[routing-wg] New on RIPE Labs: BGP Even-More Specifics in 2017

Hi all,

Sorry for the delay, I was on vacation,

AS3333 was/is still announcing all the prefixes to the Falcon RS.
They were in the RIB of the RS. The prefixes that did not have valid
route objects were then either filtered or tagged with communities by
the RS, depending on the other RS participants session configs.

In addition, the number of users of the Falcon route servers is much
less than the legacy route servers - today, the Falcon RS3 has ~160
established v4 BGP peers, compared to ~700 on the legacy RS1.

So, a combination of the new RS filtering the prefixes that do not have
route objects, and the prefixes (even the IRR-valid ones) being
advertised to a much smaller set of peers, caused the drop in reachibility.

Cheers,
Colin



On 11/07/2017 17:12, Stephen D. Strowes wrote:
> Colin has most insight here, since he did the legwork to spot precisely
> what changed on those dates.
> 
> S.
> 
> 
> 
> On 11/07/2017 04:33, Randy Bush wrote:
>> as i said in the comment,
>>
>> Nice work!  When AS3333 stopped propagating longer prefixes due to
>> switch to AMSIX Falcon RS, was it the RS, lack of RPKI, ...?
>>
>> randy
>>
> 
> 

-- 
Colin Petrie
Systems Engineer
RIPE NCC