Viewing A List Of Multiple Spanning Tree Instances; Adding A Multiple Spanning Tree Instance - Siemens RUGGEDCOM ROX II User Manual

Chapter 5
Setup and Configuration
Parameter
root-port-port
root-path-cost
total-top-changes
Section 5.36.6.2

Viewing a List of Multiple Spanning Tree Instances

To view a list of Multiple Spanning Tree Instances (MSTIs), type:
show running-config switch spanning-tree mstp-instance
If instances have been configured, a table or list similar to the following example appears:
ruggedcom# show running-config switch spanning-tree mstp-instance | tab
INSTANCE BRIDGE
ID PRIORITY
--------------------
1 32768
2 57344
!
If no MSTIs have been configured, add instances as needed. For more information, refer to
"Adding a Multiple Spanning Tree
Section 5.36.6.3

Adding a Multiple Spanning Tree Instance

To add a Multiple Spanning Tree Instance (MSTI), do the following:
NOTE
RUGGEDCOM ROX II supports up to 16 MSTIs.
1. Make sure the CLI is in Configuration mode.
IMPORTANT!
Since each MSTI acts as an independent RSTP instance, its configuration is similar to that of
RSTP. However, until one or more VLANs are mapped to an MSTI, an MSTI is considered to be
inactive.
2. Add the Multiple Spanning Tree Instance by typing:
532
Description
If the bridge is designated, this is the slot containing the port that provides connectivity
towards the root bridge of the network.
If the bridge is designated, this is the port of the slot that provides connectivity towards the
root bridge of the network.
The 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 a
cost of four, 100 Mbps ports will contribute 19 and 10 Mbps ports will contribute 100. For
the Common and Internal Spanning Tree (CIST) instance of the Multiple Spanning Tree
Protocol (MSTP), this is an external root path cost, which is the cost of the path from the
Internal Spanning Tree (IST) root (i.e. regional root) bridge to the Common Spanning Tree
(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.
Instance".
Section 5.36.6.3,
Viewing a List of Multiple Spanning Tree Instances
RUGGEDCOM ROX II
CLI User Guide