# Redundancy Configuration

## Procedure

1. Right-click the Multi-processor WAN Application Module (MWAM) and then select Configure, or double-click the module.

2. Select MWAM module from the Category list.

3. Select a row and click Configure.

4. Select the category Redundancy Configuration.

The following information appears:

> Keep-alive Threshold (cRFCfgKeepaliveThresh)

> Keep-alive Timer (cRFCfgKeepaliveTimer)

> RF Notification Timer (cRFCfgNotifTimer)

> RF Action (cRFCfgAdminAction)

> Enable RF Notifications (cRFCfgNotifsEnabled)

> In Maintenance Mode (cRFCfgMaintenanceMode)

> Redundancy Mode (cRFCfgRedundancyMode)

> Redundancy Mode Description (cRFCfgRedundancyModeDescr)

> Operational Redundancy Mode (cRFCfgRedundancyOperMode)

### Keep-alive Threshold (cRFCfgKeepaliveThresh)

On platforms that support keep-alives, the keep-alive threshold value designates the number of lost keep-alives tolerated before a failure condition is declared. If this occurs, a SWACT notification is sent. On platforms that do not support keep-alives, this object has no purpose or effect.

### Keepalive Timer (cRFCfgKeepaliveTimer)

On platforms that support keepalives, the keepalive timer value is used to guard against lost keep-alives. The RF subsystem expects to receive a keep-alive within this period. If a keepalive is not received within this time period, a SWACT notification is sent. On platforms that do not support keepalives, this object has no purpose or effect.

### RF Notification Timer (cRFCfgNotifTimer)

The term 'notification' here refers to an RF notification and not an SNMP notification. As the standby unit progresses to the 'standbyHot' state, asynchronous messages are sent from the active unit to the standby unit must then be acknowledged by the standby unit. If the active unit receives the acknowledgement during the time period specified by this object, progression proceeds as normal. If the timer expires and an acknowledgement is not received by the active unit, a switch of activity occurs.

### RF Action (cRFCfgAdminAction)

This variable is set to invoke RF subsystem action commands. The commands are useful for maintenance and software upgrade activities.

### Enable RF Notifications (cRFCfgNotifsEnabled)

Allows enabling/disabling of RF subsystem notifications.

### In Maintenance Mode (cRFCfgMaintenanceMode)

Indicates whether redundant units may communicate synchronization messages with each other. If communication is not permitted, this object is set to 'true'. If communication is permitted, this object is set to 'false'. If the value of this object is 'true', the redundant system is considered to be in a maintenance mode of operation. If the value of this object is 'false', the redundant system is considered to be in a normal (non-maintenance) mode of operation.

In maintenance mode (true), the active unit will not communicate with the standby unit. The standby unit progression will not occur. When maintenance mode is disabled (false), the standby unit is reset to recover.

Maintenance mode (true) is useful for maintenance-type operations.

### Redundancy Mode (cRFCfgRedundancyMode)

Indicates the redundancy mode configured on the device.

### Redundancy Mode Description (cRFCfgRedundancyModeDescr)

Further clarifies or describes the redundancy mode indicated by cRFCfgRedundancyMode. Implementation-specific terminology associated with the current redundancy mode may be presented here.

### Operational Redundancy Mode (cRFCfgRedundancyOperMode)

Indicate the operational redundancy mode of the device.