Cisco Catalyst 4500 Series - Page 784

26-14
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 26 Configuring Optional STP Features
Configuring Bridge Assurance
Configured Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
VLAN0199 0 0 0 5 5
VLAN0200 0 0 0 4 4
VLAN0128 0 0 0 4 4
---------------------- -------- --------- -------- ---------- ----------
3 vlans 0 0 0 13 13
This example shows how to verify if GigabitEthernet 5/8 (configured as a network port), is in a normal
state. (From the show spanning-tree summary output above, we know that Bridge Assurance is enabled
on GigabitEthernet 5/8).
Switch# show spanning-tree vlan
Sep 17 09:51:36.370 PDT: %SYS-5-CONFIG_I: Configured from console by console2
VLAN0200
Spanning tree enabled protocol rstp
Root ID Priority 2
Address 7010.5c9c.5200
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 2 (priority 0 sys-id-ext 2)
Address 7010.5c9c.5200
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 0 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi5/7 Desg FWD 4 128.1 P2p Edge
Gi5/8 Desg FWD 3 128.480 P2p Network
Gi5/9 Desg FWD 4 128.169 P2p Edge
Gi5/10 Desg FWD 4 128.215 P2p Network
This example shows how port GigabitEthernet 5/8 (configured as a network port), is currently in the
Bridge Assurance inconsistent state:
Note The output shows the port type as network and *BA_Inc, indicating that the port is in an
inconsistent state.
Switch# show spanning-tree vlan
VLAN200
Spanning tree enabled protocol rstp
Root ID Priority 32778
Address 0002.172c.f400
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 0002.172c.f400
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gia5/8 Desg BKN*4 128.270 Network, P2p *BA_Inc