Olicom CrossFire 8730, Reference Manual

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CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1 Monitoring the Network from the Statistics Menu
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When the switch is booted, all ports are blocked initially, and then some of
them change to a different state: listening, learning, and forwarding, in that
order. To see the change in states you must repeatedly exit from this menu, and
then select it again. All ports that are going to change states from blocking to
forwarding will have done so after two to three times the value of:
Switch Maximum Message Age + (2 x Switch Forward Delay)
DCst
Cost for a packet to travel from this port to the root in the current spanning-tree
configuration. The slower the media, the higher the cost.
Dsg SwId/BrId
Priority and MAC address of the device through which this port has determined it
must communicate with the root of the spanning tree.
Dsg PId
Port on the designated bridge through which this switch will communicate with the
root of the spanning tree. This information is useful if the switch is the designated
bridge on one or more network segments.
# Chgs
Number of topology changes, that is, the number of times the port has entered the
forwarding state plus the number of times the port has made the transition from
forwarding to blocking. The counter is reset when the switch is reset or the
spanning tree is turned on.
Last Chg
Time since the port last entered the forwarding state or made the transition from
forwarding to blocking.
You cannot change any information on this screen. To change the spanning tree
parameters, refer to the section “Spanning Tree for TrBRF Screen” on page 65.