Cisco WS-C4003 Software Guide - Page 111
Step 1, Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Releases 6.3 and 6.4
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Chapter 7 Configuring Spanning Tree Using PVST+ To configure the spanning tree bridge priority for a VLAN, perform this task in privileged mode: Step 1 Step 2 Task Set the bridge ID priority for a VLAN. Verify the bridge ID priority. Command set spantree priority bridge_ID_priority [vlan] show spantree [vlan] [active] This example shows the bridge ID when MAC address reduction is not enabled (default): Console> (enable) set spantree priority 30000 1 Spantree 1 bridge priority set to 30000. Console> (enable) show spantree 1 VLAN 1 Spanning tree mode PVST+ Spanning tree type ieee Spanning tree enabled Designated Root 00-60-70-4c-70-00 Designated Root Priority 16384 Designated Root Cost 19 Designated Root Port 2/3 Root Max Age 14 sec Hello Time 2 sec Forward Delay 10 sec Bridge ID MAC ADDR Bridge ID Priority Bridge Max Age 20 sec 00-d0-00-4c-18-00 30000 Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected 100 32 disabled 0 This example shows the bridge ID priority when MAC reduction is enabled: Console> (enable) set spantree priority 32768 1 Spantree 1 bridge ID priority set to 32769 (bridge priority: 32768 + sys ID extension: 1) Console> (enable) show spantree 1/1 1 VLAN 1 Spanning tree mode PVST+ Spanning tree type ieee Spanning tree enabled Designated Root 00-60-70-4c-70-00 Designated Root Priority 16384 Designated Root Cost 19 Designated Root Port 2/3 Root Max Age 14 sec Hello Time 2 sec Forward Delay 10 sec Bridge ID MAC ADDR Bridge ID Priority Bridge Max Age 20 sec 00-d0-00-4c-18-00 32769 (bridge priority: 32768, sys ID ext: 1) Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected 100 32 disabled 0 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 7-15