Specifications

show spanning-tree
241
Item Meaning Displayed information
Designated Bridge Information about the
bridge that sent the BPDU
--
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC Address MAC address MAC address for root bridge
Root Cost Root path cost Root path cost of the bridge that sent the BPDU
Port ID Information about the port
that sent the BPDU
--
Priority Port priority 0 to 255
The lower the value, the higher the priority.
Number Port number 0 to 897
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 6
Figure 17-6 Example of displaying detailed information about Multiple Spanning Tree
> show spanning-tree mst detail
Date 2008/11/14 13:07:18 UTC
Multiple Spanning Tree: Enabled
Revision Level: 0 Configuration Name:
CIST Information Time Since Topology Change: 1:15:35
VLAN Mapped: 1,3-4093,4095
CIST Root Priority: 32768 MAC : 00ed.f010.0001
External Root Cost : 0 Root Port : -
Max Age : 20
Forward Delay : 15
Regional Root Priority: 32768 MAC : 00ed.f010.0001
Internal Root Cost : 0
Remaining Hops : 20
Bridge ID Priority: 32768 MAC : 00ed.f010.0001
Regional Bridge Status : Root Path Cost Method: Long
Max Age : 20 Hello Time : 2
Forward Delay : 15 Max Hops : 20
Port Information
Port:0/1 Up
Status : Forwarding Role : Designated