Instance - 3Com 8807 Command Reference Manual

176 C 13: MSTP C
HAPTER
n

instance

C
ONFIGURATION OMMANDS
Port Ethernet3/1/1
Port Ethernet3/1/9
---------- Stp Instance 0 tc or tcn detected count ----------
Port Ethernet3/1/1
Port Ethernet3/1/9
---------- Stp Instance 0 tc or tcn sent count ----------
Port Ethernet3/1/1
Port Ethernet3/1/9
The topology changes and notification information of Instance 0 will be recorded
in the log.
Syntax
instance instance-id vlan vlan-list
undo instance instance-id [ vlan vlan-list ]
View
MST region view
Parameter
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
Description
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.
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