Telechat Review of draft-ietf-xmpp-6122bis-23

Request Review of draft-ietf-xmpp-6122bis
Requested rev. no specific revision (document currently at 24)
Type Telechat Review
Team General Area Review Team (Gen-ART) (genart)
Deadline 2015-06-09
Requested 2015-06-04
Authors Peter Saint-Andre
Draft last updated 2015-07-06
Completed reviews Genart Last Call review of -22 by Dan Romascanu (diff)
Genart Telechat review of -23 by Dan Romascanu (diff)
Assignment Reviewer Dan Romascanu
State Completed
Review review-ietf-xmpp-6122bis-23-genart-telechat-romascanu-2015-07-06
Reviewed rev. 23 (document currently at 24)
Review result Ready with Issues
Review completed: 2015-07-06


I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at




Please resolve these comments along with any other Last Call comments you may receive.



Reviewer: Dan Romascanu

Review Date: 5/27/15

IETF LC End Date: 6/3/15

IESG Telechat date: 




Ready with one issue which I believe is worth discussing.


Major issues:


I have a concern about backwards compatibility and migration. In the migration between 6122 and 6122bis deployments it is possible that previously-valid JIDs might no longer be valid or previously-invalid JIDs become valid. Because of
 this the Introduction says that operators of XMPP services are advised to perform careful testing before migrating accounts and other data.


In a dialog with Peter Saint-Andre (document author) I asked if  there are any recommendations that could be made to the application designers and operators respectively to ease the migration?


His answer pointed to section 6 (actually I think that 6.1 applies) in in draft-ietf-precis-saslprepbis. I believe that a pointer to that section in a ‘migration / backwards compatibility’ section would be useful for the application
 designers. What about the operators, however? Can more details about what operator should test to ensure compatible migration of users and applications be provided  beyond what is mentioned in the introduction?


Minor issues:


Nits/editorial comments: