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Clarification on sending CER on Open connection with SCTP association restart

+3 votes

I have a query/doubt on below section of RFC 6733: 1.1.3

Changes from RFC 3588:

" Deprecated the exchange of CER/CEA messages in the open state.

This feature was implied in the peer state machine table of RFC 3588, but it was not clearly defined anywhere else in that document."

Scenario: In case a diameter node using SCTP association and does a restart procedure according to RFC 4960, section Can the node (the one restarted the association) send CER on the association?

From the above RFC-6733 description it looks to me that the node which restart the association should not send CER, is my understanding correct? Please comment on this!

posted Sep 8, 2013 by Ahmed Patel

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I have a query on SCTP guidelines for Diameter base protocol specified in section 2.1.1 of RFC 6733 as :

"A Diameter agent SHOULD use dedicated payload protocol identifiers (PPIDs) for clear text and encrypted SCTP DATA chunks instead of only using the unspecified payload protocol identifier (value 0). For this purpose, two PPID values are allocated: the PPID value 46 is for Diameter messages in clear text SCTP DATA chunks, and the PPID value 47 is for Diameter messages in protected DTLS/SCTP DATA chunks."

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