Microsens MS453522M - Manual (Page 104)

MICROSENS 8 Port Gigabit Ethernet Switch User’s Manual
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All bridges in the LAN will re-learn and determine which the root bridge is. Maximum
Age time is assigned by root bridge in unit of seconds. Default is 20 seconds.
Current Forward Delay:
Show the current root bridge forward delay time. The value of Forward Delay time is
set by root. The Forward Delay time is defined as the time spent from Listening state
moved to Learning state or from Learning state moved to Forwarding state of a port
in bridge.
Hello Time:
Show the current hello time of the root bridge. Hello time is a time interval specified
by root bridge, used to request all other bridges periodically sending hello message
every “hello time” seconds to the bridge attached to its designated port.
STP Topology Change Count:
STP Topology Change Count expresses the time spent in unit of seconds since the
beginning of the Spanning Tree Topology Change to the end of the STP convergence.
Once the STP change is converged, the Topology Change count will be reset to 0. The
figures showing in the screen may not be the exact time it spent but very close to,
because the time is eclipsing.
Time Since Last Topology Change:
Time Since Last Topology Change is the accumulated time in unit of seconds the STP
has been since the last STP Topology Change was made. When Topology Change is
initiated again, this counter will be reset to 0. And it will also count again once STP
topology Change is completed.
Fig. 3-45