H3C S7500 Series Ethernet Switches Command Manual

Command Manual – MSTP
H3C S7500 Series Ethernet Switches Chapter 1
MSTP Configuration Commands
1-6
Field Description
Revision level The revision level of the MST region
Instance Vlans Mapped VLAN-to-MSTI mappings in the MST region
1.1.5 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. A value of 0 specifies 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. VLANs with their IDs beyond this range (if the switch supports
this kind of VLAN IDs), such as VLAN 4095, VLAN 4096, can only be mapped to the
CIST (instance 0).
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 (instance 0). If you
specify no VLAN in the undo instance command, all VLANs mapped to the specified
MSTI are remapped to the CIST.
By default, all VLANs are mapped to the CIST.
VLAN-to-MSTI mappings are recorded in the VLAN mapping table of an MSTP switch.
So these two commands are actually used to manipulate the VLAN mapping table. You
can add/remove a VLAN to/from the VLAN 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-MSTI mapping is automatically removed if you map the VLAN to another
MSTI.
Related commands: region-name, revision-level, vlan-mapping modulo, check
region-configuration, active region-configuration.