BGP Peers as basis of available routes

Thilo Bangert thilo.bangert at gmail.com
Wed Oct 19 03:03:51 CDT 2011


On Wednesday, October 19, 2011 09:35:04 AM Nathanael C. Cariaga wrote:
> Ok. Thanks for the information :)  So that would mean that to answer my
> question, I would need to determine the web hosting provider who has the
> most number of peers and most number of transit providers?
> 

what i found usefull is to check the autnum objects in whois, as many document 
their peerings and transits there.

robtex has also some of this info, in a webinterface...

also helpful was peeringdb - you can lookup indvidual ASs without logging in 
like this

http://as<asnumber>.peeringdb.com/

it may give you an indication as to which exchanges your (potential) provider 
is present at - though not all providers have a / maintain their peeringdb 
record.

HTH
kind regards
Thilo

> -nathan
> 
> On 10/19/2011 3:20 PM, Raymond Dijkxhoorn wrote:
> > Hi!
> > 
> > You wont see those local peerings unless all those providers have looking
> > glasses. So thats not gonna work out in this case. You will only see who
> > they transit with...
> > 
> > Thanks,
> > Raymond Dijkxhoorn, Prolocation
> > 
> > Op 19 okt. 2011 om 09:21 heeft "Nathanael C. 
Cariaga"<nccariaga at stluke.com.ph>  het volgende geschreven:
> >> Hi.
> >> 
> >> Thanks for the prompt response.  Actually our requirement is to find a
> >> webhosting provider whose routes are widely advertised locally and
> >> regionally.  This is why I thought of using bgp as a basis studying the
> >> availability of routes of the hosting provider.
> >> 
> >> 
> >> -nathan
> >> 
> >> On 10/19/2011 3:00 PM, Raymond Dijkxhoorn wrote:
> >>> Hi!
> >>> 
> >>> Dont mix up peering and transit connections!
> >>> 
> >>> That you dont see that route on a lookingglass doesnt mean much. Only
> >>> Could tell you they dont transit there.
> >>> 
> >>> Its all depending what you definiëren with available routes.
> >>> 
> >>> If i peer with all ISP's in a specific area and your looking glass isnt
> >>> licated there does that mean its bad? You need to know much more. If
> >>> your customers are local there its even prefered.
> >>> 
> >>> Its never that black/white ...its depending on your needs!
> >>> 
> >>> Thanks,
> >>> Raymond Dijkxhoorn, Prolocation
> >>> 
> >>> Op 19 okt. 2011 om 08:46 heeft "Nathanael C. 
Cariaga"<nccariaga at stluke.com.ph>   het volgende geschreven:
> >>>> Hi!
> >>>> 
> >>>> We're currently evaluating web hosting providers in the APAC region
> >>>> and one of the criteria that we are currently considering is the
> >>>> availability of routes going to the web hosting provider.
> >>>> 
> >>>> In this regard,  I would like to ask for your idea regarding this.  Is
> >>>> it safe to conclude that the web hosting provider's available routes
> >>>> would would depend on the peers who are advertising their AS /
> >>>> network?  (i.e if web hosting provider claims that they are peering
> >>>> with telco a, b, c but as seen from a third party looking glass, only
> >>>> C is seen advertising the web hosting provider network that would
> >>>> mean web hosting provider is effectively utilizing c as their
> >>>> upstream??)
> >>>> 
> >>>> Thanks.
> >>>> 
> >>>> 
> >>>> --
> >>>> -nathan



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