Enterasys Networks D2G124-12P User Manual

show spantree stats

6-6 Spanning Tree Configuration

This example shows how to display the device’s Spanning Tree configuration:

D2(su)->show spantree stats               
                                                 
Spanning tree status         - enabled
Spanning tree instance       - 0
Designated Root MacAddr      - 00-e0-63-9d-c1-c8
Designated Root Priority     - 0
Designated Root Cost         - 10000
Designated Root Port         - lag.0.1
Root Max Age                 - 20 sec
Root Hello Time              - 2  sec
Root Forward Delay           - 15 sec
Bridge ID MAC Address        - 00-01-f4-da-5e-3d
Bridge ID Priority           - 32768
Bridge Max Age               - 20 sec
Bridge Hello Time            - 2  sec
Bridge Forward Delay         - 15 sec
Topology Change Count        - 7
Time Since Top Change        - 00 days 03:19:15
Max Hops                     - 20

 shows a detailed explanation of command output.

Spanning tree instance

Spanning Tree ID.

Spanning tree status

Whether Spanning Tree is enabled or disabled. 

Designated Root MacAddr

MAC address of the designated Spanning Tree root bridge.

Designated Root Port

Port through which the root bridge can be reached.

Designated Root Priority

Priority of the designated root bridge.

Designated Root Cost

Total path cost to reach the root.

Root Max Age

Amount of time (in seconds) a BPDU packet should be considered valid.

Root Hello Time

Interval (in seconds) at which the root device sends BPDU (Bridge Protocol 
Data Unit) packets. 

Root Forward Delay

Amount of time (in seconds) the root device spends in listening or learning 
mode.

Bridge ID MAC Address

Unique bridge MAC address, recognized by all bridges in the network.

Bridge ID Priority

Bridge priority, which is a default value, or is assigned using the set 
spantree priority command. For details, refer to “

Bridge Max Age

Maximum time (in seconds) the bridge can wait without receiving a 
configuration message (bridge “hello”) before attempting to reconfigure. 
This is a default value, or is assigned using the set spantree maxage 
command. For details, refer to “

” on page 6-19.

Bridge Hello Time

Amount of time (in seconds) the bridge sends BPDUs. This is a default 
value, or is assigned using the set spantree hello command. For details, 
refer to “