Reference Guide

debug spanning-tree
Enables STP debug and displays protocol information.
Syntax
debug spanning-tree {all | bpdu [tx | rx] | events}
Parameters
• all — Debugs all spanning tree operations.
• bpdu — Enter transmit (tx) or receive (rx) to enable the debug direction.
• events — Debugs PVST events.
Default Not congured
Command Mode EXEC
Usage Information None
Example
OS10# debug spanning-tree bpdu rx
Supported Releases 10.2.0E or later
instance
Congures MST instances and one or multiple VLANs mapped to the MST instance.
Syntax
instance instance-number {vlan vlan-range}
Parameters
• instance — Enter an MST instance value (0 to 63).
• vlan range — Enter a VLAN range value (1 to 4093).
Default Not congured
Command Mode MULTIPLE-SPANNING-TREE
Usage Information By default, all VLANs map to MST instance zero (0) unless you are using the vlan range command to map the
VLANs to a non-zero instance. The no version of this command removes all the instance related conguration.
Example
OS10(conf-mst)# instance 1 vlan 2-10
OS10(conf-mst)# instance 2 vlan 11-20
OS10(conf-mst)# instance 3 vlan 21-30
Supported Releases 10.2.0E or later
name
Assigns a name to the MST region.
Syntax
name region-name
Parameters region-name — Enter a name for an MST region (up to 32 characters).
Default System MAC address
Command Mode MULTIPLE-SPANNING-TREE
204 Layer 2