Specifications

270 Implementing IBM System Networking 10Gb Ethernet Switches
Run spanning-tree stp <STG number> bridge priority <0-65535> to configure the bridge
priority for VLAN 30, as shown in Example 6-27.
Example 6-27 Bridge priority configuration example
AGG-2#conf t
Enter configuration commands, one per line. End with Ctrl/Z.
AGG-2(config)#spanning-tree stp 30 bridge priority 4096
Sep 19 1:35:02 AGG-2 ALERT stg: STG 30, new root bridge
Sep 19 1:35:02 AGG-2 ALERT stg: STG 30, topology change detected
AGG-2(config)#^Z
AGG-2#
AGG-1#conf t
Enter configuration commands, one per line. End with Ctrl/Z.
AGG-1(config)#spanning-tree stp 30 bridge priority 0
Aug 17 10:04:48 AGG-1 ALERT stg: STG 30, new root bridge
Aug 17 10:04:48 AGG-1 ALERT stg: STG 30, topology change detected
AGG-1(config)#^Z
AGG-1#
The following commands appear under the Spanning Tree section of the configuration:
spanning-tree stp 30 bridge priority 0
spanning-tree stp 30 vlan 30
spanning-tree stp 30 bridge priority 4096
spanning-tree stp 30 vlan 30
For more detailed configuration options for Spanning Tree (global commands, timers, and
ports parameters), see the guides referenced in 6.7, “More information” on page 284.
To verify the Spanning Tree configuration and operation, run shown spanning-tree stp <STG
number> [bridge|information] for detailed information about STP operation. If you do not
provide an STG number, the command output shows the STP information for all groups, as
shown in Example 6-28. If you want to narrow the output to a specific STG, add the
optional parameters.
Example 6-28 show spanning-tree command output
ACC-3#show spanning-tree stp 30
------------------------------------------------------------------
Current Spanning Tree Group 30 settings: ON (PVRST)
Bridge params: Priority Hello MaxAge FwdDel Aging
61440 2 20 15 300
VLANs: 30
STP Ports:
Port 1:14 : Priority 128, Path Cost 0, auto, edge, Spanning Tree turned OFF