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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, it 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 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 because those bridges are not under the full control of the
administrator. This feature is also known as Root Guard.
Restricted TCN:
If enabled, it 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 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, it 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 also subject to the bridge
Port Error Recovery setting.
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.
