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| Sun Ethernet Fabric Operating System ### STP Administration Guide

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## Configure a Portfast Port

This example configures port 0/1 as a port that has only hosts connected and can transition to forwarding rapidly.

1. Specify the interface for auto edge configuration and shut down the interface.

       SEFOS# configure terminal
       SEFOS(config)# interface extreme-ethernet 0/1
       SEFOS(config-if)# shutdown

2. Transition the port to forwarding rapidly and bring the interface up.

       SEFOS(config-if)# spanning-tree portfast
       SEFOS(config-if)# no shutdown
       SEFOS(config-if)# end

3. View the spanning tree properties of an interface.

       SEFOS# show spanning-tree detail

       Spanning tree Protocol Enabled.

       MST00 is executing the mstp compatible Multiple Spanning Tree Protocol
       Bridge Identifier has Priority 32768, Address 00:01:02:03:04:01
       Configured  Max age 20 sec,  Forward delay 15 sec
       Configured Hello Time 2 sec
       Dynamic Path Cost Disabled
       Flush Interval 0 centi-sec, Flush Invocations 72
       Flush Indication threshold 0
       Current Root has priority 32768, address 00:02:02:03:04:01cost of root path is 2000Number of Topology Changes 1, Time since topology Change 89 seconds agoTransmit Hold-Count 3Root Times : Max age 20 Sec Forward delay 15 SecPort 45 [Ex0/45] of MST00 is Root , ForwardingEx0/45 is operating in the MSTP ModePort path cost 2000, Port priority 128,Port Identifier 128.45. Port HelloTime 2,Timers: Hello - 1, Forward Delay - 0, Topology Change - 0Designated root has priority 32768, address 00:02:02:03:04:01

       Designated Bridge has priority 32768, address 00:02:02:03:04:01
       Designated Port Id is 128.45, Designated pathcost is 0Operational Forward delay 15, Max age 20Received Hello Time 2 SecNumber of Transitions to forwarding State : 1Auto-Edge is enabledPortFast is disabled, Oper-Edge is disabledLink type is point to PointBPDUs : sent 4, recieved 4466Restricted Role is disabled.Restricted TCN is disabled.bpdu-transmit enabledbpdu-receive enabledLoop Guard is disabled

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