Redundancy
190
7.5
Spanning Tree
RM Web
Release
6.0
07/2010
Parameter Meaning Possible Values Default
Setting
Column
„Root“
Information on the device that is currently
the root bridge
Bridge ID The Bridge ID of the current root bridge.
The format is
ppppp / mm mm mm mm mm mm,
with: ppppp: priority (decimal) and mm: the
respective byte of the MAC address (hexadecimal).
Priority The Priority of the current root bridge. 0 ≤ n*4096 ≤
61440
32768
Hello Time The Hello Time of the current root bridge. 1 - 2 2
Forward
Delay
The Forward Delay of the current root bridge. 4 - 30 s 30 s
Max Age The Max Age of the current root bridge. 6 - 40 s 20 s
Table 82: Global Spanning Tree settings, root bridge information
Parameter Meaning Value range
Column „Topology“ Spanning Tree topology information
Bridge is root If the local device is currently the root bridge,
the device displays this box as selected. If
the device is not the root bridge, it is
displayed as empty.
Selected, not
selected.
Root Port The port of the device from which the current
path leads to the root bridge. 0: the local
bridge is the root.
Valid port ID or 0.
Root path costs Path costs from the root port of the device to
the current root bridge of the entire layer 2
network. 0: the local bridge is the root.
0-200,000,000
Topology changes Counts how often the device has put a port
into the Forwarding status via Spanning
Tree since it was started.
Time since last change Time since the last topology change.
Table 83: Global Spanning Tree settings, topology information
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