Layer 2,3,IPv6+QoS Switch
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Layer 2,3,IPv6+QoS Network Switch User Manual Version 0.1 Page: 750/970
11.2.2.17.2. Configuring Spanning Tree CST Configuration Page
Configurable Data
Bridge Priority - Specifies the bridge priority for the Common and Internal Spanning tree
(CST). The value lies between 0 and 61440. It is set in multiples of 4096. For example, if
you set the priority to any value between 0 and 4095, it will be set to 0. If it is tried to be set
to any value between 4096 and (2*4096-1) it will be set to 4096 and so on. The default
priority is 32768.
Bridge Max Age - Specifies the bridge max age for the Common and Internal Spanning
tree (CST). The value lies between 6 and 40, with the value being less than or equal to "2 *
(Bridge Forward Delay - 1)" and greater than or equal to "2 * (Bridge Hello Time + 1)". The
default value is 20.
Bridge Hello Time - Specifies the bridge hello time for the Common and Internal
Spanning tree (CST), with the value being less than or equal to "(Bridge Max Age / 2) - 1".
The default hello time value is 2.
Bridge Forward Delay- Specifies the time spent in "Listening and Learning" mode before
forwarding packets. Bridge Forward Delay must be greater or equal to "(Bridge Max Age /
2) + 1". The time range is from 4 seconds to 30 seconds. The default value is 15.
Spanning Tree Maximum Hops- Configure the maximum number of hops for the
Spanning tree.
Non-Configurable Data
Bridge identifier - The bridge identifier for the CST. It is made up using the bridge priority
and the base MAC address of the bridge.
Time since topology change - The time in seconds since the topology of the CST last
changed.
Topology change count - Number of times topology has changed for the CST.
Topology change - The value of the topology change parameter for the switch indicating
if a topology change is in progress on any port assigned to the CST. It takes a value if True
or False.
Designated root - The bridge identifier of the root bridge. It is made up from the bridge
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