nanog mailing list archives
Odd BGP AS Path
From: Heath Jones <hj1980 () gmail com>
Date: Wed, 22 Sep 2010 16:18:15 +0100
Hi all, Probably a silly question, but can anyone explain to me this: 3561 3356 9031 {35821,35821,35821,35821} i To explain it a bit better, I'm looking at real routing information from routeviews (#3). According to RFC 4271 (9.2.2.2 Aggregating Routing Information):
For the purpose of aggregating AS_PATH attributes, we model each AS within the AS_PATH attribute as a tuple <type, value>, where "type" identifies a type of the path segment the AS belongs to (e.g., AS_SEQUENCE, AS_SET), and "value" identifies the AS number. ... No tuple of type AS_SET with the same value SHALL appear more than once in the aggregated AS_PATH.
Am I misreading things, or is this path information out of spec? Cheers Heath
Current thread:
- Odd BGP AS Path Heath Jones (Sep 22)
- Re: Odd BGP AS Path Randy Bush (Sep 22)
- Re: Odd BGP AS Path Heath Jones (Sep 22)
- Re: Odd BGP AS Path Christopher Morrow (Sep 22)
- Re: Odd BGP AS Path Randy Bush (Sep 22)
- Re: Odd BGP AS Path Florian Weimer (Sep 22)
- Re: Odd BGP AS Path Randy Bush (Sep 22)
- Re: Odd BGP AS Path Warren Kumari (Sep 23)
- Re: Odd BGP AS Path Randy Bush (Sep 23)
- Re: Odd BGP AS Path Heath Jones (Sep 22)
- Re: Odd BGP AS Path Randy Bush (Sep 22)
- <Possible follow-ups>
- FW: Odd BGP AS Path Chris Hall (Sep 22)
- Re: FW: Odd BGP AS Path Christopher Morrow (Sep 22)