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Overview

The

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 supports marking a peer connection as down based on the following configurable values:

  • Device Watchdog Timer
  • Device Watchdog Timer Answer Timeout

LSWU is not supported for these parameters.

Device Watchdog Timer

The

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 sends Device Watchdog Requests based on the configured Device Watchdog Timer value. Device Watchdog Timer is started once the transport connection towards a Diameter Peer is established. It is reset whenever any Diameter Message is received from the Diameter Peer. It can be a Device Watchdog Answer, some other Diameter Base Protocol Message, or any message from any of the Diameter Application (for example, Rx interface AAA messages).

  • After LSWU from a release that does not support Device Watchdog Timer, the parameter value is 30000.
  • After LSWU from a release that supports Device Watchdog Timer, the parameter value is retained.

Device Watchdog Timer Answer Timeout

The

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 considers a peer down, if a Device Watchdog Request is not replied by a Device Watchdog Answer before the  Device Watchdog Timer Answer Timeout timer expires. Device Watchdog Timer Answer Timeout is started once a Device Watchdog Request is sent.

After LSWU from a release that does not support Device Watchdog Timer Answer Timeout, the parameter value is 90000.

Message Flows

Device Watch Dog Timer-Current Behavior

Device Watch Dog Timer-Default Behavior on a Fresh Install

Device Watch Dog Timer-LSWU Behavior

For configuration, refer to:

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