3com MSR 20-20 참조 매뉴얼

C

HAPTER

 38: MSTP C

ONFIGURATION

 C

OMMANDS

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.

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

Use the undo stp point-to-point command 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.

# 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 { all | instance instance-id }

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

System view

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