AS PATH limits

Mon Oct 2 07:53:59 UTC 2017

Its also happily announced onwards, e.g. by Telia:

Oct  2 07:25:09:E:BGP: From Peer ... received Long AS_PATH= AS_SEQ(2) 
1299 174 262206 262206 262197 262197 262197 262197 262197 262197 262197 
262197 262197 262197 262197 262197 262197 262197 262197 262197 262197 
262197 262197 262197 262197 262197 262197 262197 262197 262197 ... 
attribute length (567) More than configured MAXAS-LIMIT 64

On 30 Sep 2017, at 17:09, sthaug at nethelp.no wrote:

>> If you're on cogent, since 22:30 UTC yesterday or so this has been 
>> happening
>> (or happened).
>
> Still happening here. I count 562 prepends (563 * 262197) in the
> advertisement we receive from Cogent. I see no good reason why we
> should accept that many prepends.
>
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no