Stp Interface Edged-Port - 3Com 7750 Series Command Reference Manual

3Com Switch 7750 Series
Command Reference Guide – MSTP
Description
Use the stp interface cost command to set the path cost(s) of the specified port(s) in a
specified spanning tree instance in system view.
Use the undo stp interface cost command to revert to the default path cost(s) of the
specified port(s) in the specified spanning tree instance in system view.
By default, a switch automatically calculates the path costs of a port in different
spanning tree instances based on a specified standard.
If you specify the instance-id argument to be 0 or do not specify this argument, the stp
interface cost command sets the path cost(s) of the specified port(s) in the CIST.
The path costs of a port in spanning tree instances affect the roles of the ports in the
spanning tree instances. By configuring different path costs for the same port in
different MSTIs, you can make flows of different VLANs traveling along different
physical links, so as to achieve VLAN-based load balancing. Changing the path cost of
a port in a spanning tree instance may change the role of the port in the instance and
put it in state transition.
The default port path cost differs with port speed. Refer to Table 1-4 for details.
Related command: stp cost.
Example
# Set the path cost of Ethernet1/0/3 port in spanning tree instance 2 to 400 in system
view.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] stp instance 2 interface Ethernet 1/0/3 cost 400

1.1.18 stp interface edged-port

Syntax
stp interface interface-list edged-port { enable | disable }
undo stp interface interface-list edged-port
View
System view
Parameter
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.
enable: Configures the specified Ethernet ports to be edge ports.
Chapter 1 MSTP Configuration Commands
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