RuggedCom RS400 Spanning Tree Root Port, Root Path Cost, Configured Hello Time, Learned Max Age

Spanning Tree

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.

ROS™ v3.5 158 RS400