Enterasys Networks 9034313-07 manual ‐1 shows a detailed explanation of command output

show spantree stats

Mode

Switch command, read‐only.

Example

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

C3(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	days 03:19:15
Time Since Top Change		- 00
Max Hops		- 20

Table 9‐1 shows a detailed explanation of command output.

Table 9-1 show spantree Output Details

Output	What It Displays...
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 “set spantree priority” on
	page 9-17.
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 “set spantree maxage” on page 9-19.

9-6 Spanning Tree Configuration