3com 8807 Reference Guide

C

HAPTER

 13: MSTP C

ONFIGURATION

 C

OMMANDS

 Port Ethernet3/1/1              0

 

 Port Ethernet3/1/9              1

 

 ---------- Stp Instance 0 tc or tcn detected count ----------

 

 Port Ethernet3/1/1              1

 

 Port Ethernet3/1/9              0

 

 ---------- Stp Instance 0 tc or tcn sent count ----------

 

 Port Ethernet3/1/1              1

 

 Port Ethernet3/1/9              0      

n 

instance instance-id vlan vlan-list

undo instance instance-id [ vlan vlan-list ]

MST region view

instance-id: Specifies the spanning tree instance ID, ranging from 0 to 48. The 
value 0 indicates a CIST.

vlan vlan-list: Specifies the VLAN list, ranging from 1 to 4094. vlan-list = { vlan-id [ 
to vlan-id ] }&<1-10>. Where, &<1-10> represents that you can input vlan-ids up 
to 10 times

Use the instance command to map the specified VLAN list to the specified MSTI.

Use the undo instance command to cancel the specified VLAN list from the 
specified MSTI, and the removed VLAN will then be mapped to the CIST (i.e., the 
Instance 0). If no VLAN is specified in the undo command, all the VLANs 
associated with the specified MSTI will be mapped to CIST.

By default, all the VLANs are mapped to CIST, i.e., the Instance 0.

MSTP describes the association between VLANs and MSTIs with the VLAN 
mapping table. You can use this command to configure this table. Every VLAN can 
be mapped to an MSTI as per your configuration.

You cannot map one VLAN to different instances, while you can map multiple 
VLANs to one instance. When you remap the mapped VLAN to a different 
instance, the original mapping relation is removed automatically. The mapping 
relationship of VLANs and instances in the same MSTP domain must be correct. 
The data will be transmitted according to the spanning tree topology structure of 
the instance the VLAN maps to.

Related command: region-name, revision-level, check region-configuration, 
vlan-mapping modulo, active region-configuration.