Cisco Catalyst 4500 Series Software Configuration Manual page 740

Configuring PVST+ Simulation
This example shows the spanning tree status when port Gi3/14 has been configured to disable PVST+
simulation and is currently in the peer type inconsistent state:
Switch# show spanning-tree
VLAN0010
Spanning tree enabled protocol mstp
Root ID
Bridge ID
Interface
---------------- ---- --- --------- -------- -------------------------
Gi3/14
This example shows the spanning tree summary when PVST+ simulation is enabled in the MSTP mode:
Switch# show spanning-tree summary
Switch is in mst mode (IEEE Standard)
Root bridge for: MST0
EtherChannel misconfig guard is enabled
Extended system ID
Portfast Default
PortFast BPDU Guard Default
Portfast BPDU Filter Default is disabled
Loopguard Default
UplinkFast
BackboneFast
Pathcost method used
PVST Simulation Default
Name
---------------------- -------- --------- -------- ---------- ----------
MST0
---------------------- -------- --------- -------- ---------- ----------
1 mst
This example shows the spanning tree summary when PVST+ simulation is disabled in any STP mode:
Switch# show spanning-tree summary
Switch is in mst mode (IEEE Standard)
Root bridge for: MST0
EtherChannel misconfig guard is enabled
Extended system ID
Portfast Default
PortFast BPDU Guard Default
Portfast BPDU Filter Default is disabled
Loopguard Default
UplinkFast
BackboneFast
Pathcost method used
PVST Simulation Default
Name
---------------------- -------- --------- -------- ---------- ----------
MST0
---------------------- -------- --------- -------- ---------- ----------
1 mst
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
23-38
Priority 32778
Address 0002.172c.f400
This bridge is the root
Hello Time 2 sec Max Age 20 sec
Priority 32778 (priority 32768 sys-id-ext 10)
Address 0002.172c.f400
Hello Time 2 sec Max Age 20 sec
Aging Time 300
Role Sts Cost
Desg BKN*4
is enabled
is disabled
is disabled
is disabled
is disabled
is disabled
is long
is enabled
Blocking Listening Learning Forwarding STP Active
2
2
is enabled
is disabled
is disabled
is disabled
is disabled
is disabled
is long
is disabled
Blocking Listening Learning Forwarding STP Active
2
2
Forward Delay 15 sec
Forward Delay 15 sec
Prio.Nbr Type
128.270 P2p *PVST_Peer_Inc
0 0
0 0
0 0
0 0
Chapter 23 Configuring STP and MST
0 2
0 2
0 2
0 2