Re: BGP Peers as basis of available routes

[Thilo Bangert <thilo.bangert () gmail com>]

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 () 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 () 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