RE: Gen-ART LC review of draft-ietf-lisp-lcaf-16

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Dino,

	Thanks for considering my comments.

	On the basis that each RTR RLOC can be from a different address family, than I would say that the number of RTRs cannot be determined from the LCAF Length field.  The length alone would not tell you the breakdown of RTR RLOCs between the address families, so the only way to tell how many RTR RLOCs are present is to parse through them until the length of the AFI/address combinations seen equals the Length value.  For example, 3 IPv4 RTR RLOCs will have the same length (3 x (2 + 4)) as one IPv6 RTR RLOC (2 + 16).  I'd simply strike the relevant sentence in the RTR RLOC definition (2nd to last sentence).

		Kind regards,
		-Peter

-----Original Message-----
From: Dino Farinacci [mailto:farinacci@xxxxxxxxx] 
Sent: Wednesday, October 12, 2016 12:28 PM
To: Peter Yee; suresh.krishnan@xxxxxxxxxxxx
Cc: draft-ietf-lisp-lcaf@xxxxxxxx; gen-art@xxxxxxxx; ietf@xxxxxxxx
Subject: Re: Gen-ART LC review of draft-ietf-lisp-lcaf-16

I am sending one reply to both commenters. Thanks Peter and Suresh for your comments. 

I made changes for all of Suresh’s comments. I made changes for all of Peter’s comments accept for the responses below. Note many of your comments were fixed in a later draft.

I have submitted a -17 version. See diff file enclosed.

> Page 13, RTR RLOC Address definition, 4th sentence: The ability to 
> determine

> the number of RTRs encoded by the value of LCAF length implies a 
> single value for AFI = x is required.  If so, why not only use one 
> AFI=x value rather than repeating it for each address?  And if there 
> can be different AFI = x value, then the number of RTRs that are 
> encoded cannot be determined without parsing through each AFI/address pair.

Because each RTR can be from a different address family.

Thanks again,
Dino






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