3Com MSR 30, MSR 50 manual Stp port-log

618CHAPTER 38: MSTP CONFIGURATION COMMANDS

Parameters auto: Specifies MSTP detects automatically whether the current port connects to a point-to-point link.

force-false: Specifies the current port to connect to a non-point-to-point link.

force-true: Specifies the current port to connect to a point-to-point link.

Description Use the stp point-to-pointcommand to specify whether the current port connects to a point-to-point link.

Use the undo stp point-to-pointcommand to restore the default status of the link connected with the current port.

The default setting is auto; namely the MSTP-compliant device automatically detects whether an Ethernet port connects to a point-to-point link.

Configured in Ethernet interface view, the setting is effective on the current port only.

Note that:

■Configured in Ethernet interface view, the setting is effective on the current port only; configured in port group view, the setting is effective on all the ports in the port group.

■When connecting to a non-point-to-point link, a port is incapable of rapid state transition.

■If the current port is the master port of aggregated ports or if it works in full duplex mode, the link to which the current port connects is a point-to-point link. We recommend that you use the default setting, namely let MSTP detect the link status automatically.

■This setting is effective to the CIST and all MST instances. If a port is configured as connecting to a point-to-point link or a non-point-to-point link, the setting takes effect for the port in all MST instances. If the physical link to which the port connects is not a point-to-point link and you force it to be a point-to-point link by configuration, your configuration may incur a temporary loop.

Examples # Configure port Ethernet 1/3 as connecting to a point-to-point link.

<Sysname> system-view

[Sysname] interface Ethernet 1/3

[Sysname-Ethernet1/3] stp point-to-point force-true

stp port-log

Syntax stp port-log { all instance instance-id}

undo stp port-log { all instance instance-id}

View System view

Parameters all: Enables output of port state transition information for all instances.