RUGGEDCOM ROS
User Guide
Chapter 5
Setup and Configuration
Viewing Statistics for Port MSTIs
161
Parameter
Description
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.
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.
Section 5.3.9.2
Viewing Statistics for Port MSTIs
To view statistics for port MSTIs, navigate to
Spanning Tree
»
View Port MSTI Statistics
. The
Port MSTI
Statistics
form appears.
2
1
Figure 102: Port MSTI Statistics Form
1.
Port(s)
2.
Status
3.
Role
4.
Cost
5.
Designated Bridge ID
This table displays the following information:
Parameter
Description
Port(s)
Synopsis:
Any combination of numbers valid for this parameter
The port number as seen on the front plate silkscreen of the switch (or a list of ports, if
aggregated in a port trunk).
Status
Synopsis:
{ Disabled, Listening, Learning, Forwarding, Blocking, Link Down, Discarding }
tatus of this port in Spanning Tree. This may be one of the following: