Connection termination

The SR OS may initiate termination of the peering connection because of the following reasons:

• peer shutdown

  This refers to graceful termination by initiating a Disconnect Peer Request (DPR) message from either side of the connection.

• watchdog timeouts

  The peer is unresponsive and consequently the TCP connection is forcefully closed.

• message authorization failure during the Capability Exchange phase with the peer

  There is no support for common application or hostnames mismatch.

• failure to verify the following AVPs in incoming Diameter Base messages

  • CEA: Origin-Host

  • DWR: Origin-Host, Origin-Realm, Origin-State-Id

  • DWA: Origin-Host, Origin-Realm, Origin-State-Id

  • DPR: Origin-Host, Origin-Realm

  • DPA: Origin-Host, Origin-Realm

  These values of these AVPs are checked against:

  • Origin-Host: peer name configuration

  • Origin-Realm: learned from CEA

  • Origin-State-Id: learned the first time seen in either CEA, DWR, DWA