Cabletron Systems SmartSwitch manual Monitoring Bridging, Configuring Layer-2 Filters

Chapter 3: Bridging Configuration Guide

Configuring Layer-2 Filters

Layer-2 security filters on the SSR allow you to configure ports to filter specific MAC addresses. When defining a Layer-2 security filter, you specify to which ports you want the filter to apply. Refer to the “Security Configuration Chapter” for details on configuring Layer-2 filters. You can specify the following security filters:

•Address filters

These filters block traffic based on the frame's source MAC address, destination MAC address, or both source and destination MAC addresses in flow bridging mode. Address filters are always configured and applied to the input port.

•Port-to-address lock filters

These filters prohibit a user connected to a locked port or set of ports from using another port.

•Static entry filters

These filters allow or force traffic to go to a set of destination ports based on a frame's source MAC address, destination MAC address, or both source and destination MAC addresses in flow bridging mode. Static entries are always configured and applied at the input port.

•Secure port filters

A secure filter shuts down access to the SSR based on MAC addresses. All packets received by a port are dropped. When combined with static entries, however, these filters can be used to drop all received traffic but allow some frames to go through.

Monitoring Bridging

The SSR provides display of bridging statistics and configurations contained in the SSR.

To display bridging information, enter the following commands in Enable mode.

Show IP routing table.	ip show routes
Show all MAC addresses currently	l2-tables show all-macs
in the l2 tables.
Show l2 table information on a	l2-tables show port-macs
specific port.
Show information the master MAC	l2-tables show mac-table-stats
table.
Show information on a specific	l2-tables show mac
MAC address.

66 SmartSwitch Router User Reference Manual