Cabletron Systems SmartSwitch manual Configuring Spanning Tree

Chapter 3: Bridging Configuration Guide

SSR

A B C

The corresponding bridge tables for address-based and flow-based bridging are shown below. As shown, the bridge table contains more information on the traffic patterns when flow-based bridging is enabled compared to address-based bridging.

Address-Based Bridge Table	Flow-Based Bridge Table
A (source)	A → B
B (source)	B → A
C (destination)	B → C
	A → C

With the SSR configured in flow-based bridging mode, the network manager has “per flow” control of layer-2 traffic. The network manager can then apply Quality of Service (QoS) policies or security filters based on layer-2 traffic flows.

To enable flow-based bridging on a port, enter the following command in Configure mode.

Configure a port for flow-based bridging.

port flow-bridging <port-list>all-ports

To change a port from flow-based bridging to address-based bridging, enter the following command in Configure mode:

Change a port from flow- based bridging to address- based bridging.

negate <line-number of active config containing command>: port flow-bridging<port-list>all-ports

Configuring Spanning Tree

Note: Some commands in this facility require updated SSR hardware. Please refer to the Release Notes for details.

SmartSwitch Router User Reference Manual 61