Actually, it sounds like their address space was registered in
RADB with there origin being there Telco ISP.
The traceroute you used (probably prtraceroute) looks up
addresses in RADB to determine there origin AS.
So, to Dan West, you are not misunderstanding the purpose
of the AS number in BGP, but I think you are
misinterpreting the meaning of the AS number you see in that
traceroute gateway.
Take an address and check it in RADB and you'll see
whois -h whois.radb.net x.y.z.0
Patrick
--
Patrick Morin
Network Analyst, RISQ
> Sounds like you guys were doing IBGP...
>
> -B
> "Dan West" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > My former employer (an ISP) had BGP peering with our
> > upstream provider(Telco). As I understand it so far,
> > BGP4 is used to advertise routes between autonomous
> > systems. One day I ran a web-based traceroute to my
> > old haunt and it showed them having the same
> > autonomous system number as our bandwidth provider.
> > Were we unnecessarily using BGP? I don't understand
> > why our telco and we (the ISP) had the same AS number.
> >
> >
> > Am I misunderstanding the purpose of the AS number in
> > BGP?
> >
> > Many thanks.
> >
> ___________________________________
> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> FAQ, list archives, and subscription info: http://www.groupstudy.com
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
