Instance; Region-Name - 3Com 5500-EI PWR Reference Manual

instance

Syntax
instance instance-id vlan vlan-list
undo instance instance-id [ vlan vlan-list ]
View
MST region view
Parameters
instance-id: ID of an MSTI ranging from 0 to 16. The value of 0 refers to the CIST.
vlan-list: List of VLANs. You need to provide this argument in the form of vlan-list = { vlan-id [ to
vlan-id ] }&<1-10>, where &<1-10> means that you can provide up to 10 VLAN IDs/VLAN ID ranges for
this argument. Normally, a VLAN ID can be a number ranging from 1 to 4094.
Description
Use the instance command to map specified VLANs to a specified MSTI.
Use the undo instance command to remove the mappings from the specified VLANs to the specified
MSTI and remap the specified VLANs to the CIST (MSTI 0). If you specify no VLAN in the undo
instance command, all VLANs that are mapped to the specified MSTI are remapped to the CIST.
By default, all VLANs are mapped to the CIST.
VLAN-to-instance mappings are recorded in the VLAN-to-instance mapping table of an MSTP-enabled
switch. So these two commands are actually used to manipulate the VLAN-to-instance mapping table.
You can add/remove a VLAN to/from the VLAN-to-instance mapping table of a specific MSTI by using
these two commands.
Note that a VLAN cannot be mapped to multiple MSTIs at the same time. A VLAN-to-instance mapping
is automatically removed if you map the VLAN to another MSTI.
Related commands:
region-configuration, active region-configuration.
Examples
# Map VLAN 2 to MSTI 1.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp region-configuration
[Sysname-mst-region] instance 1 vlan 2

region-name

Syntax
region-name name
undo region-name
View
MST region view
region-name, revision-level,
1-11
vlan-mapping modulo, check