The alive test allows you to check the reachability of IPv4 addresses using ping. If no response is received or if connectivity is restored after being unreachable, the device can perform a configurable action.
In LANconfig, configure the Alive Test under .
- Target IP address 1-4
- Up to four possible target IPv4 addresses to which the device sends a ping. Only one address needs to be reachable for the Alive Test to be considered successful.
- Test interval
-
The time interval in seconds at which the device sends a ping to the target addresses. If the ping is not answered, the device
optionally sends a defined number of retries at specified intervals. With this configuration, the device forms "series" of
ping attempts. Only if all these pings are unanswered is the entire series considered unsuccessful.
Note: The product of fail limit and test interval defines the total time that elapses before a restart or the execution of the action.Note: Choose the test interval to be greater than the product of retry interval and retry count to ensure the desired retries can be performed within the test interval.
- Retry count
-
This value specifies how often the device retries a failed ping to the target address.
Note: Choose this value so that the product of retry interval and retry count is smaller than the chosen test interval to ensure the desired retries can be performed within the test interval.
- Retry interval
-
This value specifies the time interval in which the device retries a failed ping to the target address. If the retry interval
is set to 0, the device does not send any retries.
Note: Choose this value so that the product of retry interval and retry count is smaller than the chosen test interval to ensure the desired retries can be performed within the test interval.
- Fail limit for reaction
-
This parameter defines the number of consecutive failed test series before the device restarts or executes the configured
action.
Note: The product of this value and the test interval defines the total time that elapses before a restart or the execution of the action.
- Source address (opt.)
- Assign an optional source address (name of an ARF network, named loopback address, or IP address) to be used for the Alive Test.
- Reaction
-
The action performed by the device if the ping to the target address fails.
- Cold boot
- The device performs a cold boot.
- Warm boot (Default)
- The device performs a warm boot.
- User-defined command
- The device executes a configurable action. Configure this command below.
- User-defined command
-
Enter the action to be performed by the device if the target addresses are unreachable. Any console-executable command can be
specified as an action.
Note: This action is only executed if Reaction is set to User-defined command.
- Reestablish user-defined command
-
Any console-executable command can be specified as a recovery action. This is executed once when the device transitions from
the error state of unreachable target addresses to a state where the configured target address is reachable again.
Note: This action is only executed if Reaction is set to User-defined command.
