I have reviewed this document as part of the Operational directorate's ongoing







effort to review all IETF documents being processed by the IESG.  These comments








were written primarily for the benefit of the operational area directors. 








Document editors and WG chairs should treat these comments just like any other








last call comments.




 




I think the draft has described very clearly the new authentication sequence number mechanism.





A few minor suggestions and questions:




-

         


Section 4 OSPF packet key selection:







o

  


 is this “Key” same as the “Ko” defined by RFC5709? If yes, should add the reference.








o

  


Is this “Key” same as the "Key ID" in Figure 1?




 




-

         


 Section 6:








o

  


There are three “keys”: Authentication Key, cryptographic Key, and Protocol-Specific Authentication Key (Ks). Which one is used in the Key ID field of
 Figure 1? 







o

  


 




 




Cheers, 




 




Linda Dunbar