# Displaying MSTI Bridges

Use this procedure to view the MSTI Bridges information.

## Procedure steps

1. From the navigation tree, double-click VLAN.

2. From the VLAN tree, double-click Spanning Tree.

3. From the Spanning Tree folder, click MSTP.

4. Select the MSTI Bridges tab.

## Variable definitions

The following table outlines the parameters of the MSTI Bridges tab.

Table 1. MSTP MSTI Bridges tab parameters
Variable | Value
--- | ---
Instance | Specifies the Spanning Tree Instance to which the information belongs.
RegionalRoot | Specifies the MSTI Regional Root Identifier value for the Instance. This value is used as the MSTI Regional Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
Priority | Specifies the writable portion of the MSTI Bridge Identifier comprising the first two octets. The values that are set for Bridge Priority must be in steps of 4096.
RootCost | Specifies the cost of the path to the MSTI Regional Root as seen by this bridge.
RootPort | Specifies the number of the port which offers the lowest path cost from this bridge to the MSTI Region Root Bridge.
Enabled | Specifies whether the bridge instance is enabled or disabled.
TimeSinceTopology Change | Specifies the time (measured in hundredths of a second) since the TcWhile Timer for any port in this Bridge was non-zero for this Spanning Tree instance.
TopChanges | Specifies the number of times that at least one non-zero TcWhile Timer occurred on this Bridge for this Spanning Tree instance.
NewRootCount | Specifies the number of times this Bridge has detected a Root Bridge change for this Spanning Tree instance. A Trap is generated on the occurrence of this event.
InstanceUpCount | Specifies the number of times a new Spanning Tree instance was created. A Trap is generated on the occurrence of this event.
InstanceDownCount | Specifies the number of times a Spanning Tree instance was deleted. A Trap is generated on the occurrence of this event.