Configuring a Protected Instance
Context
Interfaces can be added to a SEP segment only after the SEP segment is configured with protected instances.
Procedure
- Run:
system-viewThe system view is displayed.
- (Optional) Create and configure the mapping
between MSTIs and VLANs.
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NOTE: If the stp mode vbst command sets the STP working mode to VBST, you must perform this step to configure the mapping between MSTIs and VLANs. Otherwise, the protected instance in a SEP segment cannot be configured.
Run:
stp region-configurationThe MST region view is displayed.
Run:
instance instance-id vlan vlan-id
The mapping between MSTIs and VLANs is created and configured.
By default, all VLANs map to MSTI 0.
Run:
active region-configurationThe mapping between MSTIs and VLANs is activated.
Run:
quitExit from the MST region view.
- Run:
sep segment segment-id
A SEP segment is created and the view of the SEP segment is displayed.
- Run:
protected-instance { all | { instance-id1 [ to instance-id2 ] } &<1-10> }
A protected instance is configured in a SEP segment.
When the mapping between MSTIs and VLANs is configured, instance-id in this step must be the same as instance-id in the instance command.
By default, no protected instance is configured in a SEP segment.
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NOTE: When the mapping between MSTIs and VLANs is not configured, the SEP protected instance is valid for all VLANs.
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