Dell PowerConnect 3248 Manuel - Page 33

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Link Type — The link type attached to this interface. (Default: Auto)

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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.

Edge Port — You can enable this option if an interface is attached to a

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LAN segment that is at the end of a bridged LAN or to an end node.

Because 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

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Does not cause the Spanning Tree to initiate reconfiguration when

the interface changes state,

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Overcomes other STP-related timeout problems.

Edge Port should only be enabled for ports connected to an end-node

device.

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Migration — Re-checks the appropriate BPDU format to send on the

selected interface. If, at any time, the switch detects STP BPDUs,

including Configuration or Topology Change Notification BPDUs, it

automatically sets the selected interface to forced STP-compatible

mode. You can also check this Migration check box to manually re-

check the appropriate BPDU format (RSTP or STP-compatible) to

send on the selected interfaces.

Addendum to the 3 248 and 52 24 User 's Guides