Version 6.8 415 Mediant 2600 E-SBC
User's Manual 25. HA Configuration
25.4 Monitoring IP Entity and HA Switchover upon Ping
Failure
The device can monitor a specified network entity, using pings. If the device does not
receive a ping response from the entity, a switchover to the redundant device occurs. The
switchover happens only if a ping was initially successful and then a subsequent ping
failed. This feature can be used, for example, to check connectivity with a nearby router
(first hop) that the device uses to reach other destinations.
The network entity is defined by IP address. The IP interface from where the ping is sent
can be selected from one of the device's configured network interfaces (in the Interface
table).
Notes:
• The ping feature is not functional under the following conditions:
√ HA is disabled (i.e., active device is in standalone mode).
√ HA Priority is used (to prevent endless loops of switchovers).
√ Number of Ethernet Groups in the redundant device that are in
"up" state are less than on the active device (to prevent endless
loops of switchovers).
• For a detailed description of the HA ping parameters, see ''HA Ping Parameters''
on page 565.
To configure monitoring of IP entity using pings:
1. Open the HA Settings page (Configuration tab > System menu > HA Settings).
Figure 25-8: HA Settings Page - Monitor Destination Settings
2. Under the Monitor Destination Settings group, do the following:
• Set the 'HA Network Reachability' field to Enable.
• In the 'HA Network Reachability Destination Address' field, set the address of the
IP entity that you want to monitor.
• In the 'HA Network Reachability Source Iinterface Name' field, set the device's IP
network interface from where you want to ping the destination entity.
• In the 'HA Network Reachability Ping Timeout' field, set the timeout for which the
ping request waits for a response.
• In the 'HA Network Reachability Ping Retries' field, set the number of ping
requests that the device sends after no ping response is received from the
destination, before the destination is declared unavailable.
3. Click Submit.
If this feature is operational, the status of the connectivity to the pinged destination is
displayed in the read-only 'Monitor Destination Status' field:
“Enabled": Ping is sent as configured.
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