e/Dead Peer Detection

Information
has gloss	eng: Dead Peer Detection (DPD) is a method of detecting a dead Internet Key Exchange (IKE) peer. The method uses IPsec traffic patterns to minimize the number of messages required to confirm the availability of a peer. DPD is used to reclaim the lost resources in case a peer is found dead and it is also used to perform IKE peer failover.
lexicalization	eng: Dead Peer Detection
instance of	e/Cryptographic protocol