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Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 212

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Client-1 configuration

Client-1(config)# spanning-tree single 802-1w

Client-1(config)# show 802-1w vlan 1905

Single spanning tree is enabled. use "show 802-1w" command.

VLAN is a member of global SSTP - IEEE 802-1w

PORT 5/1/47 - FORWARDING

PORT 5/1/48 - FORWARDING

PORT 7/1/1 - FORWARDING

PORT 7/1/2 - FORWARDING

PORT 7/1/3 - FORWARDING

PORT 8/1/1 - FORWARDING

PORT 8/1/2 - FORWARDING

PORT 8/1/3 - FORWARDING

PORT 8/1/45 - FORWARDING

Client-1(config)#

Client-2 configuration

Client-2(config)# spanning-tree single 802-1w

Client-2(config)# end

Client-2(config)# show 802-1w vlan 1905

Single spanning tree is enabled. use "show 802-1w" command.

VLAN is a member of global SSTP - IEEE 802-1w

PORT 1/1/1 - FORWARDING

PORT 1/1/2 - FORWARDING

PORT 1/1/3 - FORWARDING

PORT 2/1/47 - BLOCKING

PORT 2/1/48 - BLOCKING

PORT 3/1/1 - FORWARDING

PORT 3/1/2 - FORWARDING

PORT 3/1/3 - FORWARDING

Client-2(config)#

Example 3: Configure Multiple Spanning Tree (MSTP) on the MCT Clients

MSTP (802.1s) allows mutliple VLANs to be managed by a single STP instance, and several VLANs
can be mapped to a reduced number of spanning-tree instances. Use MSTP on MCT clients to ensure
loop-free topology for one or more VLANs that have a similar Layer 2 topology.

MSTP requires that BPDU flooding be enabled on the MCT Cluster devices. This example is based on
the network topology shown in

Figure 38

on page 209.

Router-1 configuration

Router-1(config)# bpdu-flood-enable

Warning - Any recieved untagged BPDUs will now be flooded to all the ports.

Router-2 configuration

Router-2(config)# bpdu-flood-enable

Warning - Any received untagged BPDUs will now be flooded to all the ports.

Client-1 configuration

Client-1(config)# mstp scope all

Enter MSTP scope would remove STP and topology group related configuration for system

Are you sure? (enter ‘y’ or ‘n’): y

‘MSTP Start’ need to be entered in order to activate this MSTP feature

Client-1(config)# mstp start

Client-1(config)# mstp instance 1 vlan 1901

Example 3: Configure Multiple Spanning Tree (MSTP) on the MCT Clients

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FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

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