3Com 7757 Configuration Manual page 247

Table 171 Root bridge configuration
Operation
Bridge priority
configuration
MSTP operation mode
configuration
Maximum hops of MST
region configuration
Network diameter
configuration
MSTP time-related
configuration
Timeout time factor
configuration
Maximum transmitting
speed configuration
Edge port
configuration
Point-to-point link
related configuration
n
In a network that contains switches with both GVRP and MSTP employed, GVRP
packets are forwarded along the CIST. If you want to broadcast packets of a
specific VLAN through GVRP, be sure to map the VLAN to the CIST when
configuring the MSTP VLAN mapping table (The CIST of a network is the spanning
tree instance numbered 0.)
Prerequisites The status of the switches in the spanning trees are determined. That is, the status
(root, branch, or leaf) of each switch in each spanning tree instance is determined.
MST Region Configuration procedure
Configuration
Table 172 Configure an MST region
Operation
Enter system view
Enter MST region view stp region-configuration
Configure a name for
the MST region
Configure the VALN
mapping table for the
MST region
Remarks
Optional
The priority of a switch cannot be
changed after the switch is specified
as the root bridge or a secondary
root bridge.
Optional
Optional
Optional
The default is recommended.
Optional
The defaults are recommended.
Optional
Optional
The default is recommended.
Optional
Optional
Command
system-view
region-name name
instance instance-id vlan
vlan-list
vlan-mapping modulo modulo
Root Bridge Configuration
Related section
"Bridge Priority
Configuration" on page 250
"MSTP Operation Mode
Configuration" on page 250
"MST Region Maximum Hops
Configuration" on page 251
"Network Diameter
Configuration" on page 252
"MSTP Time-related
Configuration" on page 252
"Timeout Time Factor
Configuration" on page 254
"Maximum Transmitting
Speed Configuration" on page
254
"Edge Port Configuration" on
page 255
"Point-to-point Link-Related
Configuration" on page 256
Description
-
-
Required
The default MST region name of
a switch is its MAC address.
Required
Both commands can be used to
configure VLAN mapping tables.
By default, all VLANs in an MST
region are mapped to spanning
tree instance 0.
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