3Com Switch 4210 9-Port, Configuration Manual

Page: 183 / 567

STP Maintenance Configuration 181
n
■
The rapid transition feature can be enabled on only root ports or alternate
ports.
■
If you configure the rapid transition feature on a designated port, the feature
does not take effect on the port.
STP Maintenance
Configuration
Introduction In a large-scale network with MSTP enabled, there may be many MSTP instances,
and so the status of a port may change frequently. In this case, maintenance
personnel may expect that log/trap information is output to the log host when
particular ports fail, so that they can check the status changes of those ports
through alarm information.
Enabling Log/Trap
Output for Ports of
MSTP Instance
Configuration Example # Enable log/trap output for the ports of instance 1.
<4210> system-view
[4210] stp instance 1 portlog
# Enable log/trap output for the ports of all instances.
<4210> system-view
[4210] stp portlog all
Enabling Trap
Messages Conforming
to 802.1d Standard
A switch sends trap messages conforming to 802.1d standard to the network
management device in the following two cases:
■
The switch becomes the root bridge of an instance.
Enter Ethernet port view interface interface-type
interface-number
-
Enable the rapid transition
feature stp no-agreement-check Required
By default, the rapid transition
feature is disabled on a port.
Table 137 Configure the rapid transition feature in Ethernet port view
Operation Command Description
Table 138 Enable log/trap output for ports of MSTP instance
Operation Command Description
Enter system view system-view -
Enable log/trap output for the
ports of a specified instance stp [ instance instance - id ]
portlog
Required
By default, log/trap output is
disabled for the ports of all
instances.
Enable log/trap output for the
ports of all instances stp portlog all Required
By default, log/trap output is
disabled for the ports of all
instances.