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Command Descriptions
125
chosen as forwarding ports in favour of higher path cost ports. Valid values are in the
range 1 to 200000000.
Priority Controls the port priority. This can be used to control priority of ports having identical
port cost. (See above).
operEdge (state flag) Operational flag describing whether the port is connecting directly to edge devices.
(No Bridges attached). Transition to the forwarding state is faster for edge ports
(having operEdge true) than for other ports. The value of this flag is based on
AdminEdge and AutoEdge fields. This flag is displayed as Edge in Monitor-
>Spanning Tree -> STP Detailed Bridge Status.
AdminEdge
Controls whether the operEdge flag should start as set or cleared. (The initial
operEdge state when a port is initialized).
AutoEdge Controls whether the bridge should enable automatic edge detection on the bridge
port. This allows operEdge to be derived from whether BPDU's are received on the
port or not.
Restricted Role If enabled, causes the port not to be selected as Root Port for the CIST or any MSTI,
even if it has the best spanning tree priority vector. Such a port will be selected as an
Alternate Port after the Root Port has been selected. If set, it can cause lack of
spanning tree connectivity. It can be set by a network administrator to prevent
bridges external to a core region of the network influence the spanning tree active
topology, possibly because those bridges are not under the full control of the
administrator. This feature is also known as Root Guard.
Restricted TCN If enabled, causes the port not to propagate received topology change notifications
and topology changes to other ports. If set it can cause temporary loss of
connectivity after changes in a spanning tree's active topology as a result of
persistently incorrect learned station location information. It is set by a network
administrator to prevent bridges external to a core region of the network, causing
address flushing in that region, possibly because those bridges are not under the full
control of the administrator or the physical link state of the attached LANs transits
frequently.
BPDU Guard If enabled, causes the port to disable itself upon receiving valid BPDU's. Contrary to
the similar bridge setting, the port Edge status does not effect this setting.
A port entering error-disabled state due to this setting is subject to the bridge Port
Error Recovery setting as well.
Point-to-Point Controls whether the port connects to a point-to-point LAN rather than to a shared
medium. This can be automatically determined, or forced either true or false.
Transition to the forwarding state is faster for point-to-point LANs than for shared
media.
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