Speaking as a regular ol' member This also matches a thought that I just sat down to write up.
Record the usual AS_PATH type in the signature attribute, meaning that the internally added AS_PATH elements get marked as AS_CONFED_SEQ and get stripped as such at the confed border, just as for current regular BGP. This is isomorphic to adding the confed marker on every internal peering, but simply reuses existing confed semantics. (Rather than "more faithfully mimics" :-) ) See also "reduce it to a problem that has already been solved." I found the use of pcount=0 as part of the protocol behavior to be a pity, so a way of getting around that is attractive. --Sandy ________________________________________ From: sidr-boun...@ietf.org [sidr-boun...@ietf.org] on behalf of John G. Scudder [j...@juniper.net] Sent: Friday, August 03, 2012 3:27 PM To: John G. Scudder Cc: Sriram, Kotikalapudi; sidr wg list Subject: Re: [sidr] bgpsec confeds bug, with fix On Aug 3, 2012, at 2:12 PM, "John G. Scudder" <j...@juniper.net> wrote: > One other option does occur to me however, and I'm not sure why I didn't > think of it before: for *every* crossing of a confederation member border, > set the flag, so it has the semantics of "this is a confederation hop" rather > than the current "entering a confederation" semantics. Then on exit, strip > all contiguous flagged hops. P. S. I prefer this to either of the other two suggestions I sent. It's less hacky than the pcount=0 option and more faithfully mimics the semantics of AS_CONFED_SEQ. --John _______________________________________________ sidr mailing list sidr@ietf.org https://www.ietf.org/mailman/listinfo/sidr _______________________________________________ sidr mailing list sidr@ietf.org https://www.ietf.org/mailman/listinfo/sidr
