Specifications

show spanning-tree
232
Item Meaning Displayed information
applied.
RootGuard Root guard Indicates that the port applies the root guard
functionality.
Compatible Compatible mode Indicates that the port is operating in compatible
mode for an MSTP Spanning Tree Protocol. Ports
operating in compatible mode do not perform rapid
status transitions.
Example 4
Figure 17-4 Example of displaying detailed PVST+ Spanning Tree information
> show spanning-tree vlan 2,4094 port 0/10-11,0/16-17,0/20 detail
Date 2008/11/14 11:26:46 UTC
VLAN 2 PVST+ Spanning Tree:Enabled Mode:PVST+
Bridge ID
Priority:32770 MAC Address:00ed.f010.0001
Bridge Status:Designated Path Cost Method:Short
Max Age:20 Hello Time:2
Forward Delay:15
Root Bridge ID
Priority:32770 MAC Address:0012.e2c4.2772
Root Cost:19
Root Port:0/12
Max Age:20 Hello Time:2
Forward Delay:15
Port Information
Port:0/11 Down
Status:Disabled Role:-
Priority:128 Cost:-
Link Type:- Compatible Mode:-
Loop Guard:ON(Blocking) PortFast:OFF
BPDUFilter:OFF RootGuard:OFF
Port:ChGr:1 Up
Status:Blocking Role:Designated
Priority:128 Cost:19
Link Type:- Compatible Mode:-
Loop Guard:OFF PortFast:OFF
BPDUFilter:OFF RootGuard:ON(Blocking)
BPDU Parameters(2008/11/14 11:26:45):
Designated Root
Priority:32770 MAC address:0012.e2c4.2772
Designated Bridge
Priority:32770 MAC address:0012.e2c4.2772
Root Cost:0
Port ID
Priority:128 Number:66
Message Age Timer:1(0)/20
VLAN 4094 PVST+ Spanning Tree:Enabled Mode:PVST+
Bridge ID
Priority:36862 MAC Address:00ed.f010.0001
Bridge Status:Designated Path Cost Method:Short
Max Age:20 Hello Time:2
Forward Delay:15
Root Bridge ID
Priority:36862 MAC Address:0012.e2c4.2772