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Spanning Tree Information Menu Screen
Field Descriptions
Refer to
Table 7-9
for a functional description of each screen field.
Table 7-9 STA Port Information Screen Field Descriptions
Use this field...
Status
Forward Transitions
7-20
Device Control Menu Screens
To...
See the current state of this port within the Spanning Tree:
DISABLED – Port has been disabled by the user or has failed
diagnostics.
BLOCKING – Port receives STA configuration messages, but
does not forward packets.
LISTENING – Port will leave blocking state due to topology
change, starts transmitting configuration messages, but does not
yet forward packets.
LEARNING – Has transmitted configuration messages for an
interval set by the Forward Delay parameter without receiving
contradictory information. Port address table is cleared, and the
port begins learning addresses.
FORWARDING – The port forwards packets, and continues
learning addresses.
The rules defining port status are:
•
A port on a network segment with no other STA-compliant
bridging device is always forwarding.
•
If two ports of a module are connected to the same segment
and there is no other STA device attached to this segment, the
port with the smaller ID forwards packets and the other is
blocked.
•
All ports are blocked when the module is booted, then some of
them change state to listening, to learning, and then to
forwarding.
See the number of frames forwarded out the port.
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