Thanks, Jeff. One more clarification request: What do you mean when you say "first non-sequence AS"? Example: AS path : ASN3 ASN2 ASN1 [ASN25, ASN26] AGGREGATOR: AS1 Here [ASN25, ASN26] is the AS_SET. I this example, what is the first non-sequence AS? You may use a different example if needed.
Sriram ________________________________________ From: Jeffrey Haas [[email protected]] Sent: Thursday, July 29, 2010 5:19 AM To: Sriram, Kotikalapudi Cc: Randy Bush; Jeffrey Haas; [email protected] Subject: Re: [sidr] Comment about aggregators and AS_SETs Sriram, On Thu, Jul 29, 2010 at 04:14:46AM -0400, Sriram, Kotikalapudi wrote: > We need not look inside the AS_SET, and also we would require no ROAs for the > AS_SET. > Simply take the AS to the immediate left of the AS_SET to be the origin. > The update/RIB data establish clearly that the ASN in that AS position indeed > matches the AGGREGATOR ASN (wherever it matters for the validation algorithm). > However, the algorithm should not take the AGGREGATOR to be the origin Part of my suggestion is that the first non-sequence AS should only be used *if and only if* the aggregator AS matches. This would be in addition to only considering the AS left of an AS_SET when there are no sequences as the right-most segment type. -- Jeff _______________________________________________ sidr mailing list [email protected] https://www.ietf.org/mailman/listinfo/sidr
