# GGSN Quota Server Error Statistics

## Navigation

1. Right-click the device, and select Monitor. The Monitor Device dialog box appears.

2. Select GGSN Quota Server Error Statistics from the Category list.

The following information appears:

> Negative Response from CSG (cGgsnSAQsRcvdNegativeResponses)

> Pending response from CSG (cGgsnSAQsRequestsUnreplied)

> Improper Sequence (cGgsnSAQsSeqnumFailures)

> Dropped Messages (cGgsnSAQsDroppedMsgs)

> Unknown Messages in QS (cGgsnSAQsUnknownMsgs)

> Unknown Responses (cGgsnSAQsUnknownResponses)

> IE Error (cGgsnSAQsIEErrorMsgs)

### Negative Response from CSG (cGgsnSAQsRcvdNegativeResponses)

The number of negative responses received from the Content Service Gateway (CSG). The Content Service Gateway sends a negative GTP acknowledgement and the failure cause code in the quota push response.

### Pending Response from CSG (cGgsnSAQsRequestsUnreplied)

The number of pending requests that are waiting for a response from the Content Service Gateway.

### Improper Sequence (cGgsnSAQsSeqnumFailures)

The number of messages received without proper sequence number. The quota server uses different pools of sequence numbers for quota management and path management messages. To manage these sequence numbers, the quota server utilizes the service of sequence number manager. For quota management messages, the sequence numbers start from 1, increases till 65535, and then wraps around.

### Dropped Messages (cGgsnSAQsDroppedMsgs)

The number of dropped messages. The quota server verifies the GTP header content before queuing an inbound message to the quota server process. If any field is bad, the quota server drops the message before queuing.

### Unknown Messages in QS (cGgsnSAQsUnknownMsgs)

The number of unknown messages in the quota server.

### Unknown Responses (cGgsnSAQsUnknownResponses)

The number of unknown responses received by the quota server.

### IE Error (cGgsnSAQsIEErrorMsgs)

The number of messages received with an IE error.