RuggedCom RS400 用户手册

 

 

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RS400 

163 

ROS™  v3.5 

 

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. 

 

 

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.