RuggedCom Welder RS400 用户手册

Spanning Tree 

 

 

ROS™  v3.5 

158 

RS400 

 

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.

 

 

 

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.

 

 

 

The configured Hello time from the Bridge RSTP Parameters menu.

 

 

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. 

 

 

The configured Forward Delay time from the Bridge RSTP Parameters menu.

 

 

 

The actual Forward Delay time provided by the root bridge as learned in configuration 
messages. This time is used in designated bridges.

 

 

 

The configured Maximum Age time from the Bridge RSTP Parameters menu.

 

 

 

The actual Maximum Age time provided by the root bridge as learned in configuration 
messages. This time is used in designated bridges. 

 

 

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.