Spanning Tree Root Information - Lenovo RackSwitch G8264CS Cli Command Reference

Spanning Tree Root Information
© Copyright Lenovo 2017
The following command displays information about the root bridge ID for every
spanning‐tree instance and the path cost associated to it:
show spanning­tree root
Command mode: All
Instance Root ID Path­Cost Hello MaxAge FwdDel Root Port
­­­­­­­­­­ ­­­­­­­­­­­­­­­­­­­­­­ ­­­­­­­­­ ­­­­­ ­­­­­­ ­­­­­­ ­­­­­­­­­
1 8001 08:17:f4:32:95:00 0 2 20 15 0
3 8003 08:17:f4:32:95:00 0 2 20 15 0
6 8001 08:17:f4:fb:d8:00 20000 2 20 15 27
17 8011 08:17:f4:32:95:00 0 2 20 15 0
Table 33.
Bridge Parameter Descriptions
Parameter Description
Instance Spanning Tree instance
Root ID Indicates the root switch bridge priority and MAC address.
Path‐Cost The port path cost is used to help determine the designated
port for a segment.
Hello The hello time parameter specifies, in seconds, how often the
bridge transmits a configuration bridge protocol data unit
(BPDU). Any bridge that is not the root bridge uses the root
bridge hello value.
MaxAge The maximum age parameter specifies, in seconds, the
maximum time the bridge waits without receiving a
configuration bridge protocol data unit before it reconfigure
the STP network.
FwdDel The forward delay parameter specifies, in seconds, the
amount of time that a bridge port has to wait before it
changes from discarding state to learning state and from
learning state to forwarding state.
Root Port The elected root port for the STP instance (port used to reach
the root switch).
Chapter 2: Information Commands
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