Planet IGSW-2840 User Manual page 547

Related Commands
spanning-tree edge-port
spanning-tree link-type
This command configures the link type for Rapid Spanning Tree and Multiple Spanning Tree. Use the no form to restore the
default.
Syntax
spanning-tree link-type {auto | point-to-point | shared} no spanning-tree link-type
auto -Automatically derived from the duplex mode setting.
point-to-point - Point-to-point link.
shared - Shared medium.
Default Setting
auto
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
Specify a point-to-point link if the interface can only be connected to exactly one other bridge, or a shared link if it can be
connected to two or more bridges.
When automatic detection is selected, the switch derives the link type from the duplex mode. A full-duplex interface is
considered a point-to-point link, while a half-duplex interface is assumed to be on a shared link.
RSTP only works on point-to-point links between two bridges. If you designate a port as a shared link, RSTP is forbidden.
Since MSTP is an extension of RSTP, this same restriction applies.
Example
Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree link-type point-to-point
Console(config-if)#
spanning-tree mst cost
This command configures the path cost on a spanning instance in the Multiple Spanning Tree. Use the no form to restore the
default.
Syntax
spanning-tree mst instance_id cost cost no spanning-tree mst instance_id cost
instance_id - Instance identifier of the spanning tree.
(Range: 0-4094, no leading zeroes)
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User's Manual of IGSW-2840