# Graphing CIST Port statistics

Use this procedure to display CIST Port statistics

## 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 CIST Port tab.

5. Select a port and click Graph to get the statistics for the CIST Port.

## Variable definitions

The following table outlines the parameters of the CIST Port tab.

Table 1. CIST Port Graph dialog box parameters
Variable | Value
--- | ---
ForwardTransitions | Displays the number of times this port transitioned to the Forwarding State.
RxMstBpduCount | Displays the number of MST BPDUs received on this port.
RxRstBpduCount | Displays the number of RST BPDUs received on this port.
RxConfigBpduCount | Displays the number of Configuration BPDUs received on this port.
RxTcnBpduCount | Displays the number of TCN BPDUs received on this port.
TxMstBpduCount | Displays the number of MST BPDUs transmitted from this port.
TxRstBpduCount | Displays the number of RST BPDUs transmitted from this port.
TxConfigBpduCount | Displays the number of Configuration BPDUs transmitted from this port.
TxTcnBpduCount | Displays the number of TCN BPDUs transmitted from this port.
InvalidMstBpduRxCount | Displays the number of Invalid MST BPDUs received on this port.
InvalidRstBpduRxCount | Displays the number of Invalid RST BPDUs received on this port.
InvalidConfigBpdu RxCount | Displays the number of Invalid Configuration BPDUs received on this port.
InvalidTcnBpduRxCount | Displays the number of Invalid TCN BPDUs received on this port.
ProtocolMigrationCount | Displays the number of times this port has migrated from one STP protocol version to another. The relevant migration protocols are STP-COMPATIBLE and RSTP/MSTP. A trap is generated when the port migrates.