3com 8807 Reference Guide

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MSTP Configuration Commands
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Use the undo stp interface no-agreement-check command to disable port fast 
transition.
By default, port fast transition is disabled.
Related command: stp no-agreement-check.
You can configure fast transition only on a root port or an alternate port.
Example
# Enable fast transition on GigabitEthernet1/1/1.
<SW8800> system-view
 
System View: return to User View with Ctrl+Z.
 
[SW8800]stp interface GigabitEthernet1/1/1 no-agreement-check 
stp interface 
point-to-point
Syntax
stp interface interface-list point-to-point { force-true | force-false | auto }
undo stp interface interface-list point-to-point
View
System view
Parameter
interface-list: Ethernet port list, containing multiple Ethernet ports and expressed 
as interface-list = { interface-type interface-number [ to interface-type 
interface-number
 ] }&<1-10>. For detail descriptions of interface-type and 
interface-number parameters, refer to the corresponding descriptions in Port 
Command Manual
. &<1-10> means that the preceding parameters can be 
entered up to 10 times.
force-true: Indicates the Ethernet port connected to a point-to-point link.
force-false: Indicates the Ethernet port not connected to a point-to-point link.
auto: Configures to automatically check if the link to the Ethernet port is a 
point-to-point link.
Description
Use the stp interface point-to-point command to configure a port (not) to be 
connected to a point-to-point link in system view.
Use the undo stp interface point-to-point command to restore the default state 
of the link to the Ethernet port.
By default, the parameter defaults to auto, that is, MSTP checks if the link to the 
Ethernet port is a point-to-point link.
The port not connected with the point-to-point link cannot transit fast.
The master ports of the link aggregation and the ports operating in full-duplex 
mode are connected to the point-to-point link. You are recommended to keep the 
default settings and let MSTP detect the link state automatically.