3com 8807 Guia De Referência

Use the undo 
vlan-mappin

g modulo command to disable the function.

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

Related command: region-name, revision-level, check region-configuration, 
active region-configuration

# Map VLAN to MSTI based on modulo 16.

<SW8800>system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800]stp region-configuration

 

[3Com-mst-region] vlan-mapping modulo 16