3com 4210 PWR 9-Port 3CR17341-91-ME ユーザーズマニュアル
製品コード
3CR17341-91-ME
182
C
HAPTER
14: MSTP C
ONFIGURATION
■
Network topology changes are detected.
Configuration procedure
Configuration example
# Enable a switch to send trap messages conforming to 802.1d standard to the
network management device when the switch becomes the root bridge of
instance 1.
network management device when the switch becomes the root bridge of
instance 1.
<4210> system-view
[4210] stp instance 1 dot1d-trap newroot enable
Displaying and
Maintaining MSTP
Maintaining MSTP
You can verify the above configurations by executing the display commands in
any view.
any view.
Execute the reset command in user view to clear statistics about MSTP.
MSTP Configuration
Example
Example
Network requirements
Implement MSTP in the network shown in Figure 54 to enable packets of different
VLANs to be forwarded along different spanning tree instances. The detailed
configurations are as follows:
VLANs to be forwarded along different spanning tree instances. The detailed
configurations are as follows:
■
All switches in the network belong to the same MST region.
■
Packets of VLAN 10, VLAN 30, VLAN 40, and VLAN 20 are forwarded along
spanning tree instance 1, instance 3, instance 4, and instance 0 respectively.
spanning tree instance 1, instance 3, instance 4, and instance 0 respectively.
In this network, Switch A and Switch B operate on the convergence layer; Switch
C and Switch D operate on the access layer. VLAN 10 and VLAN 30 are limited in
the convergence layer and VLAN 40 is limited in the access layer. Switch A and
C and Switch D operate on the access layer. VLAN 10 and VLAN 30 are limited in
the convergence layer and VLAN 40 is limited in the access layer. Switch A and
Table 139 Enable trap messages conforming to 802.1d standard
Operation
Command
Description
Enter system view
system-view
-
Enable trap messages
conforming to 802.1d
standard in an instance
conforming to 802.1d
standard in an instance
stp [ instance instance-id ]
dot1d-trap [ newroot |
topologychange ] enable
dot1d-trap [ newroot |
topologychange ] enable
Required
Table 140 Display and maintain MSTP
Operation
Command
Display the state and statistics information
about spanning trees of the current device
about spanning trees of the current device
display stp [ instance instance-id ] [
interface interface-list | slot slot-number ] [
brief ]
interface interface-list | slot slot-number ] [
brief ]
Display region configuration
display stp region-configuration
Display information about the ports that are
shut down by STP protection
shut down by STP protection
display stp portdown
Display information about the ports that are
blocked by STP protection
blocked by STP protection
display stp abnormalport
Display information about the root port of the
instance where the switch reside
instance where the switch reside
display stp root
Clear statistics about MSTP
reset stp [ interface interface-list ]