandwidth ........................................................................................42
FTTC VDSL2 Implementation ......................................................................................46
FTTC CPE Requirements .............................................................................................46
eircom equipment installed at user premises (ONT, NTU) ........................................49
Appendix I – NTU Installation Manual
Appendix II – ONT Installation Manual
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List of Figures
Figure 1: FTTC Virtual Unbundled Access – Unicast ....................................................................................... 9
Figure 2: FTTH Virtual Unbundled Access – Unicast ....................................................................................... 9
Figure 3: Virtual Unbundled Access – Multicast ..............................................................................................10
Figure 4: Virtual Unbundled Access – Redundancy ........................................................................................11
Figure 5: FTTC Bitstream Plus Unicast ...........................................................................................................12
Figure 6: FTTH Bitstream Plus Unicast ...........................................................................................................12
Figure 7: Bitstream Plus Unicast Redundancy ................................................................................................13
Figure 8: Bitstream Plus Multicast ...................................................................................................................14
Figure 9: Bitstream Plus Multicast Redundancy..............................................................................................14
Figure 10: Virtual Unbundled Access: End-User → E-NNI Traffic Flow – single VPLS per Operator .............16
Figure 11 Virtual Unbundled Access: End-User → E-NNI Traffic Flow – multiple VPLS’s per Operator .........17
Figure 12: Virtual Unbundled Access: E-NNI → End-User Traffic Flow – single VPLS instance per Operator
........................................................................................................................................................................20
Figure 13 Virtual Unbundled Access: E-NNI → End-User Traffic Flow – multiple VPLS instances per
Operator ..........................................................................................................................................................21
Figure 14 Virtual Unbundled Access Multicast: End-User → WEIL (E-NNI) Traffic Flow – single VPLS per
Operator ..........................................................................................................................................................23
Figure 15 Virtual Unbundled Access Multicast: End-User → WEIL (E-NNI) Traffic Flow – multiple VPLS’s per
Operator ..........................................................................................................................................................24
Figure 16: Bitstream Plus Fibre/VDSL2 Access: End-User → E-NNI Traffic Flow – single VPLS per Operator
........................................................................................................................................................................26
Figure 17 Bitstream Plus Fibre/VDSL2 Access: End-User → E-NNI Traffic Flow – multiple VPLS’s per
Operator ..........................................................................................................................................................27
Figure 18: Bitstream Plus Fibre/VDSL2 Access: E-NNI → End-User Traffic Flow – single VPLS per Operator
........................................................................................................................................................................30
Figure 19 Bitstream Plus Fibre/VDSL2 Access: E-NNI → End-User Traffic Flow - multiple VPLS's per
Operator ..........................................................................................................................................................31
Figure 20: Bitstream Plus Multicast: End-User → WEIL (E-NNI) Traffic Flow – single VPLS/MVPN per
Operator ..........................................................................................................................................................32
Figure 21: Bitstream Plus Multicast: End-User → WEIL (E-NNI) Traffic Flow – multiple VPLS/MVPN’s per
Operator ..........................................................................................................................................................32
Figure 22: Network Solution – Unicast Traffic .................................................................................................35
Figure 23: Network Solution - Multicast Implementation .................................................................................36
Figure 24: Wholesale Ethernet Interconnect Link ...........................................................................................36
Figure 25: Access Node Forwarding Model ....................................................................................................39
Figure 26 NGA site with WEIL on "non-NGA" NGN node ...............................................................................41
Figure 27: Service Multiplexing and SABs ......................................................................................................44
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List of Tables
Table 1 Mapping of C-VLAN 802.1p bit markings to forwarding classes ........................................................42
Table 2: Multicast Bandwidth Options .............................................................................................................43
Table 3: High Speed Internet Rate Adaptive VDSL2 Profiles..........................................................................45
Table 4: High Stability VDSL2 profiles ............................................................................................................45
Table 5 Overview of FTTC VDSL2 Implementation ........................................................................................46
Table 6 Key Diagnostic and Test parameters to be reported by CPE .............................................................48
Table 7: ONT Specification .............................................................................................................................49
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Acronyms
AES
Advanced Encryption Standard
AF
Assured Forwarding
BGP
Border Gateway Protocol
BPU
Bitstream Plus Unicast
BPM
Bitstream Plus Multicast
CoS
Class of Service
CSID
Calling Station ID
C-VLAN
Customer Virtual Local Area Network
DHCP
Dynamic Host Configuration Protocol
DoS
Denial of Service
DSL
Digital Subscriber Line
DSLAM
Digital Subscriber Line Access Multiplexer
EF
Expedited Forwarding
E-NNI
External Network to Network Interface
EXP
Experimental
FC
Forwarding Class
FTTC
Fibre To The Cabinet
FTTH
Fibre To The Home
FTTx
Fibre To The x
GEM
GPON Encapsulation Method
GPON
Gigabit Passive Optical Network
IGMP
Internet Group Management Protocol
IP
Internet Protocol
LAN
Local Ethernet Network
MAC
Media Access Control
MED
MULTI_EXIT_DISCRIMINATOR (BGP4)
MP-BGP
Multi Protocol-Border Gateway Protocol
MPLS
Multiprotocol Label Switching
MVPN
Multicast VPN
NGA
Next Generation Access
NGN
Next Generation Network
NTU
Network Termination Unit
ODF
Optical Distribution Frame
OLT
Optical Line Terminal
ONT
Optical Network Terminal
PE
Provider Edge
PIM
Protocol Independent Multicast
PON
Passive Optical Network
POTS
Plain old telephone service
QoS
Quality of Service
RP
Rendezvous Point
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SAB
Service Access Bandwidth
S-VLAN
Service - Virtual Local Area Network
UG
Unified Gateway
VDSL
Very high bit-rate Digital Subscriber Line
VLAN
Virtual Local Area Network
VAU
Virtual Unbundled Access Unicast
VAM
Virtual Unbundled Access Multicast
VoIP
Voice over Internet Protocol
VUA
Virtual Unbundled Access
WEIL
Wholesale Ethernet Interconnect Link
WSEA
Wholesale Symmetrical Ethernet Access
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Introduction
The purpose of this document is to provide a technical description of the eircom Wholesale Next
Generation Access (NGA) Fibre To The Home (FTTH) and Fibre To The Cabinet (FTTC) based
products, in order to assist Operators in the design and development of their own product
offerings.
Please note that this is a working document and therefore subject to regular updates as new
products and product enhancements are introduced.
Products Overview
This section provides a high level overview of the eircom Next Generation Access (NGA) fibrebased products. Two separate product ranges are available: Virtual Unbundled Access (VUA) and
Bitstream Plus (BP).
1.1
Virtual Unbundled Access Products
The Wholesale NGA Virtual Unbundled Access (VUA) products provide generic Ethernet access,
with traffic-based CoS, between an End-User’s premises and a WEIL at an Operator’s nominated
handover point. Virtual Unbundled Access is available where the Operator has a presence in the
eircom exchange that has an eircom NGN node connected to the OLT/cabinet DSLAM.
The Virtual Unbundled Access Unicast service provides an individual connection for each EndUser. Unicast traffic from each access node within an eircom NGN node footprint is assigned to a
single Virtual Private LAN Service (VPLS) per Operator. Aggregated End-User traffic belonging to
an Operator within that NGN node footprint is presented in a single VLAN at the point of handover
to the Operator.
1.1.1.1
FTTC Virtual Unbundled Access – Unicast
FTTC Virtual Unbundled Access provides high speed broadband access over a dedicated copper
pair using VDSL2 copper access technology from a streetside cabinet. The service demarcation
point is the Copper NTU in the End-User premises. The VDSL2 bandwidth options are outlined in
1400m
15
3
1700m
12
1
2000m
7
1
Table 3 and Table 4.
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eircom NGN Node
NTU
SAB
eircom Exchange
DSLAM
NTU
eircom
ODF
VPLS
NTU
FTTC VUA
VUA Unicast
Logical Connection
Access
WEIL
Figure 1: FTTC Virtual Unbundled Access – Unicast
1.1.1.2
FTTH Virtual Unbundled Access - Unicast
FTTH Virtual Unbundled Access provides high speed broadband access over a Gigabit Passive
Optical Network (GPON) network. Each End-User port is a 1Gbps 100/1000Base-T interface with
an RJ-45 connector that will have a configured speed of 150Mb/s downstream and 30Mb/s
upstream.
eircom NGN Node
ONT
SAB
eircom Exchange
ONT
OLT
eircom
ODF
VPLS
ONT
FTTH VUA
Access
VUA Unicast
Logical Connection
WEIL
Figure 2: FTTH Virtual Unbundled Access – Unicast
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All Virtual Unbundled Access products can support multicast traffic, which is available as an
additional service. Where multicast is required a dedicated VPLS per Operator is set up to handle
all multicast traffic within the NGN node. Multicast traffic can be presented on a VLAN on the
same SAB as the unicast traffic, or on a dedicated SAB.
NTU
DSLAM
NTU
eircom NGN Node
eircom Exchange
NTU
eircom
ODF
VPLS
ONT
ONT
OLT
ONT
FTTH/FTTC VUA
Access
WEIL
VUA Multicast
Logical Connection
Figure 3: Virtual Unbundled Access – Multicast
Virtual Unbundled Access redundancy allows the Operator to order multiple VUA connections to
multiple WEILs, in order to provide redundancy for the same VUA access traffic. This protects
against failure of the WEIL. Broadcast traffic (e.g. DHCP Discover messages) will be forwarded to
both WEILs. Unicast traffic will be forwarded to one WEIL based on MAC learning in the VPLS.
Split horizon is applied to the VPLS to prevent routing loops.
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NTU
DSLAM
NTU
eircom NGN Node
eircom Exchange
NTU
eircom
ODF
ONT
VPLS
ONT
OLT
ONT
VUA Unicast/Multicast
Access
WEIL
VUA Unicast/Multicast
Logical Connection
Figure 4: Virtual Unbundled Access – Redundancy
1.2
Bitstream Plus Products
The Wholesale NGA Bitstream Plus products provide generic Ethernet access, with traffic-based
CoS, between an End-User’s premises and an Operator’s own network. The Bitstream Plus
products are delivered over Fibre to the Home (FTTH) or Fibre to the Cabinet (FTTC). Each
product provides an enhanced broadband access service between the Service Termination Point
(STP), at the End-User premises, and the WEIL at the Operator’s handover point.
The Bitstream Plus Unicast service supports an individual connection for each End-User. Unicast
traffic from each access node within an NGN node footprint is assigned to a single Virtual Private
LAN Service (VPLS) per Operator. Aggregated End-User traffic belonging to an Operator within
that NGN node footprint is presented in a single VLAN at the point of handover to the Operator.
1.2.1.1
FTTC Bitstream Plus – Unicast
FTTC Bitstream Plus Unicast provides high speed broadband access over a dedicated copper
pair using VDSL2 copper access technology from a streetside cabinet. The service demarcation
point is the Copper NTU in the End-User premises. The VDSL2 bandwidth options are outlined in
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Table 3 and Table 4.
NTU
DSLAM
eircom NGN
Node
eircom NGN
Node
eircom
NGN
NTU
Operator Handover Site
eircom
NTU
VPLS
NTU
SAB
FTTC BP
WEIL
BP Unicast
Logical Connection
Access
Figure 5: FTTC Bitstream Plus Unicast
1.2.1.2
FTTH Bitstream Plus – Unicast
FTTH Bitstream Plus Unicast provides high speed broadband access over a Gigabit Passive
Optical Network (GPON) network. Each End-User port is a 1Gbps 100/1000Base-T interface with
an RJ-45 connector that will have a configured speed of 150Mb/s downstream and 30Mb/s
upstream.
ONT
eircom NGN
Node
ONT
OLT
eircom NGN
Node
eircom
NGN
Operator Handover Site
eircom
NTU
VPLS
ONT
SAB
FTTH BP
Access
BP Unicast
Logical Connection
WEIL
Figure 6: FTTH Bitstream Plus Unicast
Bitstream Plus Unicast Redundancy allows the Operator to order multiple BPU logical connections
to multiple WEILs, in order to provide redundancy for the same BPU access traffic. The VPLS is
local to the NGN node and there are separate E-Line services going to the different WEILs. This
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protects against failure of the BPU connection or the WEIL. Broadcast traffic (e.g. DHCP Discover
messages) will be forwarded to both WEILs. Unicast traffic will be forwarded to one WEIL based
on MAC learning in the VPLS. Split horizon is applied to the VPLS to prevent routing loops.
NTU
DSLAM
NTU
eircom
NGN
NTU
Operator Handover Site A
eircom NGN
Node
eircom NGN
Node
eircom
NTU
ONT
VPLS
ONT
eircom NGN
Node
OLT
eircom
NTU
ONT
Operator Handover Site B
FTTx BP
Access
WEIL
BP Unicast
Logical Connection
Figure 7: Bitstream Plus Unicast Redundancy
All Bitstream Plus products support multicast traffic, which is available as an additional service.
Where multicast is required a dedicated VPLS per Operator is set up to handle all multicast traffic
within an NGN node. All VPLSs for an Operator are joined to a single Multicast VPN (MVPN).
Multicast traffic can be presented on a VLAN on the same SAB as the unicast traffic, or on a
dedicated SAB.
The default implementation of the Bitstream Plus Multicast Service requires a Rendezvous Point
(RP) to be specified by the Operator because the use of IGMPv2 requires PIM-SM and a
Rendezvous Point. If a well-known source address is used, a static mapping (i.e. (*,G) -> (S,G))
can be implemented such that IGMPv2 can continue to be used, but PIM-SM can be replaced with
PIM-SSM. A Rendezvous Point will therefore no longer be required. In that case, when placing the
BPM order, the Operator should specify the source address to which the (*,G) should be mapped
instead of the RP.
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NTU
DSLAM
NTU
eircom
NGN
NTU
eircom NGN
Node
eircom NGN
Node
PE
PE
Operator Handover Site
ONT
VPLS
ONT
PE
OLT
eircom
NTU
MVPN
PE
SAB
ONT
FTTx BP
Access
BP Multicast
Logical Connection
WEIL
Figure 8: Bitstream Plus Multicast
Bitstream Plus Multicast Redundancy allows the Operator to order multiple BPM logical
connections to multiple WEILs, in order to provide redundancy for the same BPM access traffic.
The VPLS service on the NGN node is connected to two separate PE nodes within an NGN
region. This protects against failure of the BPM connection or the WEIL. If both WEILs are
advertising the RP in BGP, then IGMP joins will be forwarded based upon BGP best path
selection. The Operator can influence this using the MED. Split horizon is applied to the VPLS to
prevent routing loops.
Master Socket
DSLAM
Master Socket
eircom NGN
Node
Operator Handover Site A
eircom NGN
Node
eircom
NGN
Master Socket
eircom
NTU
PE
PE
ONT
VPLS
ONT
OLT
MVPN
PE
PE
eircom
NTU
SAB
eircom NGN
Node
ONT
FTTx BP
Access
BP Multicast
Logical Connection
Operator Handover Site B
WEIL
Figure 9: Bitstream Plus Multicast Redundancy
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1.3
Multiple NGA local access VPLS’s/MVPNs per Operator
An Operator may order up to 10 local accesses at each NGA site for each service type (Bitstream
Plus Unicast, Bitstream Plus Multicast, VUA Unicast, VUA Multicast). The traffic is VLAN
separated at the local access, is forwarded into a separate VPLS per VLAN, is carried across the
network in a separate VLL/MVPN (Bitstream Plus only), and may be handed off either at a single
WEIL or separate WEIL handoff points. Within the ordering systems, to distinguish the
VLAN/VPLS instances, they are referred to as ‘Egress Groups’.
When the Operator is placing access orders for individual VDSL/GPON connections, an Operator
who has multiple Egress Groups must specify the Egress Group to which the VDSL/GPON
connection is to be associated. Where an Operator has a single Egress Group, all VDSL/GPON
connections will be associated with ‘Egress Group 1’. The Multicast Egress Group must be linked
to the associated Unicast Egress Group within Bitstream Plus and within VUA.
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Network Solution Overview – Virtual Unbundled Access
This section provides a high-level technical overview of how the eircom Wholesale Virtual
Unbundled Access (VUA) products are supported on the eircom NGN network.
1.4
Unicast: End-User → WEIL (E-NNI) Traffic Flow
1
2
1
4
1
3
1
5
1
7
1
CPE
S-VLAN
ONT
End-User Traffic
802.1p marking (C-VLAN 10)
OLT
S-VLAN
VPLS
Access
Connections
eircom
ODF
C-VLAN
CPE
Operator
Network
eircom Exchange
S-VLAN
NTU
Cabinet DSLAM
1
1a
eircom
NGN
Node
6
2a
Figure 10: Virtual Unbundled Access: End-User → E-NNI Traffic Flow – single VPLS per
Operator
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1
2
1
RG
RG
(CPE)
(CPE)
3
1
4
1
S -VLAN 2
5
1
S - VLAN 2
ONT
RG
RG
(CPE)
(CPE)
S -VLAN 1
S - VLAN 1
eircom
NGN
Node
OLT
ONT
End User Traffic
802.1p marking
VDSL DSLAM
(C -VLAN 10)
VDSL
VDSL
modem
modem
RG
RG
(CPE)
(CPE)
VPLS # 1
S -VLAN 1
C -VLAN
Master
Socket
VPLS # 2
S -VLAN 2
RG
RG
(CPE)
(CPE)
VDSL
VDSL
modem
modem
C -VLAN
Master
Socket
2a
16
3a
17
1a
NTU
Operator
Operator
Network
Network
S -VLAN
S -VLAN 2
Figure 11 Virtual Unbundled Access: End-User → E-NNI Traffic Flow – multiple VPLS’s per
Operator
The following describes how unicast End-User traffic is treated in the End-User → E-NNI direction:
1. Fibre access: End-User broadband traffic is presented to the eircom network at a physical port
on the ONT (Optical Network Terminal) which is installed at the End-User site.
a) VDSL2 access: End-User broadband traffic is presented to the eircom network at the
Copper NTU.
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•
The End-User traffic presented at the ONT/NTU will be VLAN tagged (VLAN 10). The
End-User CPE will generate the Ethernet frames with a VLAN tag of 10 and 802.1p QoS
markings.
2. Fibre access: The ONT will swap VLAN ID 10 with an S-VLAN tag to identify the Operator
(and the VPLS instance if the Operator has multiple VPLS’s at that NGA site). The assigned
S-VLAN ID is not visible to either the End-User or the Operator. The 802.1p QoS markings will
be preserved.
a). VDSL2 access: The DSLAM will swap VLAN ID 10 with an S-VLAN tag to identify the
Operator and the VPLS instance if the Operator has multiple VPLS’s at that NGA site). The
assigned S-VLAN ID is not visible to either the End-User or the Operator. The 802.1p QoS
markings will be preserved.
3. The OLT/DSLAM will forward traffic to the eircom NGN node tagged with the S-VLAN ID. The
OLT/DSLAM acts as a DHCP relay and inserts DHCP Option82 information including the
physical port that will support user identification and authorization.
The Option82 Calling Station ID (CSID) format is as follows:
Fibre access:
<OLT Name> xpon <Frame>/<Slot>/<Port>:<ONT>.<GEM>.<VLAN>
e.g. SND99 xpon 0/1/0:6.1.10
VDSL2 access:
<MDF>_<Cabinet><Node> eth <Frame>/<Slot>/<Port>
e.g. DDM1_061A eth 0/2/0
The DHCP option-82 remote-id is set to the telephone number. Example below:
DHCP options:
[82] Relay agent information: len = 35
[1] Circuit-id: NUT1_001A eth 0/1/8
[2] Remote-id: 8881-4329662
4. The S-VLAN will act as the service selector at the eircom NGN node to map the traffic to the
appropriate Virtual Private LAN Service (VPLS).
5. A service policy (i.e. CoS profile/bandwidth) is applied to End-User traffic associated with the
S-VLAN and the End-User traffic is mapped to the appropriate Forwarding Class (FC) within
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the core NGN network. The S-VLAN tag is removed and the End-User traffic is carried within
a Local Virtual Leased Line to the port on the eircom NGN node associated with the WEIL.
6. An S-VLAN tag that identifies the source eircom NGN node is added to the End-User traffic on
egress of the eircom NGN Node WEIL port and the appropriate CoS profile is applied to the
End-User traffic.
7. The eircom NGN E-NNI optical port is presented on the eircom ODF located in the eircom
exchange. The E-NNI port is configured as an 802.1ad port. The default is for eircom to
assign the S-VLAN ID presented at the E-NNI. The assigned S-VLAN ID will be in the range
10 – 4000. The Operator can optionally specify the S-VLAN ID presented at the E-NNI. If the
Operator chooses to specify their own S-VLAN ID on a specific E-NNI, then the Operator will
be responsible for specifying all S-VLAN IDs within the range 10 - 4000 on that E-NNI. Traffic
from each VPLS instance will be presented on a different S-VLAN.
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1.5
Unicast: WEIL (E-NNI) → End-User Traffic Flow
6
1
5
1
3
1
4
1
1
CPE
S-VLAN
ONT
End-User Traffic
802.1p marking (C-VLAN 10)
OLT
S-VLAN
VPLS
Access
Connections
eircom
ODF
C-VLAN
CPE
Operator
Network
eircom Exchange
S-VLAN
NTU
Cabinet DSLAM
6a
5a
eircom
NGN
Node
2
4a
Figure 12: Virtual Unbundled Access: E-NNI → End-User Traffic Flow – single VPLS instance per
Operator
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6
1
5
2
1
RG
RG
(CPE)
(CPE)
4
3
1
3
5
1
S -VLAN 2
S - VLAN 2
ONT
RG
RG
(CPE)
(CPE)
S -VLAN 1
S - VLAN 1
eircom
NGN
Node
OLT
ONT
End User Traffic
802.1p marking
VDSL DSLAM
(C -VLAN 10)
VDSL
VDSL
modem
modem
RG
RG
(CPE)
(CPE)
VPLS # 1
S -VLAN 1
C -VLAN
Master
Socket
VPLS # 2
S -VLAN 2
RG
RG
(CPE)
(CPE)
VDSL
VDSL
modem
modem
C -VLAN
Master
Socket
5a
2a
12
6
4a
3a
11
6a
1a
NTU
Operator
Operator
Network
Network
S -VLAN
S -VLAN 2
Figure 13 Virtual Unbundled Access: E-NNI → End-User Traffic Flow – multiple VPLS
instances per Operator
The following describes how Operator unicast traffic is treated in the E-NNI → End-User direction:
1. End-User traffic is presented to the eircom NGN E-NNI optical port via the eircom ODF
located in the eircom exchange. The E-NNI port is configured as an 802.1ad port. The default
is for eircom to assign the S-VLAN ID presented at the E-NNI. The assigned S-VLAN ID will
be in the range 10 – 4000. The Operator can optionally specify the S-VLAN ID presented at
the E-NNI. If the Operator chooses to specify their own S-VLAN ID on a specific E-NNI, then
the Operator will be responsible for specifying all S-VLAN IDs within the range 10 - 4000 on
that E-NNI.The Operator must add an S-VLAN tag to their traffic and mark the S-VLAN 802.1p
bits prior to presentation at the E-NNI.
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2. A service policy (i.e. CoS profile/bandwidth) is applied to the traffic associated with the SVLAN and the Operator traffic is mapped to the appropriate Forwarding Class (FC). The SVLAN tag is removed and the Operator traffic is carried within a Virtual Private LAN Service
(VPLS) to the ONT/DSLAM connected port on the eircom NGN node.
3. An S-VLAN is added to the Operator traffic and the appropriate QoS is applied. The assigned
S-VLAN ID is not visible to either the End-User or the Operator.
4. Fibre access: the OLT will forward traffic from the eircom NGN node to the ONT with the SVLAN tag.
a) VDSL2 access: the DSLAM will swap the SVLAN tag that identifies the Operator with VLAN
ID 10.
5. Fibre access: The ONT will swap the S-VLAN tag that identifies the Operator with VLAN ID 10
a) VDSL2 access: the DSLAM will forward traffic from the eircom NGN node to the End-User's
CPE via the Copper NTU.
6. Fibre Access: The End-User’s broadband traffic is presented to the End-User's CPE by the
ONT which is installed at the End-User site.
a) VDSL2 access: The End-User’s broadband traffic is presented to the End-User's CPE via the
Copper NTU.
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Multicast: End-User → WEIL (E-NNI) Traffic Flow
1.6
1
2
4
1
3
1
5
1
7
CPE
S-VLAN
ONT
End-User Traffic
802.1p marking (C-VLAN 10)
OLT
S-VLAN
VPLS
Access
Connections
eircom
ODF
C-VLAN
CPE
Operator
Network
eircom Exchange
S-VLAN
NTU
eircom
NGN
Node
1
Cabinet DSLAM
6
2a
Figure 14 Virtual Unbundled Access Multicast: End-User → WEIL (E-NNI) Traffic Flow –
single VPLS per Operator
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1
2
1
3
1
4
1
5
1
STB
STB
RG
RG
(CPE)
(CPE)
S - VLAN 2
S-VLAN
2
eircom
ONT
NGN
Node
STB
STB
S-VLAN 2
RG
RG
(CPE)
(CPE)
S-VLAN 1
OLT
ONT
Access
Connections
STB
STB
VPLS #1
Cabinet DSLAM
VDSL
VDSL
modem
modem
RG
RG
(CPE)
(CPE)
Master
Socket
VPLS #2
S-VLAN 1
C-VLAN
STB
STB
S - VLAN 2
C-VLAN
VDSL
VDSL
1a
modem
modem
1
8
Master
Socket
2a
7
3a
eircom
NTU
1
RG
RG
(CPE)
(CPE)
6
S-VLAN 1
Operator
Operator
Network
Network
S-VLAN 2
BTV
Sources
Figure 15 Virtual Unbundled Access Multicast: End-User → WEIL (E-NNI) Traffic Flow –
multiple VPLS’s per Operator
The following describes how Operator multicast traffic is treated:
1. The End-User's CPE sends an IGMP Join specifying the IP multicast group it wants to join.
2. Fibre access: The ONT swaps VLAN ID 10 with the multicast S-VLAN tag that identifies the
Operator and forwards to the OLT (The ONT performs IGMP snooping).
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a) VDSL2 access: The DSLAM swaps VLAN ID 10 with the multicast S-VLAN tag that
identifies the Operator.
3. The OLT/DSLAM proxies the IGMP Join towards the eircom NGN node.
4. The SVLAN will act as the service selector at the eircom NGN node to map the traffic to the
appropriate VPLS. There will be a VPLS for multicast per Operator at each eircom NGN node
with connected access nodes.
A Real-Time (EF) service policy (i.e. CoS profile/bandwidth) is applied to End-User traffic
associated with the multicast S-VLAN and the End-User traffic is mapped to the appropriate
EF Forwarding Class (FC). The S-VLAN tag is removed and the End-User traffic is carried
within the VPLS to the logical port on the eircom NGN node associated with the WEIL.
5. An S-VLAN tag that identifies the multicast traffic is added to the End-User traffic on egress
and the appropriate service policy is applied to the End-User traffic.
6. The eircom NGN E-NNI optical port is presented on the eircom ODF located in the eircom
exchange. The E-NNI port is configured as an 802.1ad port. The S-VLAN ID is used to identify
multicast traffic. The default is for eircom to assign the multicast S-VLAN ID presented at the
E-NNI. The assigned multicast S-VLAN ID will be in the range 10 – 4000. The Operator can
optionally specify the multicast S-VLAN ID presented at the E-NNI. If the Operator chooses to
specify their own multicast S-VLAN ID on a specific E-NNI, then the Operator will be
responsible for specifying all S-VLAN IDs within the range 10 - 4000 on that E-NNI.
7. The Operator’s router receives the IGMP join.
8. In the reverse direction multicast traffic is forwarded by the Operator’s network back through
the WEIL to the receiver. The same traffic flow as above applies in reverse.
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Network Solution Overview – Bitstream Plus Products
This section provides a high-level technical overview of how the eircom Wholesale NGA Bitstream
Plus products are supported on the eircom NGN network.
Unicast: End-User → WEIL (E-NNI) Traffic Flow
1.7
1
2
1
4
1
3
1
5
1
6
1
7
1
eircom
NGN Network
CPE
S-VLAN
ONT
OLT
VPLS
Access
Connections
End-User Traffic
802.1p marking (C-VLAN 10)
S-VLAN
eircom
NTU
C-VLAN
CPE
S-VLAN
Operator
Network
Operator
Handover
Site
NTU
Cabinet DSLAM
1a
eircom
NGN
Node
eircom
NGN
Node
2a
Figure 16: Bitstream Plus Fibre/VDSL2 Access: End-User → E-NNI Traffic Flow – single VPLS
per Operator
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1
RG
(CPE)
2
1
3
1
4
1
5
1
S-VLAN 1
6
1
E-NNI
GigE Optical or
Electrical Port
eircom
NGN Network
ONT
7
1
WEIL #1
S-VLAN 1
VPLS #1
RG
(CPE)
S-VLAN 2
OLT
ONT
VDSL
modem
eircom
NTU
eircom
NGN
Node
C-VLAN
eircom
NGN
Node
Operator
Handover
Site
WEIL #2
S-VLAN 1
Master
Socket
S-VLAN 2
RG
(CPE)
Operator
Network
S-VLAN #2
VPLS #2
End User Traffic
802.1p marking (C-VLAN 10)
RG
(CPE)
S-VLAN #1
S-VLAN 2
VDSL
modem
C-VLAN
Operator
Network
S-VLAN #2
Cabinet DSLAM
Master
Socket
1a
eircom
NTU
2a
Operator
Handover
Site
3a
Figure 17 Bitstream Plus Fibre/VDSL2 Access: End-User → E-NNI Traffic Flow – multiple
VPLS’s per Operator
The following describes how unicast End-User traffic is treated in the End-User → E-NNI direction:
1. Fibre access: End-User traffic is presented to the eircom network at a physical port on the
ONT (Optical Network Terminal) which is installed at the End-User site.
a) VDSL2 access: End-User broadband traffic is presented to the eircom network at the
Copper NTU.
•
The End-User traffic presented at the ONT/NTU will be VLAN tagged (VLAN 10). The
End-User CPE will generate the Ethernet frames with a VLAN tag of 10 and 802.1p QoS
markings.
2. Fibre access: The ONT will swap VLAN ID 10 with an S-VLAN tag to identify the Operator.
The assigned S-VLAN ID is not visible to either the End-User or the Operator. The 802.1p
QoS markings will be preserved.
a). VDSL2 access: The DSLAM will swap VLAN ID 10 with an S-VLAN tag to identify the
Operator (and the VPLS instance at that NGA site if the Operator has multiple VPLS’s). The
assigned S-VLAN ID is not visible to either the End-User or the Operator. The 802.1p QoS
markings will be preserved.
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3. The OLT/DSLAM will forward traffic to the eircom NGN node tagged with the S-VLAN ID. The
OLT/DSLAM acts as a DHCP relay and inserts DHCP Option82 information including the
physical port that will support user identification and authorization.
The Option82 Calling Station ID (CSID) format is as follows:
Fibre access:
<OLT Name> xpon <Frame>/<Slot>/<Port>:<ONT>.<GEM>.<VLAN>
e.g. SND99 xpon 0/1/0:6.1.10
VDSL2 access:
<MDF>_<Cabinet><Node> eth <Frame>/<Slot>/<Port>
e.g. DDM1_061A eth 0/2/0
4. The S-VLAN will act as the service selector at the eircom NGN node to map the traffic to the
appropriate Virtual Private LAN Service (VPLS).
5. A service policy (i.e. CoS profile/bandwidth) is applied to End-User traffic associated with the
S-VLAN and the End-User traffic is mapped to the appropriate Forwarding Class (FC) within
the core NGN network. The S-VLAN tag is removed and the End-User traffic is carried within
a VPLS across the eircom Core NGN network.
6. An S-VLAN tag that identifies the source eircom NGN node is added to the End-User traffic on
egress of the eircom Core NGN network and the appropriate CoS profile is applied to the EndUser traffic.
7. The End-User traffic is passed to the eircom managed NTU located at the Operator handover
site. The S-VLAN on the network-facing port is mapped to the Operator facing port on the
NTU (E-NNI port). The E-NNI port is configured as an 802.1ad port. The default is for eircom
to assign the S-VLAN ID presented at the E-NNI. The assigned S-VLAN ID will be in the
range 10 – 4000. The Operator can optionally specify the S-VLAN ID presented at the E-NNI.
If the Operator chooses to specify their own S-VLAN ID on a specific E-NNI, then the
Operator will be responsible for specifying all S-VLAN IDs within the range 10 - 4000 on that
E-NNI. The S-VLAN ID is used to identify the eircom NGN node associated with the Bitstream
Plus Unicast (BPU) fibre and VDSL2 access. The 802.1p bits marked by the End-User’s CPE
are not preserved through the network because the SVLAN is stripped off however the QoS is
preserved because the 802.1p bits on the SVLAN at the WEIL are marked according the
MPLS EXP bits i.e. CPE SVLAN 802.1p bits 0, 2 and 4 map into MPLS EXP bits 0, 2 and 4,
which in turn map to 802.1p bits 0, 2 and 4 on the SVLAN at the WEIL.
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In the event that an Operator has more than one WEIL, an Operator must specify which WEIL is
to be associated with each BPU connection.
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Unicast: WEIL (E-NNI) → End-User Traffic Flow
1.8
6
1
5
1
3
1
4
1
2
1
1
eircom
NGN Network
CPE
S-VLAN
ONT
OLT
VPLS
Access
Connections
End-User Traffic
802.1p marking (C-VLAN 10)
Operator
Network
S-VLAN
eircom
NTU
C-VLAN
CPE
Operator
Handover
Site
S-VLAN
NTU
eircom
NGN
Node
Cabinet DSLAM
6a
5a
eircom
NGN
Node
4a
Figure 18: Bitstream Plus Fibre/VDSL2 Access: E-NNI → End-User Traffic Flow – single VPLS
per Operator
6
1
RG
(CPE)
5
1
4
1
3
1
2
1
S-VLAN 1
E-NNI
GigE Optical or
Electrical Port
eircom
NGN Network
ONT
1
WEIL #1
S-VLAN 1
VPLS #1
RG
(CPE)
S-VLAN 2
OLT
ONT
VDSL
modem
eircom
NTU
eircom
NGN
Node
C-VLAN
eircom
NGN
Node
Operator
Handover
Site
WEIL #2
S-VLAN 1
Master
Socket
S-VLAN 2
RG
(CPE)
Operator
Network
S-VLAN #2
VPLS #2
End User Traffic
802.1p marking (C-VLAN 10)
RG
(CPE)
S-VLAN #1
S-VLAN 2
VDSL
modem
C-VLAN
Operator
Network
S-VLAN #2
Cabinet DSLAM
Master
Socket
6a
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Operator
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4a
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Figure 19 Bitstream Plus Fibre/VDSL2 Access: E-NNI → End-User Traffic Flow - multiple
VPLS's per Operator
The following describes how Operator unicast traffic is treated in the E-NNI → End-User direction:
1. Broadband End-User traffic is presented to the eircom network at a physical port (E-NNI) on
an eircom managed NTU located at the Operator handover site. The E-NNI port is configured
as an 802.1ad port. The default is for eircom to assign the S-VLAN ID presented at the E-NNI.
The assigned S-VLAN ID will be in the range 10 – 4000. The Operator can optionally specify
the S-VLAN ID presented at the E-NNI. If the Operator chooses to specify their own S-VLAN
ID on a specific E-NNI, then the Operator will be responsible for specifying all S-VLAN IDs
within the range 10 - 4000 on that E-NNI. The Operator must add this S-VLAN tag to their
traffic and mark the S-VLAN 802.1p bits prior to presentation at the E-NNI. The S-VLAN tag is
associated with the eircom NGN node connected to the destination OLT/DSLAM (and the
VPLS instance if the Operator has more than one at that NGA site).
2. A service policy (i.e. CoS profile/bandwidth) is applied to the traffic associated with the SVLAN and the Operator traffic is mapped to the appropriate Forwarding Class (FC) within the
eircom Core NGN network. The S-VLAN tag is removed and the Operator traffic is carried
within a Virtual Private LAN Service (VPLS) across the eircom Core NGN network.
3. An S-VLAN is added to the Operator traffic and the appropriate QoS is applied. The assigned
S-VLAN ID is not visible to either the End-User or the Operator.
4. Fibre access: the OLT will forward traffic from the eircom NGN Node to the ONT with the SVLAN tag.
a) VDSL2 access: the DSLAM will swap the SVLAN tag that identifies the Operator with VLAN
ID 10.
5. Fibre access: The ONT will swap the S-VLAN tag that identifies the Operator with VLAN ID
10.
a) VDSL2 access: the DSLAM will forward traffic from the eircom NGN node to the End-User's
CPE via the Copper NTU.
6. Fibre Access: The End-User’s broadband traffic is presented to the End-User's CPE by the
ONT which is installed at the End-User site.
a) VDSL2 access: The End-User’s broadband traffic is presented to the End-User's CPE via
the Copper NTU at the End-User site.
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Bitstream Plus Multicast: End-User → WEIL (E-NNI) Traffic Flow
1.9
2
1
1
3
1
9
1
4
1
CPE
5
1
6
1
7
1
10
1
8
1
S-VLAN
ONT
OLT
Access
Connections
eircom
NGN
Node
C-VLAN
CPE
MVPN
VPLS
eircom
NGN PE
eircom
NGN PE
eircom
NTU
eircom
NGN
Node
eircom
NGN Network
NTU
Operator
Network
S-VLAN
1 Gbit/s
Access
Connection
Cabinet DSLAM
Operator
Handover
Site
E-NNI
GigE Optical or
Electrical Port
→
Figure 20: Bitstream Plus Multicast: End-User
WEIL (E-NNI) Traffic Flow – single
VPLS/MVPN per Operator
1a
1
2
1
3
1
4
1
STB
STB
S-VLAN 1
RG
RG
(CPE)
(CPE)
S-VLAN
1
ONT
5
1
6
1
7
1
8
1
9
1
10
1
11
1
STB
STB
S-VLAN 2
RG
RG
(CPE)
(CPE)
S-VLAN
OLT
VPLS #1
ONT
MVPN #1
S-VLAN #1
MVPN #2
STB
STB
RG
RG
(CPE)
(CPE)
VPLS #2
C-VLAN
VDSL
VDSL
modem
modem
eircom
NGN PE
S-VLAN #2
eircom
NGN PE
eircom
NGN Network
Master
Socket
STB
STB
S-VLAN
Operator
Network
eircom
NGN Agg
Node
1 Gbit/s
Access
Connection
eircom
NGN Agg
Node
eircom
NTU
Operator
Handover
Site
BTV
Sources
E-NNI
GigE Optical or
Electrical Port
S-VLAN
RG
RG
(CPE)
(CPE)
C-VLAN
VDSL
VDSL
1a
modem
modem
Cabinet DSLAM
Master
Socket
1a
1
2a
1
3a
4a
→
Figure 21: Bitstream Plus Multicast: End-User
WEIL (E-NNI) Traffic Flow – multiple
VPLS/MVPN’s per Operator
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The following describes how Operator multicast traffic is treated:
1. The End-User's CPE sends an IGMP Join specifying the IP multicast group it wants to join.
2. Fibre access: The ONT swaps VLAN ID 10 with the multicast S-VLAN tag that identifies the
Operator (and the VPLS/MVPN instance if the Operator has more than one) and forwards to
the OLT (The ONT performs IGMP snooping).
a) VDSL2 access: The DSLAM swaps VLAN ID 10 with the multicast S-VLAN tag that
identifies the Operator.
3. The OLT/DSLAM proxies the IGMP Join towards the eircom NGN node.
4. The SVLAN will act as the service selector at the eircom NGN node to map the traffic to the
appropriate VPLS. There will be a VPLS for multicast per Operator at each OLT/DSLAM site.
A Real-Time (EF) service policy (i.e. CoS profile/bandwidth) is applied to End-User traffic
associated with the multicast S-VLAN and the End-User traffic is mapped to the appropriate
EF Forwarding Class (FC) within the core NGN network. The S-VLAN tag is removed and the
End-User traffic is carried within a VPLS to the eircom PE node.
5. The VPLS instance on the eircom NGN node is connected to each of the eircom PE nodes
and is terminated directly onto an IP interface of a multicast VPN (MVPN). IGMP will be
enabled on the IP interface to support multicast distribution.
6. The eircom PE Node receives the IGMP join from the OLT/DSLAM and forwards the message
as a PIM join within the Operator's MVPN. At the far end MP-BGP is enabled on the eircom
PE Node in order to exchange routing information with the Operator's edge router. These
routes will be used to calculate the appropriate path back to the source (i.e. via the WEIL).
The eircom PE Node at the WEIL forms a PIM adjacency with the Operator’s edge router and
a distribution tree is built on which the multicast traffic is forwarded to the receiver.
7. At the WEIL PE, an MVPN with an IP interface is connected to the WEIL aggregation node.
The PE router forms a C-PIM relation with the Operator’s routers to allow the joins to reach
the RP/multicast source.
8. An S-VLAN tag that identifies the multicast traffic for that MVPN instance is added to the EndUser traffic on egress of the eircom Core NGN network and the appropriate service policy is
applied to the End-User traffic.
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9. The End-User traffic is passed to the eircom managed NTU located at the Operator handover
site. The S-VLAN on the network-facing port is mapped to the Operator facing port on the
NTU (E-NNI port). The E-NNI port is configured as an 802.1ad port. The S-VLAN ID is used to
identify multicast traffic. The default is for eircom to assign the multicast S-VLAN ID presented
at the E-NNI. The assigned multicast S-VLAN ID will be in the range 10 – 4000. The Operator
can optionally specify the multicast S-VLAN ID presented at the E-NNI. If the Operator
chooses to specify their own multicast S-VLAN ID on a specific E-NNI, then the Operator will
be responsible for specifying all S-VLAN IDs within the range 10 - 4000 on that E-NNI.
10. When the source tree is built from the receiver to the source, data flows down the source tree
to the receiver.
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1.10 Unicast Implementation
The following figure provides an overview of the network solution for unicast traffic.
ONT
Operator A
User 1
VLAN 1100
ONT
eircom
NGN
Node
OLT
eircom
NGN
Node
VLAN 1100
Operator A
User 2
VLAN 1100
ONT
SVLAN 10
SVLAN 20
VPLS
VLAN 1200
VLAN 1200
Operator B
User 1
Operator A Handover Site
WEIL
VPLS
ONT
eircom
NTU
VLAN
1200
Operator B
User 2
Operator B Handover Site
ONT
Operator A
User 3
VLAN 1100
ONT
WEIL
VPLS
OLT
VLAN 1100
Operator A
User 4
VLAN 1100
ONT
Operator B
User 3
ONT
VLAN 1200
eircom
NGN
Node
VPLS
VLAN 1200
eircom
NGN
Node
eircom
NTU
SVLAN 10
SVLAN 20
VLAN
1200
Operator B
User 4
Operator A
User 5
Operator B
User 5
CPE
NTU
CPE
NTU
Cabinet
DSLAM
Figure 22: Network Solution – Unicast Traffic
End-User traffic presented at the ONT/NTU will be VLAN tagged with the VLAN ID and 802.1p
bits marked by the End-User’s CPE. The ONT/DSLAM will swap VLAN ID 10 with an S-VLAN tag
to identify the Operator (VLAN 1100 for Operator A and VLAN 1200 for Operator B above).
At the eircom NGN Node the VLAN acts as the service selector. The VLAN tag is stripped off and
the traffic is forwarded to the WEIL. There will be a VPLS per Operator per eircom NGN node for
unicast traffic.
At the WEIL an SVLAN is added, this identifies the NGN node to which the OLT/DSLAM is
connected (VLANs 10 and 20 in the figure above).
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1.11 Multicast Implementation
The multicast service is delivered using a MVPN solution. The following figure provides an
overview of the network solution for multicast traffic.
Operator A User 1
IGMP join
239.1.1.1
eircom
NGN
PE
ONT
RG
CPE
(CPE)
1100 = unicast
1101 = multicast
ONT
eircom
NGN
Node
OLT
VPLS
VLAN 1201
Operator B
User 3
VPLS
MVPN
WEIL
RP
Operator
Network
MVPN
eircom
NGN Network
1200 = unicast
1201 = multicast
eircom
NTU
Multicast Core
MVPN
ONT
Operator A Handover Site
MVPNy
VLAN 1101
ONT
eircom
NGN
Node
MVPN
MVPN
Operator A
User 2
eircom
NGN
PE
MVPNx
PIM adjacency
Operator B
User 4
Figure 23: Network Solution - Multicast Implementation
The End-User’s CPE sends an IGMP Join to multicast group 239.1.1.1 (IGMP v.2 is supported) to
the ONT/DSLAM. The ONT/DSLAM swaps VLAN ID 10 with the multicast S-VLAN tag 1101 that
identifies the Operator. For fibre access the ONT snoops and forwards to the OLT. When the Join
is received at the OLT/DSLAM on VLAN 1101, the OLT/DSLAM sends the traffic towards the
eircom PE node.
At the eircom PE Node the Operator’s multicast traffic enters a multicast VPN within the NGN core
network. The Operator's RP address is configured as part of the MVPN so that IGMP joins from
the OLT/DSLAM can be forwarded as PIM joins to the Operator.
At the WEIL a dedicated VLAN is configured to carry all multicast traffic.
WEIL
NGN Node 1 Unicast
NGN Node 2 Unicast
Multicast
Figure 24: Wholesale Ethernet Interconnect Link
For efficiency and scalability a single copy of every multicast stream offered by an Operator is
carried from the Operator’s hand-off point, through the core network, to the OLT and PON or
DSLAM connecting to the End-User. At no point in this path is the channel data replicated
unnecessarily. The core network uses the PIM routing protocol to build a multicast tree from the
Operator router to the OLT/DSLAM. For fibre access the OLT takes advantage of the shared PON
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medium to transmit a single stream to all End-Users. The DSLAM will transmit a stream per EndUser.
The multicast streams from the Operators are transmitted from the encoders as IP packets with
multicast addresses. These are grouped into a VLAN and sent to eircom at the Operator hand-off
WEIL. eircom multicasts the streams across the core and a single copy of each stream is sent to
every OLT/DSLAM. At the OLT/DSLAM a multicast VLAN is configured for each Operator such
that there is clear separation of streams between Operators.
When a GPON/VDSL2 End-User joins the multicast group for a stream the OLT/DSLAM transmits
a copy of that stream onto the PON/DSLAM VDSL2 port associated with that End-User. The OLT
uses a special multicast GEM (GPON Encapsulation Method) channel on the PON to carry this
data. The DSLAM will transmit this data in the EF queue. For fibre access the data is transmitted
once on the PON and is available to any of the 31 other End-Users should they join that multicast
group.
In respect of fibre access, while the multicast traffic is visible on the PON side of all 32 ONTs, the
data is not forwarded to the End-User’s internal Gigabit Ethernet port unless an IGMP join has
been seen by the ONT.
Multicast traffic is not encrypted by the OLT, unlike unicast traffic. Through the use of filters, the
OLT is configured with a set of group addresses for each Operator multicast VLAN. End-User
ONTs are then permitted access to subsets of these group addresses on an Operator multicast
VLAN. This restricts End-Users to receiving only those streams that are transmitted by their
Operator.
There is no requirement to agree on the multicast address space used by each Operator because
the multicast traffic will be carried in an MVPN in the NGN core network.
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VLAN Management, Forwarding Model and Security
1. End-User CPE: The Operator is required to tag traffic with a VLAN (VLAN ID 10). The VLAN
dot1p bits allows the Operator to classify traffic to support differential treatment on upstream
queues.
2. Operator Access: At the NGA network touch point (ONT/DSLAM) the VLAN ID applied by the
End-User CPE will be swapped with an S-VLAN that identifies the Operator (and the VPLS
instance if the Operator has more than one). If the Operator has multiple VPLS instances per
NGA site, there will be up to 10 SVLAN IDs assigned to the Operator. Each S-VLAN ID will be
associated with an Egress Group.
When an NGA access is ordered, the Egress Group required must be specified on the order so
that the VDSL/GPON port is associated with the correct S-VLAN ID for that Operator and VPLS
instance. This S-VLAN ID will be unique to the Operator and applied to all of the Operators’
access services on the network. This VLAN is only locally significant.
3. WEIL: At the WEIL there will be a VLAN per NGN node (and per VPLS instance where the
Operator has more than one) which will carry all traffic associated with the NGA access nodes
(OLT and or DSLAMs) connected to that NGN node.
An N:1 residential forwarding model is utilised on the ONT/DSLAM access nodes for both the
Bitstream Plus and Virtual Unbundled Access products. In this model the End-User’s CPE adds
an 802.1q Customer VLAN tag (VLAN ID 10) to the End-User traffic (VLAN tags from the EndUser will be dropped, if present). The access node swaps the customer VLAN tag for a service
VLAN tag that identifies the Operator and VPLS instance if there is more than one for that
Operator. The 802.1p QoS markings are preserved. The access node has MAC address learning
enabled such that the service VLAN and the MAC address are used to uniquely identify each EndUser.
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Frame
CPE
Frame
10
OLT/
DSLAM
Frame
S
Figure 25: Access Node Forwarding Model
As every PON is effectively a shared medium, when the OLT sends a packet, it is received by
everyone on the PON. To overcome this, the OLT encrypts unicast data streams using Advanced
Encryption Standard (AES).
The VDSL2 DSLAM is not a shared medium so when it sends a packet it is received by the
destination VDSL2 modem only.
Both FTTH and FTTC employ Anti-DoS, Anti-MAC Spoofing and Anti-IP Spoofing security
features. With the Anti-DoS feature the system monitors the control traffic on each user-port that
has a destination address of the DSLAM; if the amount of control traffic on a user-port exceeds
normal usage levels then that user-port is blacklisted by the system. Control traffic on a user-port
is shown as follows:

L2CP (with MAC address 01-80-C2-00-00-00 to 01-80-C2-00-00-2f) packets, such as
Extensible Authentication Protocol over LAN (EAPOL), Ethernet in the first mile (EFM),
Link Aggregation Control Protocol (LACP), and Spanning Tree Protocol (STP)

802.1ag connectivity fault management (CFM) packets

Address Resolution Protocol (ARP) packets

PPPoE discovery packets

IGMP

DHCP

ICMP

Network Time Protocol (NTP) packets

PPPoA Link Control Protocol (LCP) packets
When a port is blacklisted, all packets will be dropped. The rate limit is 63pps (packets per
second) for Control Traffic.
An Operator will not receive a notification if a port has been blacklisted. The Operator can report
a fault to eircom if an end-customer has reported a loss of service and eircom Service Assurance
personnel can check the status of the port directly on the relevant element manager/network
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device to ascertain if a port has been blacklisted. However, it should be noted that a port will only
be blacklisted for a period of 5 minutes so in all probability the port will have been unblocked by
the time the end-customer engages with the Operator to report a fault.
With the Anti-MAC Spoofing feature the system binds all of the MAC addresses learned on a
user-port to that port such that those address can only be used on that port. With the Anti-IP
Spoofing feature the system binds all of the IP addresses learned on a user-port to that port such
that only those address can only be used on that port. Up to 8 MAC/IP addresses can be bound to
a single port. MAC/IP address bindings will be deleted when end-customer is offline.To clear the
MACs bound to a port to allow re-learning, an Operator can use the RN (Reset NGA) Order Type
on the Unified Gateway which will reset the ONT port for FTTH services and the VDSL port on the
DSLAM for FTTC services. This will clear the MAC/IP addresses bound to a port to allow relearning.
WEIL and NGA
All Next Generation Access (NGA) products i.e. Virtual Unbundled Access (VUA) and Bitstream
Plus (BP) are associated with one or more Wholesale Ethernet Interconnect Links (WEILs)
belonging to the Operator. The WEIL provides connectivity from an Operator’s handover site to
the eircom NGN and therefore in the case of NGA, the WEIL provides connectivity from the
Operator’s site to the Bitstream Plus or VUA services.
It is possible to use the same Wholesale Ethernet Interconnect Link for handover of traffic
belonging to multiple services e.g. Wholesale Symmetrical Ethernet Access (WSEA) and
Bitstream Plus Unicast (BPU). The characteristics of the WEIL are described in the ‘Wholesale
NGN Ethernet Products’ technical handbook which can be found on www.eircomwholesale.ie.
The WEIL is provided from an eircom NGN node. There may be multiple eircom NGN Node in an
eircom exchange, one of which will be the NGA NGN node. If the WEIL and the associated
Bitstream Plus service are at the same site, or in the case of VUA, where the WEIL and VUA
service are always at the same site by definition, the WEIL must be connected to the NGA NGN
node. If a WEIL is connected to a “non-NGA” eircom NGN node and a Bitstream Plus or VUA
service is ordered for that site as shown in Figure 26, Eircom will arrange for the WEIL to be
moved to the NGA NGN node. When Eircom receives a new WEIL order from an Operator,
Eircom will check if it will be used to provide NGA services and will then ensure the WEIL is
provided off the appropriate NGN node.
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Eircom exchange
eircom
NGN
Node (NGA node)
CPE
C-VLAN
S-VLAN
NTU
Cabinet DSLAM
CPE
VPLS
C-VLAN
NTU
CPE
S-VLAN
NGN core
C-VLAN
Network
Operator
Cabinet DSLAM
-
NTU
S-VLAN
NGN NTU
eircom
NGN
Node (“non-NGA node)
Figure 26 NGA site with WEIL on "non-NGA" NGN node
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QoS and Service Bandwidth
The capacity on the physical connection from the OLT to the eircom NGN node will be managed
by eircom to ensure there is no congestion.
The End-User’s CPE will tag traffic with VLAN ID 10 and will mark the 802.1p QoS markings in the
VLAN header. Frames will be mapped into the service queues at the eircom NGN Node according
to the 802.1p marking. It should be noted that the default 802.1p bit marking applied by the EndUser’s CPE is vendor specific, typically 0 or 1; supported markings and their associated
forwarding class mappings are listed in Table 1. For multicast a Real-Time (EF) QoS profile will be
applied. The characteristics of these traffic queues are defined in the ‘Wholesale NGN Ethernet
Products’ technical handbook which can be found on www.eircomwholesale.ie.
C-VLAN 802.1p Marking
Forwarding Class
4
EF
2
AF
0
BE
Table 1 Mapping of C-VLAN 802.1p bit markings to forwarding classes
It is possible to use the same Wholesale Ethernet Interconnect Link for handover of traffic
belonging to multiple services e.g. Wholesale Symmetrical Ethernet Access (WSEA) and
Bitstream Plus Unicast (BPU) / Bitstream Plus Multicast (BPM). The Operator specifies the
aggregate EF and AF bandwidths for each SAB. The existing WEIL rule applies: the sum of the
WEIL Service Access Bandwidths which share the same physical Ethernet Interconnect Link
bearer cannot exceed the physical speed of the connection.
For unicast products the utilisation on the three queues (EF, AF and Standard) at the WEIL
associated with an OLT/DSLAM Unicast service will be measured for traffic usage. An indicative
forecast of traffic levels on the queues will be provided by the Operator. This will be used for
capacity management on the links between the WEIL and OLTs/DSLAMs. A process will be
implemented so that the bandwidths configured on the queues will be increased as required as
the traffic levels on the queues grow.
For multicast products billing will be based upon the bandwidth specified in the Bitstream Plus
Fibre Multicast (BPM) order, Table 2 lists the available bandwidth options. Other bandwidths may
be available on request. This specified bandwidth will be used for capacity management on the
links between the WEIL and OLTs/DSLAMs.
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1 Gbit/s EIL
10 Gbit/s EIL
Multicast Bandwidths (Mbit/s)
Multicast Bandwidths (Mbit/s)
10
10
20
20
30
30
40
40
50
50
75
75
100
100
250
250
500
500
750
750
1000
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Table 2: Multicast Bandwidth Options
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WEIL Service Access Bandwidth 1
eircom
NGN Network
Individual
WSEA
Logical
Connections
Individual
Logical
Connections
to
OLT/DSLAMs
WEIL Service Access Bandwidth 2
EF
AF
BE
SAP
EF
AF
BE
SAP
EF
AF
BE
SAP
EF
AF
BE
SAP
EF
AF
BE
SAP
E-NNI
eircom
NTU
WEIL Service Access Bandwidth 3
eircom NGN
Node
Figure 27: Service Multiplexing and SABs
for fibre access, at the ONT, a single speed will be configured: 150Mbit/s downstream and
30Mbit/s upstream. No bandwidth limits will be applied to the individual traffic classes (EF, AF,
BE).
For VDSL2 access a number of bandwidth options will be offered as shown in
1400m
15
3
1700m
12
1
2000m
7
1
Table 3 and Table 4. The High Speed Internet (HSI) bandwidth profiles are rate adaptive in both
directions. The high stability profiles are fixed in the downstream direction and rate adaptive in the
upstream direction.
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Line length
Downstream**
Upstream**
(Max)
Mbps
Mbps
300m*
70
20
300m*
60
20
500m
50
20
600m
50
15
750m
40
10
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850m
30
8
1000m
25
7
1200m
18
5
1400m
15
3
1700m
12
1
2000m
7
1
Table 3: High Speed Internet Rate Adaptive VDSL2 Profiles
* there are 2 profiles for the 0-300M line lengths because if the line is unstable at the higher
speed, it may be necessary to downgrade the End-User to stabilise the line. These are effectively
maintenance profiles but are included in the table so they are available for the Operator to select
via the Unified Gateway (UG).
Line length
Downstream**
Upstream**
(Max)
Mbps
Mbps
(Fixed)
(Rate Adaptive)
200m
50
5 - 16
300m
43
5 - 16
450m
40
5 - 16
550m
34
5 - 16
700m
28
5 - 15
800m
20
2.5 - 10
900m
20
2.5 - 8
1000m
18
2.5 - 7
1400m
12
0.256 - 1
1600m
10
0.256 - 1
2000m
4
0.256 - 1
Table 4: High Stability VDSL2 profiles
** the speeds listed in Table 2, Table 3 and Table 4 may be revised downwards following
experience gained from the NGA deployment. In addition the line lengths are provided for
indicative purposes only.
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FTTC VDSL2 Implementation
The table below gives an overview of the present VDSL2 Implementation and implementations
that are planned to be introduced in 2013/2014 as enhancements to FTTC VDSL2.
Parameter
Present
2013/2014
Profile 17a B8-11 (Annex B G.993.2)
X
X
Interleaving (INP=2, D=8)
X
X
UPBO (G.993.2)
X
X
PSD Downstream PSD Shaping
X
X
Profile 8b B8-4 (Annex B G.993.2)
X
Retransmission (G.998.4)
X
Vectoring (G.993.5)
X
SRA (G.993.2)
X
AELEM (G.992.3)
X
Table 5 Overview of FTTC VDSL2 Implementation
These parameters are typically available at present on most CPE; a firmware upgrade may be
required.
FTTC CPE Requirements
For FTTC, the link from the cabinet to the user premises is over copper using VDSL2. This
section specifies the functionality required in the VDSL2 modem for correct interworking at the
physical layer.
1. The modem used shall fully comply with the VDSL2 mandatory requirements of G.993.2
2. The modem shall support VDSL2 Profile 17a B8-11 as defined in Annex B of G.993.2.
Support for profile 8b B8-4 from G.993.2 is also recommended.
3. The modem shall comply with the requirements of the CLFMP
4. The modem shall support operating with cabinet based VDSL2. This involves supporting
tone-sets A43 and A43C (as defined in G.994.1 Amendment 1, plus downstream PSD
shaping and upstream power back-off as defined in G.997.1 and G.993.2. The use of
additional tone-sets (B43, B43c, V43) is not allowed as these may cause adverse
interference to other DSL systems operating in the same cable binder.
5. The modem shall support Upstream Power Back Off (UPBO) as defined in G.993.2
6. The modem shall support the use of the upstream band (U0) between 25kHz and 138kHz.
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7. The modem shall support seamless rate adaptation (SRA) as defined in Section 13.1 of
G.993.2
8. The modem should support downstream PHY layer retransmission as defined in G.998.4.
When
downstream
retransmission
is
implemented,
the
“Retransmission
used
Downstream (RTX_USED_ds)” parameter shall be reported via the DSLAM in accordance
with Clause 7.1.5.38 of G.997.1.
9. The Modem should support upstream PHY layer retransmission as defined in G.998.4.
When upstream retransmission is implemented, the “Retransmission Used Upstream
(RTX_USED_us)” parameter shall be reported via the DSLAM in accordance with Clause
7.1.5.38 of G.997.1
10. The modem shall support 17MHz Vectoring as defined in G.993.5.
11. The modem shall support the alternate electrical length estimation methodology
(AELEM)for estimating the electrical length of the connection between the modem and the
DSLAM (mode ELE-M1) as defined in G.993.2. This is required to provide accurate
estimation of the electrical length of the channel over which the modem is operating (i.e.
the insertion loss of the cable measured at 1MHz)to help ensure accurate UPBO setting
and compliance with the CLFMP
12. The modem shall support bit swap as defined in G.993.2
13. The modem shall support the correct reporting of Vendor ID, Version Number and Serial
Number as described in section 11.2.3.6 of G.993.2
14. The modem shall support the correct reporting of key VDSL2 test and diagnostic
parameters according to G.997.1. The key parameters are shown in Table 6 below.
Parameter
Reference
XTU-R G.994.1 Vendor ID
7.4.2/G.997.1
xTU-R system vendor ID
7.4.4/G.997.1
xTU-R version number
7.4.6/G.997.1
xTU-R serial number
7.4.8/G.997.1
Upstream Actual data rate
7.5.2.1/G.997.1
Downstream Actual data rate
7.5.2.1/G.997.1
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Upstream line attenuation [LATNus]
7.5.1.10/G.997.1
Downstream line attenuation [LATNds]
7.5.1.9/G.997.1
Upstream signal-to-noise (SNR) ratio margin [SNRMus]
7.5.1.16/G.997.1
Downstream signal-to-noise ratio margin [SNRMds]
7.5.1.13/G.997.1
Upstream maximum attainable data rate [ ATTNDRus]
7.5.1.20/G.997.1
Downstream maximum attainable data rate [ATTNDRds]
7.5.1.19/G.997.1
Upstream Actual Aggregate Transmit Power [ACTATPus]
7.5.1.25/G.997.1
Downstream H(f) logarithmic subcarrier group size [HLOGGds]
7.5.1.26.5/G.997.1
Downstream H(f) logarithmic representation [HLOGpsds]
7.5.1.26.6/G.997.1
Downstream QLN(f) subcarrier group size [QLNGds]
7.5.1.27.2/G.997.1
Downstream QLN(f) [QLNpsds]
7.5.1.27.3/G.997.1
Downstream SNR(f) subcarrier group size [SNRGds]
7.5.1.28.2/G.997.1
Downstream SNR(f) [SNRpsds]
7.5.1.28.3/G.997.1
Downstream bits allocation [BITSpsds]
7.5.1.29.1/G.997.1
Upstream traffic count
Downstream traffic count
FEC seconds-line far end [ FECS-LFE]
(Downstream)
7.2.1.2.1/G.997.1
Errored second-line far end [ES-LFE]
(Downstream)
7.2.1.2.2/G.997.1
Severely errored second-line far end [SES-LFE] (Downstream)
7.2.1.2.3/G.997.1
Forward error correction – Channel far-end [FEC-CFE]
7.2.2.2.2/G.997.1
Actual INP Upstream [ACTINP]
7.5.2.4/G.997.1
Actual INP Downstream [ACTINP]
7.5.2.4/G.997.1
Table 6 Key Diagnostic and Test parameters to be reported by CPE
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eircom equipment installed at user premises (ONT, NTU)
Fibre access: An eircom Network Termination Unit will be installed generally adjacent to the
Copper NTU. On occasion it will be located elsewhere, this decision is driven by the cable entry
point.
The specification of the ONT which will be installed in the End-User premises is shown in the
following table:
Mounting
Wall mounted
Dimensions
143 mm (L) x 113 mm (W) x 30 mm (H)
Weight
200g (not including power adapter)
Power adapter type
Directly moulded onto a BS 1363 3-pin AC plug
Power adapter input
100–240 VAC, 50–60 Hz
System power supply
11–14 VDC, 1A (Maximum power consumption:
approx. 5W)
Power lead length
1.5m
End-User Facing Port
Auto-sensing 10/100/1000M Base-T Ethernet port
(RJ-45)
Table 7: ONT Specification
Please note that the above specification is subject to change.
VDSL2 access: the demarcation point is the Copper NTU at the End-User premises. An RJ11
interface is provided for POTS and an RJ45 is provided for VDSL.
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Appendix I
NTU Installation Manual
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NTU Installation Manual for
NGA FTTC Connections in
National Roll-Out
Version 2.0
October
2012
Version 2.0
November 2012
NTU Installation Manual for NGA FTTC Connections in National Roll-Out
Contents
Version 2.0 ................................................................................................................................. 51
Contents ..................................................................................................................................... 52
1.
Introduction....................................................................................................................... 53
Incorporation of VoIP into the internal wiring is outside the scope of this document and is
not covered. ............................................................................................................................... 53
2.
Right to make changes .................................................................................................... 53
3.
Connection from the FTTC Cabinet ................................................................................. 53
Figure 1: NTU Connection from FTTC Cabinet ........................................................................ 53
4.
Installation of NTU ............................................................................................................ 54
Figure 2: Eircom NTU Base with Back Box .............................................................................. 54
5.
POTS with VDSL2 ............................................................................................................. 54
Figure 3: Wiring diagram for POTS + VDSL2 Scenario ........................................................... 55
Figure 4: DSL and POTS Ports on the Splitter facing plate .................................................... 55
Figure 5: Wiring of Rear of Faceplate (Splitter Module) .......................................................... 56
6.
Standalone VDSL2 ............................................................................................................ 56
Figure 6: Wiring diagram for VDSL2 Standalone scenario ..................................................... 56
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1. Introduction
The purpose of this document is to provide wiring guidelines to Operators for the installation of a dual
interface NTU (Network Terminating Unit) in an End-Users premise in order to facilitate the delivery of NGA
VUA and Bitstream Plus services using VDSL2 from an eircom FTTC cabinet as part of the NGA National
Roll-Out. NGA VUA or Bitstream Plus connection may be POTS-Based (PB) or Standalone (SA) and the
dual interface NTU will be used in both scenarios. The manual covers the following items of interest to the
Installer and assumes a level of capability considered appropriate to End-User premises installation.


Installation of Dual Interface NTU to Support VDSL2 and POTS on the same copper pair.
Installation of Dual Interface NTU to Support Standalone Products
The eircom dual Interface NTU provided incorporates a splitter and supports the provision of both a VDSL2
and a POTS connection over the same copper pair as required. It will also support the provision of a VDSL2
connection on its own.
Incorporation of VoIP into the internal wiring is outside the scope of this document and is not covered.
This NTU is the demarcation point between the eircom external line plant (‘the eircom network’) and the
Operator/End-User’s internal wiring and CPE (End-Users Premises Equipment).
2. Right to make changes
This manual is specific to NGA National Roll-Out only. The manual is subject to change. These changes can
be based on feedback and any technical and/or operational considerations that may arise as part of NGA
National Roll-Out. This document may also be modified to meet any changes or enhancements to the NGA
products.
3. Connection from the FTTC Cabinet
The Dual Interface Copper NTU has two interfaces. It has an internal splitter support both a VDSL2
connection and POTS on the same copper pair from the cabinet. On the left is the VDSL2 Interface and the
POTS interface is on right as shown in Figure 1 Part (a).
+
=
(a) NTU
(b) Base of NTU
(c) Rear of
Removable
Faceplate
Line In terminates on
L1 and L2
(d) Rear of
Base
Figure 1: NTU Connection from FTTC Cabinet
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The Incoming line from the FTTC cabinet is terminated on the L1 and L2 terminals at Rear of NTU Base as
shown in Figure 1 Part (d). All internal wiring must be disconnected from the line in from the FTTC cabinet to
the NTU so that a clean connection from the cabinet to the Copper NTU is made.
4. Installation of NTU
The initial installation of the NTU should be at the nearest suitable location to the line entry into the EndUsers Premises / house at the same level as the electrical sockets, approx. 450mm, and as close as
possible to the ETU (“External Terminating Unit”). There should be no internal extension wiring connected to
the line before the point where it is terminated on the NTU. The NTU should always be located in an
accessible position. The NTU should be mounted in such a place that only the End-User that is served from
it, can access it (or provide access to it).
 If the location for the NTU is flush mounting, ensure that the flush box is clean and dry and free from
plaster.
 Remove the packaging from the unit.
 Remove the customer cover. (See Figure 1(a))
 If the NTU is surface mounted, select two wall mounting holes in the back box.
 Select a hole in base for network wiring cable entry.
 Secure the back box with screws and rawlplugs if necessary (Figure 2.).
 Route cable through network cable entry point.
 Strip the cable outer sheath.
 Connect the exchange line to L1 and L2. (Figure 2)
 Secure the eircom connection unit to the back box or flush box (Figure 1(a)).
L1
L2
Figure 2: Eircom NTU Base with Back Box
.
5. POTS with VDSL2
In this scenario POTS /PSTN is provided along with VDSL2 for a VUA or Bitstream Plus connection for the
NGA national Roll-Out. The splitter in the NTU isolates the POTS from the DSL and the POTS is available
as normal through the NTU splitter face plate.
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The alarm wiring and internal POTS distribution are taken off the splitter face plate.
NGA VUA/BS+
Line In
Internal Wiring
Activity
NTU
+ Splitter
Alarm In
Alarm Out
S
POTS for internal Distribution
The DSL port of the Home Gateway is
plugged in to the DSL socket in the
splitter facing plate
DSL
Home
Gate
way
POTS appears on the phone socket on
the splitter facing plate
Alarm can also be wired off alarm
terminals on splitter facing plate
Figure 3: Wiring diagram for POTS + VDSL2 Scenario
POTS
DSL
Figure 4: DSL and POTS Ports on the Splitter facing plate
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Alarm Connections,
IN Pair to Alarm
OUT Pair from Alarm
Cut these resistors
for Alarm Installation
Internal Wiring taken
from L1 and L2
Figure 5: Wiring of Rear of Faceplate (Splitter Module)
Making the correct alarm “Alarm IN” and “Alarm OUT” connections on the Insulation Displacement block as
shown in Figure 4 and cutting the resistors as indicated, connects the alarm so it will have priority on the
POTS line in the event of an outgoing call by the alarm unit. The internal wiring connection as shown,
connects the internal wiring to the POTS output from the internal splitter at L1 and L2 as indicated in Figure
5. If the internal wiring is connected to this point it is isolated appropriately from the VDSL2 connection.
(Note: This is different to the L1 and L2 shown in Figure 1 Part (d) which are the input connections from the
FTTC cabinet to the splitter)
6. Standalone VDSL2
In this scenario there is no POTS service provided to the End-User over the same copper pair.
The NTU is connected to the line in from the FTTC cabinet as shown already in Figure 1 for a connection
with both VDSL2 and POTS. This results in the following configuration shown below in Figure 6:
NGA VUA/BS+
Line In
Internal Wiring
Activity
NTU
DS
L
Home
Gate
way
Figure 6: Wiring diagram for VDSL2 Standalone scenario
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The Incoming line from FTTC cabinet is terminated on the L1 and L2 terminals at Rear of NTU Base as
shown in Figure 1 Part (d). All internal wiring must be disconnected from the line in from the FTTC cabinet to
the NTU so that a clean connection form the cabinet to the Copper NTU is made.
The internal wiring should not be connected to the Copper NTU in a standalone scenario as there is no
POTS output from the splitter.
Where a VoIP or similar POTS emulation service is being provided as a voice solution, the End-User wiring
may need to be rearranged and terminated appropriately and connected the Operator’s CPE as required.
This is the responsibility of the Operator/End-User.
The Operator/End-User is also responsible for providing a solution to any alarm circuits that may have
previously used a POTS-based product and which they may be migrating to a standalone configuration.
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Appendix II
ONT Installation Manual
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ONT Installation Manual for NGA FTTH Connections in National Roll-Out
ONT Installation Manual for
NGA FTTH Connections in
National Roll-Out
Version 2.0
October
2012
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Contents
Version 2.0 ................................................................................................................................. 59
Contents ..................................................................................................................................... 60
1.
Introduction....................................................................................................................... 61
The purpose of this document is to describe the installation of the NGA FTTH fibre NTU
and GPON ONT. ......................................................................................................................... 61
Internal wiring is outside the scope of this document and is not covered. ........................... 61
2.
Right to make changes .................................................................................................... 61
3.
Installation of Fibre NTU .................................................................................................. 61
The location should be dry and accessible to enable eircom staff to complete the
installation.................................................................................................................................. 61
At the fibre NTU either a field installed connector is fitted on one fibre or a pre terminated
fibre cable is used. .................................................................................................................... 61
Figure 1: Customer premises ................................................................................................... 62
4.
Connecting the fibre NTU to the ONT.............................................................................. 62
An RJ45 connection is used to connect the ONT to the CPE. ................................................ 62
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1. Introduction
The purpose of this document is to describe the installation of the NGA FTTH fibre NTU and GPON ONT.
Internal wiring is outside the scope of this document and is not covered.
The fibre NTU is the termination point of the eircom external line plant in the premises. The ONT is the
FTTH demarcation point between Eircom’s FTTH Access network and the Operator’s CPE.
2. Right to make changes
This manual is specific to NGA National Roll-Out only. The manual is subject to change. These changes can
be based on feedback and any technical and/or operational considerations that may arise as part of NGA
National Roll-Out. This document may also be modified to meet any changes or enhancements to the NGA
products.
3. Installation of Fibre NTU
The eircom Fibre NTU will be generally installed adjacent to the Copper NTU. On occasion it will be located
elsewhere, with this decision driven by the cable entry point. Where required a hole is drilled through the
wall of the premises to enable the fibre NTU to be installed. Standard safety practice applies to the drilling of
such holes.
The location should be dry and accessible to enable eircom staff to complete the installation.
A two fibre cable is used from the Fibre distribution point to the Fibre NTU via the ETU (External
Terminating Unit - where installed). The fibre NTU is located at a point inside the end-user premises,
adjacent to the ETU or cable entry point.
At the fibre NTU either a field installed connector is fitted on one fibre or a pre terminated fibre cable is used.
The fibre NTU is wall mounted. The dimensions of the fibre NTU are approximately 28mm deep 90mm high
and 70mm wide. The optical port is fitted with a shutter.
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Figure 1: Customer premises
.
4. Connecting the fibre NTU to the ONT
A pre terminated fibre patch cord usually of 1 meter length is used to connect the fibre NTU to the Optical
Network Termination (ONT). The ONT synchronises with the GPON equipment in the exchange. The ONT
requires a mains power socket. The power socket is provided by the end-user.
The ONT can be stand alone or wall mounted, however wall mounting is preferred. Usually a wall fitting is
also used. The ONT is fitted to the wall with a base plate.
Mounting
Wall mounted
Dimensions
143 mm (L) x 113 mm (W) x 30 mm (H)
Weight
200g (not including power adapter)
Power adapter type
Directly moulded onto a BS 1363 3-pin AC plug
Power adapter input
100–240 VAC, 50–60 Hz
System power supply
11–14 VDC, 1A (Maximum power consumption:
approx. 5W)
Power lead length
1.5m
End-User Facing Port
Auto-sensing 10/100/1000M Base-T Ethernet port
(RJ-45)
An RJ45 connection is used to connect the ONT to the CPE.
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Figure 2: ONT connection points
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