Ethernet Switch Network Modules
Connecting Cisco Ethernet Switch Network
Modules to the Network
Revised: May 1, 2008, OL-12821-01
This guide describes how to connect Cisco Ethernet switch network modules to your network. It contains
the following sections:
•
Ethernet Switch Network Modules, page 1
•
Requirements for Installing Two Ethernet Switch Network Modules in a Single Chassis, page -2
•
Power Considerations, page 2
•
Connecting the Ethernet Switch Network Module to the Network, page 3
•
Adding an Optional Gigabit Ethernet Expansion Board, page 4
•
Adding an Optional Power Board, page 6
•
Ethernet Switch Network Module LEDs, page 9
•
Related Documents, page 11
•
Obtaining Documentation, Obtaining Support, and Security Guidelines, page 11
Ethernet Switch Network Modules
This guide explains how to install the 16- and 36-port Ethernet switch network modules. The Ethernet
switch network module is a modular, high-density voice network module that provides Layer 2 switching
across Ethernet ports. The 16-port Ethernet switch network module has 16 10/100BASE-TX ports and an
optional 10/100/1000BASE-T Gigabit Ethernet port. The 36-port Ethernet switch network module has 36
10/100BASE-TX ports and 2 optional 10/100/1000BASE-T Gigabit Ethernet ports. The 36-port Ethernet
switch network module requires a double-wide slot. An optional power module can also be added to
provide inline power for IP telephones.
The10/100BASE-TX ports and Gigabit Ethernet ports on the Ethernet switch network module are
connected to the network using RJ-45 connectors on the front panel. The power module is connected to
an external power supply using a power connection cable. The front of the 16-port card is shown in
Figure 1. The front panel of the 36-port card is shown in Figure 2.
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Connecting Cisco Ethernet Switch Network Modules to the Network
Requirements for Installing Two Ethernet Switch Network Modules in a Single Chassis
Figure 1
NMESW16
16-Port Ethernet Switch Network Module
FastEthernet Ports
15x
8x
Ext
Pwr
-48V
GE
10/100/
1000
Base-Tx
EN
0x
15x 7x
Figure 2
6x
13x
5x
12x
4x
11x 3x
10x
2x
9x
1x
8x
0x
36-Port Ethernet Switch Network Module
FastEthernet Ports
35x
18x
Ext
Pwr
GE1
-48V
GE0
10/100/
1000
Base-Tx
EN
10/100/1000 17x
Base-Tx
0x
35x 17x
34x 16x
33x 15x
32x 14x
31x 13x
30x 12x
29x 11x
28x 10x
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17
24x
6x
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5x
22x
4x
21x 3x
20x
2x
19x
1x
18x
0x
72004
NMDESW36
14x
62347
7x
Requirements for Installing Two Ethernet Switch Network
Modules in a Single Chassis
A maximum of two Ethernet switch network modules can be installed in a single chassis. If two Ethernet
switch network modules of any type are installed in the same chassis, the following configuration
requirements must be met:
•
Both Ethernet switch network modules must have an optional Gigabit Ethernet expansion board
installed.
•
An Ethernet crossover cable is connected to the two Ethernet switch network modules using the
optional Gigabit Ethernet expansion board ports.
•
Intrachassis stacking for the the optional Gigabit Ethernet expansion board ports is configured. For
information about intrachassis stacking configuration, see the 16- and 36-Port Ethernet Switch
Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 series feature document.
Without this configuration and connection, duplications will occur in the VLAN databases, and
unexpected packet handling may occur.
Power Considerations
The Ethernet switch network module supports inline powering of IP telephones with –48-V power. This
allows IP phones to be plugged into the standard RJ-45 jack and be powered from this source rather than
having a separate plug into an AC wall outlet. The Ethernet switch network module requires delivery of
–48-V power to the network module in order to provide inline powering of IP telephones.
Cisco 2800 series, Cisco 3700 series, and Cisco 3800 series routers supply –48 V power internally (with
AC-IP power supplies) to the Ethernet switch service modules. To support Cisco 2600 series and Cisco
3600 series routers, which do not supply –48-V internal power, the network module has an external
connector for connection to an external –48-V power supply.
The Ethernet switch network module distributes the –48-V power to each of the Ethernet ports that are
configured for line power. Each port can be independently configured for line power.
Connecting Cisco Ethernet Switch Network Modules to the Network
2
Connecting Cisco Ethernet Switch Network Modules to the Network
Connecting the Ethernet Switch Network Module to the Network
Note
When using the NM-16ESW network module with the MWR 1941-DC router, shielded cables are
required, and IP phone inline power is not supported.
Restrictions for Cisco 3700 Series Routers
Cisco 3700 series routers contain internal –48-V power supplies to supply power to the Ethernet switch
network module.
For the Cisco 3745 router, the following specifications apply:
•
The Cisco 3745 router can have one or two internal –48-V power supplies. The internal supplies of
the Cisco 3745 router are configured to be redundant by default.
•
With a single power supply, the Cisco 3745 router can provide up to 360 W. This is enough power
for up to 36 10-W IP phones. With two nonredundant power supplies, 640 W can be provided,
supporting up to 64 10-W IP phones.
•
The Cisco 3745 router main board has four independent signals to indicate status on both internal
power supplies. Changes on the state of any of these four signals interrupts the main processor on
the Cisco 3745 router so software can take the appropriate action.
Cisco 3725 routers have a single –48-V supply. Cisco 3725 routers do not report any power supply status.
The only software indication of –48-V status is the –48-V status bit provided on the 16-port Ethernet
switch network module board.
Restrictions for Cisco 2600 Series and Cisco 3600 Series Routers
Cisco 2600 series and Cisco 3600 series routers do not supply –48-V power, so an external –48-V supply
is required to support inline power for IP phones. This external power supply connects to the Ethernet
switch network module faceplate with a cable.
An external power supply plugged into an Ethernet switch network module provides power only for that
specific network module. To supply redundant power, a Y cable can be used so that two external power
supplies are connected to the same card.
For more information about external power supplies, see the Cisco External Power Supply for Cisco
Ethernet Switch Network Modules Installation Guide.
Connecting the Ethernet Switch Network Module to the
Network
Warning
Voltages that present a shock hazard can exist on inline power circuits if interconnections are made
by using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such
interconnection methods unless the exposed metal parts are in a restricted access location and users
and service people who are authorized to access the location are made aware of the hazard. A
restricted access area can be accessed only through the use of a special tool, lock and key, or other
security means. Statement 1072
Connecting Cisco Ethernet Switch Network Modules to the Network
3
Connecting Cisco Ethernet Switch Network Modules to the Network
Adding an Optional Gigabit Ethernet Expansion Board
The Ethernet switch network module is connected to an Ethernet switch or hub with RJ-45 cables. (See
Figure 3.) RJ-45 cables are not provided with the network module. For ordering information, see the
“Obtaining Technical Assistance” section on page xi.
Note
When using the NM-16ESW with the MWR 1941-DC router, shielded cables are required.
Figure 3
NMESW16
16-Port Ethernet Switch Card Connected to Ethernet Switch or Hub
FastEthernet Ports
15x
8x
Ext
Pwr
-48V
GE
10/100/
1000
Base-Tx
EN
7x
0x
15x 7x
14x
6x
13x
5x
12x
4x
11x 3x
10x
2x
9x
1x
8x
0x
Ethernet port
(RJ-45)
62348
Ethernet cable
Ethernet hub
Adding an Optional Gigabit Ethernet Expansion Board
An optional Gigabit Ethernet expansion board can be installed to support a 10/100/1000BASE-T Gigabit
Ethernet port.
To install a Gigabit Ethernet expansion board, follow these steps:
Step 1
Use a Phillips screwdriver to remove the cover on the Gigabit Ethernet board port, as shown in Figure 4.
Figure 4
NMESW16
Gigabit Ethernet Board Port Cover on the Ethernet Switch Network Module
External power supply port cover
15x
FastEthe
rnet Ports
8x
-48V
15x 7x
14x 6x
13x 5x
12x 4x
11x 3x
10x 2x
0x
9x
1x
8x
GE
10/100/
1000
Base-Tx
EN
62426
Ext
Pwr
7x
0x
Gigabit Ethernet port cover
Step 2
Guide the external connector through the Gigabit Ethernet expansion port opening on the card faceplate.
Step 3
Insert the connector on the Gigabit Ethernet expansion board into the board connector on the network
module. Inspect the board to ensure that the board is fully connected. (See Figure 5 for 16-port Ethernet
switch network modules or Figure 6 for 36-port Ethernet switch network modules.)
Connecting Cisco Ethernet Switch Network Modules to the Network
4
Connecting Cisco Ethernet Switch Network Modules to the Network
Adding an Optional Gigabit Ethernet Expansion Board
Step 4
Be sure to press firmly on the Gigabit Ethernet expansion board until the board seats correctly onto the
connector. When the Gigabit Ethernet expansion board is seated properly, the standoff is flush with the
board. If this board is not firmly seated, failures can occur.
Insert the screw from the board installation kit through the Gigabit Ethernet expansion board into the
standoff on the network module.
Figure 5
Installing a Gigabit Ethernet Expansion Board on a 16-Port Cisco Ethernet Switch
Network Module
NM
ES 16 W15
x
Fa
stE
the
rne
tP
ort
s
7x
15
x
7x
14
x
6x
13
x
5x
12
x
4x
11
x
62349
Caution
8x
3x
10
x
2x
-48
V
9x
1x
0x
8x
0x
Ex
Pwt
r
G
10 E
10/100
Ba00 /
se
-T
E x
N
Connecting Cisco Ethernet Switch Network Modules to the Network
5
Connecting Cisco Ethernet Switch Network Modules to the Network
Adding an Optional Power Board
Figure 6
Installing a Gigabit Ethernet Expansion Board on a 36-Port Cisco Ethernet Switch
Network Module
NM
ES D36 W-
3E5x
P xt
GE
1
10
Ba/10
se 0/1
-T 00
x 0
wr
17
x
35
x
17
x
34
x
16
x
33
x
15
x
32
x
14
x
31
x
Fa
stE
th
er
ne
tP
or
ts
13
x
30
x
12
x
29
x
11
x
28
x
10
x
27
x
9x
26
x
8x
25
x
17
24
x
6x
75279
23
x
5x
22
x
4x
21
x
18
x
3x
20
x
2x
19
x
-48
V
1x
18
x
0x
0x
8
x
E
Exxt
P
Pwwrt
r
G
10 E
10/100
Ba00 /
se
-Tx
EN
Adding an Optional Power Board
An optional power board can be used if the Ethernet switch network module requires external –48-V
power for IP telephones. Installation and configuration of the external power supply system is described
in the Cisco External Power Supply for Cisco Ethernet Switch Network Modules Installation Guide.
Connecting Cisco Ethernet Switch Network Modules to the Network
6
Connecting Cisco Ethernet Switch Network Modules to the Network
Adding an Optional Power Board
To install power boards, follow these steps:
Step 1
Use a Phillips screwdriver to remove the cover on the external power board port, as shown in Figure 7.
Figure 7
NMESW16
Power Board Port Cover on the Ethernet Switch Network Module
External power supply port cover
15x
FastEthe
rnet Ports
8x
-48V
15x 7x
14x 6x
13x 5x
12x 4x
11x 3x
10x 2x
0x
9x
1x
8x
GE
10/100/
1000
Base-Tx
EN
62426
Ext
Pwr
7x
0x
Gigabit Ethernet port cover
Step 2
On the power board, remove the thumb screws on either side of the power board port. Put these in a safe
place, because they will be replaced when the power board is installed.
Step 3
Guide the external connector through the power board port opening on the card faceplate.
Step 4
Insert the connector on the power board into the connector on the network module. (See Figure 8 for
16-port Ethernet switch network modules and Figure 9 for 36-port Ethernet switch network modules.)
Note
Be sure to press firmly on the power board until the board seats correctly onto the connector.
Step 5
Insert the screws from the board installation kit through the power board into the standoffs on the
network module.
Step 6
Replace the thumbscrews on either side of the power board port. Make sure that the thumbscrews are
tightened firmly.
Warning
Step 7
Do not connect the external power supply cable to the power connector on the front of the network
module until the network module has been inserted into the router chassis.
After installing the network module into the chassis, connect the power cable to the power module
connector on the front of the network module. See the Cisco External Power Supply for Cisco Ethernet
Switch Network Modules Installation Guide for more information.
Connecting Cisco Ethernet Switch Network Modules to the Network
7
Connecting Cisco Ethernet Switch Network Modules to the Network
Adding an Optional Power Board
Figure 8
Installing a Power Board in a 16-Port Ethernet Switch Network Module
NM
ES 16 W15
x
Fa
stE
the
rne
tP
ort
s
7x
7x
14
x
6x
13
x
5x
12
x
4x
11
x
62350
15
x
8x
3x
10
x
2x
-48
V
9x
1x
0x
8x
0x
Ex
Pwt
r
G
10 E
10/100
Ba00 /
se
-T
E x
N
Connecting Cisco Ethernet Switch Network Modules to the Network
8
Connecting Cisco Ethernet Switch Network Modules to the Network
Ethernet Switch Network Module LEDs
Figure 9
Installing a Power Board in a 36-Port Ethernet Switch Network Module
NM
ES D36 W-
35
x
GE
1
10
Ba/10
se 0/1
-T 00
x 0
17
x
35
x
17
x
34
x
16
x
33
x
15
x
32
x
14
x
31
x
Fa
stE
th
er
ne
tP
or
ts
13
x
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x
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x
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x
11
x
28
x
10
x
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x
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x
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x
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24
x
6x
23
x
5x
72275
22
x
4x
21
x
18
x
3x
20
x
2x
19
x
-48
V
1x
18
x
0x
0x
8
x
Ex
Pwt
r
G
10 E
10/100
Ba00 /
se
-Tx
EN
Ethernet Switch Network Module LEDs
Figure 10 shows 16-port Ethernet switch network module LEDs. Figure 11 shows 36-port Ethernet
switch network module LEDs. Table 1 describes their meaning.
Connecting Cisco Ethernet Switch Network Modules to the Network
9
Connecting Cisco Ethernet Switch Network Modules to the Network
Ethernet Switch Network Module LEDs
Figure 10
16-Port Ethernet Switch Network Module LEDs
Gigabit
Ethernet LED
-48V LED
NMESW16
FastEthernet Ports
15x
8x
Ext
Pwr
-48V
GE
10/100/
1000
Base-Tx
EN
0x
15x 7x
14x
6x
13x
5x
12x
4x
11x 3x
10x
2x
9x
1x
8x
62586
7x
0x
Ethernet port
LEDs
Figure 11
Enable LED
36-Port Ethernet Switch Network Module LEDs
Gigabit
Ethernet LED
Gigabit
Ethernet LED
-48V LED
NMDESW36
FastEthernet Ports
18x
Ext
Pwr
-48V
GE0
10/100/
1000
Base-Tx
EN
10/100/1000 17x
Base-Tx
0x
35x 17x
34x 16x
33x 15x
32x 14x
31x 13x
30x 12x
29x 11x
28x 10x
27x 9x
26x
8x
25x
17
24x
6x
23x
5x
22x
4x
21x 3x
20x
Ethernet port
LEDs
Table 1
2x
19x
1x
18x
0x
72005
35x
GE1
Enable LED
Ethernet Switch Network Module LEDs
LED
Meaning
0–16 (for 16-port)
0–36 (for 36-port)
Green indicates that individual Ethernet port is functioning.
–48-V
Off indicates that no –48-V power is going to the network module.
Green indicates –48-V power is present on the network module.
Amber indicates that there is a problem with one or more of the internal or external
–48-V power supplies.
GE
Green indicates that the Gigabit Ethernet port is functioning.
EN
Green indicates that the module has passed its self-tests and is available to
the router.
Connecting Cisco Ethernet Switch Network Modules to the Network
10
Connecting Cisco Ethernet Switch Network Modules to the Network
Related Documents
Related Documents
For additional information, see the following documents and resources.
Related Topic
Document Title
Regulatory compliance and safety
information
Cisco Network Modules and Interface Cards Regulatory Compliance and Safety
Information
http://www.cisco.com/en/US/docs/routers/access/interfaces/rcsi/IOHrcsi.html
Cisco IOS software website and reference
documentation
Cisco IOS Software
http://www.cisco.com/web/psa/products/index.html?c=268438303
Obtaining Documentation, Obtaining Support, and Security
Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback,
security guidelines, and also recommended aliases and general Cisco documents, see the monthly
What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical
documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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Connecting Cisco Ethernet Switch Network Modules to the Network
11
Connecting Cisco Ethernet Switch Network Modules to the Network
Obtaining Documentation, Obtaining Support, and Security Guidelines
Connecting Cisco Ethernet Switch Network Modules to the Network
12
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