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STP-compatible mode. However, you can also use the
spanning-tree protocol-migration command at any time to
manually re-check the appropriate BPDU format to send on the
selected interfaces (i.e., RSTP or STP-compatible).
Example

spanning-tree link-type

Use this command to configure the link type for the Rapid
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.
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree protocol-migration
Console(config-if)#
b_mgmt.book Page 127 Tuesday, July 8, 2003 5:24 PM