3Com Switch 4500 Family Manual page 230

interface-list: Ethernet port list. You can specify multiple Ethernet ports by providing this argument in the
form of interface-list = { interface-type interface-number [ to interface-type interface-number ] } &<1-10>,
where &<1-10> means that you can provide up to 10 port indexes/port index ranges for this argument.
Description
Use the stp point-to-point command to specify whether the link connected to the current Ethernet
port is a point-to-point link. Use the undo stp point-to-point command to restore the link
connected to the current Ethernet port to its default link type, which is automatically determined by
MSTP.
Use the stp interface point-to-point command to specify whether the links connected to the
specified Ethernet ports are point-to-point links in system view. Use the undo stp interface
point-to-point command to restore the links connected to the specified ports to their default link
types, which are automatically determined by MSTP.
The default setting is auto; namely the MSTP-enabled device automatically detects whether a port
connects to a point-to-point link.
If no keyword is specified in the stp point-to-point command, the auto keyword is used by default, and
so MSTP automatically determines the type of the link connected to the current port.
The rapid transition feature is not applicable to ports on non-point-to-point links.
If an Ethernet port is the master port of aggregation ports or operates in full-duplex mode, the link
connected to the port is a point-to-point link. You are recommended to let MSTP automatically
determine the link types of ports.
The two commands only apply to CISTs and MSTIs. If you configure the link to which a port is
connected is a point-to-point link (or a non-point-to-point link), the configuration applies to all MSTIs
(that is, the port is configured to connect to a point-to-point link (or a non-point-to-point link) in all MSTIs).
If the actual physical link is not a point-to-point link and you configure the link to which the port is
connected to be a point-to-point link, temporary loops may occur.
Examples
# Configure the link connected to Ethernet 1/0/1 as a point-to-point link.
Configure the link connected to Ethernet 1/0/1 as a point-to-point link in Ethernet port view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] stp point-to-point force-true
Configure the link connected to Ethernet 1/0/1 as a point-to-point link in system view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp interface Ethernet 1/0/1 point-to-point force-true
# Configure the links connected to Ethernet 1/0/2 to Ethernet 1/0/4 as point-to-point links in system
view.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp interface Ethernet 1/0/2 to Ethernet 1/0/4 point-to-point force-true
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