- DL manuals
- 3Com
- Switch
- S7902E
- Command Reference Manual
3Com S7902E Command Reference Manual - page 449
1-38
You cannot map the same VLAN to different MSTIs. If you map a VLAN that has been mapped to an
MSTI to a new MSTI, the old mapping will be automatically removed.
By using the
vlan-mapping modulo
command, you can quickly specify a VLAN for each MSTI. This
command maps each VLAN to the MSTI whose ID is (VLAN ID–1) %
modulo
+ 1, where (VLAN ID-1)
%
modulo
is the modulo operation for (VLAN ID–1). If the modulo value is 15, for example, then VLAN 1
will be mapped to MSTI 1, VLAN 2 to MSTI 2, VLAN 15 to MSTI 15, VLAN 16 to MSTI 1, and so on.
Related commands:
region-name
,
revision-level
,
check region-configuration
,
active
region-configuration
.
Examples
# Map VLANs to MSTIs as per modulo 8.
[Sysname] stp region-configuration
[Sysname-mst-region] vlan-mapping modulo 8