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Diameter : When a node sends transient failure as error code ?

+1 vote
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A Diameter node sends an error message in Answer message. It uses different error code based on the category it falls.
I am not able to understand about transient failure category.

posted Mar 28, 2016 by Vikram Singh

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3 Answers

+2 votes

One example: DIAMETER-OUT-OF-SPACE when a server (or any node) is out of memory or is unable to write to a socket due to flow control.

we have also seen some implementations sending DIAMETER-UNABLE-TO-COMPLY (5012) sometimes when an internal temporary error is encountered. Probably implementers were too lazy :)

answer Mar 28, 2016 by Rathnakumar Kayyar
+2 votes

Hi Vikram,

From RFC - 6733 section 7.1.4 describes ,Errors that fall within the transient failures category are used to inform a peer that the request could not be satisfied at the time it was received but MAY be able to satisfy the request in the future.

Below Errors are examples of Transient Failures
DIAMETER_AUTHENTICATION_REJECTED 4001
DIAMETER_OUT_OF_SPACE 4002
ELECTION_LOST 4003

Thanks

answer Mar 28, 2016 by Chinmoy Padhi
+1 vote

When a request received at a Diameter node can't be processed successfully for the time being, node responds to its peer with error code that comes under the category of transient failure. Chinmoy captured error codes that comes under the transient failure category.

Reference: https://tools.ietf.org/html/rfc3588

answer Mar 28, 2016 by Vimal Kumar Mishra
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