Spanning Tree - STP
Spanning tree – View - STP Bridges
Microsemi PDS-408G Web Management User Guide Ver. 1.0.1, 03-2019
51
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 BPDUs 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 trees active topology because 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 BPDUs. Contrary to the
similar bridge setting, the port Edge status does not affect this 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.
8.4
Spanning tree – View - STP Bridges
This page provides a status overview of all STP bridge instances. The displayed table contains a row
for each STP bridge instance.
Figure 8-3: View STP Bridges
MSTI
- The Bridge Instance. This is also a link to the
STP Detailed Bridge Status
as described below.
Figure 8-4: View STP Detailed Bridge Status
8.4.1
STP Detailed Bridge Status
•
Bridge Instance
- The Bridge instance - CIST, MST1, ...