Table Of Contents - Cisco NM-8B-U - HW ROUTERS L-M User Manual

Feature Overview
Feature Overview
This document explains how to configure the 16- and 36-port Ethernet switch network modules. This
network module is supported on Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series routers.
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 two optional 10/100/1000BASE-T
Gigabit Ethernet ports. The gigabit Ethernet can be used as an uplink port to a server or as a stacking
link to another 16- or 36-port Ethernet switch network modules in the same system. 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.
The 16- and 36-port Ethernet switch network modules support the following:
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Layer 2 Ethernet Interfaces
Layer 2 Ethernet Switching
Ethernet switch network modules support simultaneous, parallel connections between Layer 2 Ethernet
segments. Switched connections between Ethernet segments last only for the duration of the packet. New
connections can be made between different segments for the next packet.
Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ
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16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series
Layer 2 Ethernet Interfaces, page 2
Switch Virtual Interfaces, page 5
Routed Ports, page 5
VLAN Trunk Protocol, page 5
EtherChannel, page 7
802.1x Port-Based Authentication, page 8
Spanning Tree Protocol, page 12
Cisco Discovery Protocol, page 24
Switched Port Analyzer, page 24
Network Security with ACLs, page 25
Quality of Service, page 29
Maximum Number of VLAN and Multicast Groups, page 35
IP Multicast Support, page 35
IGMP Snooping, page 35
Global Storm-Control, page 38
Per-Port Storm-Control, page 40
Port Security, page 40
Ethernet Switching in Cisco AVVID Architecture, page 40
Stacking, page 41
Flow Control, page 41
Fallback Bridging, page 42