Planet WGSW-14020 User Manual page 31

Root Path Cost
Configuration Changes The total number of topology changes detected by this bridge
Last Topology Change The time (in a second) since the last time a topology change
Configuration
Parameter
Usage
Priority (1~65535)
Hello Time (1~10sec)
Maximum Age (6~40sec)
Forward Delay (4~30sec)
The cost of the path to the root device as seen from this bridge
since the management entity was last reset or initialized
was detected by the bridge entity
Description
Enable/Disable this switch to join in/withdraw from a STA
compliant network
Priority is a decisive key for selecting root device, root
port, and designated port. The smaller number, the higher
priority. The device with the highest priority becomes the
STA root device. However, if all devices have the same
priority, the device with the lowest MAC address will
become the root device
The amount of time between the transmission of
Configuration bridge PDUs by this node on any port when
it is the root of the spanning tree or trying to become so, in
units of a second. This is the actual value that this bridge
is currently using
The maximum age of Spanning Tree Protocol information
learned from the network on any port before it is
discarded, in units of a second. This is the actual value
that this bridge is currently using
This time value, measured in units of a second, controls
how fast a port changes its spanning state when moving
towards the Forwarding state. The value determines how
long the port stays in each of the Listening and Learning
states, which precede the Forwarding state. This value is
also used, when a topology change has been detected
and is underway, to age all dynamic entries in the
Forwarding Database
- 28 -