364 Spanning-Tree Commands
spanning-tree link-type
The spanning-tree link-type Interface Configuration mode command overrides the default link-type
setting determined by the duplex mode of the port and enables Rapid Spanning Tree Protocol (RSTP)
transitions to the forwarding state. Use the no form of this command to return to the default
configuration.
Syntax
•
spanning-tree link-type
{
point-to-point
|
shared
}
• no spanning-tree link-type
•
point-to-point
— Indicates that the port link type is point-to-point.
•
shared
— Indicates that the port link type is shared.
Default Configuration
The device derives the port link type from the duplex mode. A full-duplex port is considered a point-to-
point link and a half-duplex port is considered a shared link.
Command Mode
Interface Configuration (Ethernet, port-channel) mode.
User Guidelines
There are no user guidelines for this command.
Example
The following example enables shared spanning-tree on Ethernet port 1/e5.
spanning-tree pathcost method
The spanning-tree pathcost method Global Configuration mode command sets the default path cost
method. Use the no form of this command to return to the default configuration.
Syntax
•
spanning-tree pathcost method
{
long
|
short
}
•
no spanning-tree pathcost method
•
long —
Specifies port path costs with a range of 1-200,000,000
.
•
short
— Specifies port path costs with a range of 0-65,535.
Console(config)# interface ethernet 1/e15
Console(config-if)# spanning-tree link-type shared
book.book Page 364 Thursday, December 18, 2008 7:40 PM
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