SMC Networks 100BASE-TX, 16 10BASE-T manual Configuring Spanning Tree per Port

3 Configuring the Switch

•Admin Link Type – The link type attached to this interface.

-Point-to-Point – A connection to exactly one other bridge.

-Shared – A connection to two or more bridges.

-Auto – The switch automatically determines if the interface is attached to a point-to-point link or to shared media. (This is the default setting.)

•Admin Edge Port (Fast Forwarding) – You can enable this option if an interface is attached to a LAN segment that is at the end of a bridged LAN or to an end node. Since end nodes cannot cause forwarding loops, they can pass directly through to the spanning tree forwarding state. Specifying Edge Ports provides quicker convergence for devices such as workstations or servers, retains the current forwarding database to reduce the amount of frame flooding required to rebuild address tables during reconfiguration events, does not cause the spanning tree to initiate reconfiguration when the interface changes state, and also overcomes other STA-related timeout problems. However, remember that Edge Port should only be enabled for ports connected to an end-node device. (Default: Disabled)

•Migration – If at any time the switch detects STP BPDUs, including Configuration or Topology Change Notification BPDUs, it will automatically set the selected interface to forced STP-compatible mode. However, you can also use the Protocol Migration button to manually re-check the appropriate BPDU format (RSTP or STP-compatible) to send on the selected interfaces. (Default: Disabled)

Web – Click Spanning Tree, STA, Port Configuration or Trunk Configuration. Modify the required attributes, then click Apply.

Figure 3-59. Configuring Spanning Tree per Port

CLI – This example sets STA attributes for port 7.

Console(config)#interface ethernet 1/7	4-104
Console(config-if)#spanning-tree port-priority 0	4-139
Console(config-if)#spanning-tree cost 50	4-138
Console(config-if)#spanning-tree link-type auto	4-141
Console(config-if)#no spanning-tree edge-port	4-140
Console(config-if)#

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