Configuring An Mst Region - HP A5830 Configuration Manual
Layer 2 lan switching
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Also See for A5830:
- Configuration manual (280 pages) ,
- Command reference manual (249 pages) ,
- Configuration manual (207 pages)
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In STP-compatible or RSTP mode, do not specify any MSTI or VLAN. Otherwise, the spanning tree
configuration is ineffective.
In MSTP mode, if you specify an MSTI, the spanning tree configuration is effective for the specified
MSTI. If you specify a VLAN list, the spanning tree configuration is ineffective. If you do not specify
any MSTI or VLAN, the spanning tree configuration is effective for the CIST.
In PVST mode, if you specify a VLAN list, the spanning tree configuration is effective for the
specified VLANs. If you do not specify any VLAN, the spanning tree configuration is ineffective.
Configuring an MST region
To configure an MST region:
Step...
1.
Enter system view
2.
Enter MST region view
3.
Configure the MST
region name
4.
Configure the VLAN-to-
instance mapping table
5.
Configure the MSTP
revision level of the MST
region
6.
Display the MST region
configurations that are
not activated yet
7.
Activate MST region
configuration manually
8.
Display the activated
configuration information
of the MST region
Two or more spanning tree devices belong to the same MST region only if they are configured to have the
same format selector (0 by default, not configurable), MST region name, MST region revision level, and
the same VLAN-to-instance mapping entries in the MST region, and they are connected via a physical
link.
The configuration of MST region–related parameters, especially the VLAN-to-instance mapping table, will
result in a new spanning tree calculation. To reduce the possibility of topology instability, the MST region
configuration only takes effect after you activate it by using the active region-configuration command, or
enable a spanning tree protocol by using the stp enable command in the case that the spanning tree
protocol is disabled.
The device in PVST mode automatically maps VLANs to MSTIs, and supports more MSTIs than in MSTP
mode. When you change the spanning tree mode from PVST to MSTP, exceeding VLAN-to-instance
mappings (arranged in ascending order of MSTI IDs) are silently deleted and cannot be recovered even if
Command...
system-view
stp region-configuration
region-name name
instance instance-id vlan vlan-list
vlan-mapping modulo modulo
revision-level level
check region-configuration
active region-configuration
display stp region-configuration
[ | { begin | exclude | include }
regular-expression ]
64
Remarks
—
—
Optional
The MST region name is the MAC
address by default
Optional
Use either command
All VLANs in an MST region are
mapped to the CIST (or MSTI 0) by
default
Optional
0 by default
Optional
Required
Optional
Available in any view
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