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HA Media Interface Keepalive Configuration
You turn the HA media interface keepalive on by setting a timeout value for the standby to receive responses to its ARP requests before it assumes the active role in the HA node. Keeping this parameter set to 0, its default, disables the keepalive
To enable the HA media interface keepalive:
In Superuser mode, type
configure terminal and press Enter.
If you are adding this feature to an existing configuration, then you will need to select the configuration you want to edit.
media-if-peercheck-time—Enter the amount of time in milliseconds for the standby system in an HA node to receive responses to its ARP requests via the media interface before it takes over the active role from its counterpart.
The default is 0, which turns the HA media interface keepalive off. The maximum value is 500 milliseconds.