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ROS™ v3.5 158 RS400
Root Port
Synopsis: 0 to 65535 or { <empty string>}
If the bridge is designated, this is the port that provides connectivity towards the root bridge of
the network.
Root Path Cost
Synopsis: 0 to 4294967295
Total cost of the path to the root bridge, composed of the sum of the costs of each link in the
path. If custom costs have not been configured. 1Gbps ports will contribute 4, 100 Mbps ports
will contribute 19 and 10 Mbps ports will contribute a cost of 100 to this figure.
For the CIST instance of MSTP, this is an external root path cost, which is the cost of the path
from the IST root (i.e. regional root) bridge to the CST root (i.e. network "global" root) bridge.
Configured Hello Time
Synopsis: 0 to 65535
The configured Hello time from the Bridge RSTP Parameters menu.
Learned Hello Time
Synopsis: 0 to 65535
The actual Hello time provided by the root bridge as learned in configuration messages. This
time is used in designated bridges.
Configured Forward Delay
Synopsis: 0 to 65535
The configured Forward Delay time from the Bridge RSTP Parameters menu.
Learned Forward Delay
Synopsis: 0 to 65535
The actual Forward Delay time provided by the root bridge as learned in configuration
messages. This time is used in designated bridges.
Configured Max Age
Synopsis: 0 to 65535
The configured Maximum Age time from the Bridge RSTP Parameters menu.
Learned Max Age
Synopsis: 0 to 65535
The actual Maximum Age time provided by the root bridge as learned in configuration
messages. This time is used in designated bridges.
Total Topology Changes
Synopsis: 0 to 65535
A count of topology changes in the network, as detected on this bridge through link failures or
as signaled from other bridges. Excessively high or rapidly increasing counts signal network
problems.