# GGSN Redundancy Statistics Contd

1. Right-click on the MWAM Card and select Configure.

2. Select category MWAM module.

3. Select a row and click the Statistics button.

4. Select category GGSN Redundancy Statistics Contd.

The following information appears:

> Charging Gateway Ready (cGgsnCGFReadyMessages)

> Charging Gateway State Change (cGgsnCGFModifyMessages )

> Charging Gateway Removal (cGgsnCGFRemoveMessages)

> GGSN to GSN/CGF (cGgsnInternalStateMsgs)

> CAC Failure (cGgsnSlbCacFailures)

> Session Failures (cGgsnSlbSessionFailures )

### Charging Gateway Ready (cGgsnCGFReadyMessages)

Charging information is sent from a GGSN to the charging gateway. GTP protocol is used between them. This object consists of the total number of CGF ready messages.

Trigger Condition: The counter is incremented when a CGF ready message is checkpointed to standby.

### Charging Gateway State Change (cGgsnCGFModifyMessages )

Significant information related to change in state of CGF must be checkpointed to GGSN. This object indicates the total number of CGF modify messages received.

Trigger condition: This counter is triggered when there is a change in CGF state.

### Charging Gateway Removal (cGgsnCGFRemoveMessages)

Counts all the messages responsible for CGF removal.

Trigger Condition: This counter is triggered when context is deleted.

### GGSN to GSN/CGF (cGgsnInternalStateMsgs)

GGSN sends certain information to other GSNs (SGSN) and CGF. On failover, this information must remain consistent. The information includes the following: information element recovery count sent to the other GSNs for path management, local record sequence number and charging ID, and so on.

Trigger Condition: The counter is incremented for each of these kinds of messages.

### CAC Failure (cGgsnSlbCacFailures)

Tracks the number of CAC Failure notifications sent to SLB.

Trigger Condition: The counter is incremented whenever GGSN sends a CAC failure notification to SLB.

### Session Failures (cGgsnSlbSessionFailures )

Tracks the number of session failure notifications sent to SLB.

Trigger Condition: The counter is incremented whenever GGSN sends a session failure notification to SLB.