MII scan mode Wire-speed Layer 2/3 switching and Layer 4 policy

7 half and full-duplex 10/100 Mbps ports
MDC/MDIO: MII scan mode
Wire-speed Layer 2/3 switching and Layer 4 policy
based switching
120-byte packet header lookup all field remarkable
Address & policy lookup table embedded
Packet buffer embedded
4K VLAN support
IEEE 802.1Q support based on port, MAC, tag, subnet protocol
Stacked VLAN (Q-in-Q)
IGMP Snooping support
Broadcast storm filtering
Link Aggregation function - IEEE 802.3ad
Management support: SNMP, RMON, SMON
Flow control (IEEE 802.3x pause function)
Loop resolution – STP (Spanning Tree Protocol), Rapid STP
(802.1W), Per VLAN STP
IPv6 switching, tunneling
Wire-speed Layer 2/3 switching on all ports
Wire-speed NAT/NApT with up to 2K sessions
Wire-speed session detection and access control
MAC filtering, VLAN filtering, IP filtering
TCP/UDP Port filtering, DHCP snoop/ARP snoop filtering
NetBIOS, NetBEUI filtering, NBT (NetBIOS over TCP) filtering
IPX socket number filtering
Filtering rules can be added if necessary
ACL (access control list)
L1: Physical Port
L2: Destination MAC address
Source MAC address
Ethertype COS
L3: Source IP address
Destination IP address
Protocol ID
L4: Source port number
Destination port number
NetBIOS/NetBEUI, value/mask, range
unicast MAC, unknown MAC, multicast MAC
broadcast MAC, unicast IP packet, multicast IP packet
ACL Output
Remarking, VLAN ID insert, filtering, port redirection, port
mirroring, CPU redirection, CPU mirroring
L2 CoS, L3 IPv4 TOS, L3 IPv4 DSCP, L3 IPv4 IPprecedence packet type (unicast/multicast), IPv6 TC
Granularity, token bucket, priority based multi-stage
policing, operation position, port based policing, flow
based policing
Shaping - granularity 100Kbps
SPQ, DWRR and combination
Bandwidth limiting – token bucket: min. 1ms, max. 1s
Rate control support
Flow-based QoS:
filtering, CoS remarking, ToS remarking
VLAN insert/delete, port mirroring, CPU
redirection, per-flow bandwidth limiting
BPDU/PAUSE control packet processing
Broadcast/multicast strom filtering
3 kind of DLF (destination lookup fail) policy
Port-/Tag-based VLAN – 4096 entries
IP forwarding – 512 entry
NApT forwarding – 2048 entry
Port-forwarding (static NAPT)
Multicast forwarding – 256 entries
IPv6 switching
IGMP snooping
Q-in-Q processing
RGW (residential gateway),
or IAD (integrated access device)
AP (access point) with perfect NAT/NApT and QoS
Switch/router for SME: SOHO switch/router, IP sharer
Metro Ethernet switch: MPLS LES (Label Edge Switch)
IPv6 switch/router, NGcN switch
Hardwire 128 classification/ACL rules for 12-tuple
1. physical port
2. des. MAC
3. src. MAC
4. COS
6. Ethernet type
7. TOS
8. protocol ID
9. src. IP
10. des. IP
11. src. Port
12. des. Port
(128 x n) classification/ACL rules defined by Packet
Processor after hardwire classification
Minute per-flow bandwidth control:Flow-level bandwidth
metering by the Packet Processor Flows are defined
for any combination of 12-tuple
VOQs (virtual output queues): Each flow’s service policy
can be judged in reference to output queue status.
Priority remarking based on:
User priority bits of VLAN tag
Ether Type field value
TOS field value of IPv4 header
Flow label field value of IPv6 header
Prioritized packets assigned to 4 priority queues.
Mixed scheduler of strict priority queue (SPQ) and deficit
weighted round robin (DWRR) with 4-level priority
5xPHY + 2xMII;
or 4xMII + 3xMII; or 5xS3MII + 1xMII
SPI / Iocal bus for CPU
Power Supply
System Clock
CMOS 0.18 µ
1.8V Core, 3.3V I/O
125 MHz
Download PDF
Similar pages