Specifications

show spanning-tree
237
Item Meaning Displayed information
Message Age Timer Valid time of the received
BPDUs
Indicates how long received BPDUs are valid.
A hyphen (-) is displayed if this period has expired.
<current-time>(<time-BPDU-received>)/<maximum-tim
e>
<current-time>:
The time at which the BPDU is received plus the
time that has elapsed
<time-BPDU-received>:
The time that has elapsed when the BPDU is
received (Message Age of the received BPDU)
<maximum-time>:
Valid time (Max Age of the received BPDU)
Example 5
Figure 17-5 Example of displaying detailed information about Single Spanning Tree
> show spanning-tree single detail
Date 2008/11/14 11:42:35 UTC
Single Spanning Tree:Enabled Mode:STP
Bridge ID
Priority:32768 MAC Address:00ed.f010.0001
Bridge Status:Root Path Cost Method:Short
Max Age:20 Hello Time:2
Forward Delay:15
Root Bridge ID
Priority:32768 MAC Address:00ed.f010.0001
Root Cost:0
Root Port:-
Max Age:20 Hello Time:2
Forward Delay:15
Port Information
Port:0/1 Up
Status:Forwarding Role:Designated
Priority:128 Cost:19
Link Type:- Compatible Mode:-
Loop Guard:OFF PortFast:OFF
BPDUFilter:OFF RootGuard:ON
Port:0/2 Down
Status:Disabled Role:-
Priority:128 Cost:-
Link Type:- Compatible Mode:-
Loop Guard:OFF PortFast:OFF
BPDUFilter:OFF RootGuard:ON
:
Port:ChGr:1 Up
Status:Forwarding Role:Designated
Priority:128 Cost:19
Link Type:- Compatible Mode:-
Loop Guard:OFF PortFast:OFF
BPDUFilter:OFF RootGuard:ON
Port:ChGr:8 Down
Status:Disabled Role:-
Priority:128 Cost:-
Link Type:- Compatible Mode:-