# AAA Server Availability

The AAA Server Availability provides details on the current status of the server.

## Procedure

1. Right-click the device, then select AAA.

2. Select a row of the Server Configuration Table, then click Server Availability.

The following information appears:

> Current State (casState)

> Current State Duration (casCurrentStateDuration)

> Previous State Duration (casPreviousStateDuration)

> Total Dead Time (casTotalDeadTime)

> Dead State Count (casDeadCount)

### Current State (casState)

Current state of server.

up(1) represents server responding to requests.

dead(2) means server failed to respond.

A server is marked dead when it does not respond after maximum retransmissions.

A server is marked up either after a waiting period or when some response is received.

Initial value of casState is 'up(1)' at system reinitialization. It transitions to 'dead(2)' when an attempt to communicate fails.

### Current State Duration (casCurrentStateDuration)

Time elapsed since server reached its current state, as shown in casState.

### Previous State Duration (casPreviousStateDuration)

Time elapsed since server reached its previous state prior to the most recent transition of casState.

This value is zero if the server has not changed state.

### Total Dead Time (casTotalDeadTime)

Time elapsed since casState value of server reached dead(2) although system was not reinitialized.

### Dead State Count (casDeadCount)

Number of times casState value of server transitioned to dead(2) since system reinitialization.