SMC Networks TIGERSWITCH SMC6752AL2 Manual De Usuario

4-194

Interface Configuration (Ethernet, Port Channel)

• This command is used to enable/disable the fast spanning-tree mode 

for the selected port. In this mode, ports skip the Discarding and 
Learning states, and proceed straight to Forwarding. 

• Since end-nodes cannot cause forwarding loops, they can be passed 

through the spanning tree state changes more quickly than allowed by 
standard convergence time. Fast forwarding can achieve quicker 
convergence for end-node workstations and servers, and also 
overcome other STA related timeout problems. (Remember that fast 
forwarding should only be enabled for ports connected to a LAN 
segment that is at the end of a bridged LAN or for an end-node 
device.) 

• This command is the same as spanning-tree edge-port, and is only 

included for backward compatibility with earlier products. Note that 
this command may be removed for future software versions.

This command configures the link type for Rapid Spanning Tree. Use the 
no form to restore the default.

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.

Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree portfast
Console(config-if)#