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Re: [saag] Re:

At 10:53 AM 5/25/02 -0400, RJ Atkinson wrote:
>Hmm.  I would rather say that RSVP is hop-by-hop and
>that (normally) AH/ESP are end-to-end.

In terms of addressing, RSVP is end-to-end in one
direction (sender->receiver) and hop-by-hop in the
other (receiver->sender).

>However, if one used (for example) AH with an asymmetric algorithm,
>one could perform hop-by-hop authentication of the
>packet with AH.  This has obvious computational cost
>issues so might not be the best choice.

The packet payload is going to be modified at each hop,
as well, in both directions.

Melinda