[routing-wg] BGP Best Path data from different RIS

As I see it, RRCs collect best path views from each of its peers. (TBH, I
didn't check if BGP sessions from RRC to its peers are multipath enabled,
but a quick check on several data points showed only one as path per peer).
So all entries that you receive with that RIPEstat resource query are best
paths. Just that they are best paths for the RRC's peer ASN in that
location.

You shouldn't care what would be the RRC's best path algorithm result since
it is not forwarding and no customers behind it's ASN.

Hope the thoughts help :)

-- -- --
BR,
Vainius Dangovas


On Sun, Mar 19, 2023 at 6:53 PM Ehsan Ghazizadeh <ehsan.ccsp at gmail.com>
wrote:

> Yeah exactly, ripe stat returns all paths to that specific prefix not the
> best path, (its multipath in bgp perspective). I need to know which as-path
> is being chosen from different location of Europe and America to my asn,
> it's for tshoot purposes. We are a cloud provider and sometimes bgp changes
> cause performance issues (it can happen only to some of prefixes and can't
> be easily discovered by our monitoring system), I want to be informed about
> bgp path changes before customers sense its affect. I currently have
> bgpalerter.
>
> On Sun, Mar 19, 2023, 7:01 PM Vainius Dangovas <Vainius.Dangovas at smn.lt>
> wrote:
>
>> Hi, Ehsan,
>>
>>
>>
>> Have You tried RIPEstat?
>>
>> I guess this data would be useful for Your use:
>> https://stat.ripe.net/data/looking-glass/data.json?resource=1.1.1.0/24
>>
>> As I understand RRCs get updates only about the best path (from the RRC
>> peer’s point of view) about the prefix in question.
>>
>>
>>
>> This call is also used in https://stat.ripe.net/app/launchpad/
>>
>>
>>
>> Pagarbiai / Best regards,
>>
>> *Vainius Dangovas*
>>
>> Mobile: +370 680 80876
>>
>> vainius.dangovas at smn.lt
>>
>>
>>
>>
>>
>> *From: *routing-wg <routing-wg-bounces at ripe.net> on behalf of Ehsan
>> Ghazizadeh <ehsan.ccsp at gmail.com>
>> *Date: *2023 March 19, Sunday 09:20
>> *To: *routing-wg <routing-wg at ripe.net>
>> *Subject: *[routing-wg] BGP Best Path data from different RIS
>>
>>
>>
>> Hi everyone
>>
>>
>>
>> I'm trying to write a python script to fetch bgp best path data for my
>> prefixes from different locations. Apparently ripe stat only returns the
>> full routing table not the best path, also connecting via telnet to
>> routeviews routers and parsing bgp commands output is not an ideal method,
>> so I was wondering is there any other method to achieve this (preferably
>> using api)?
>>
>>
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