You send several /24 routes, your upstream :
- 1st choice: upstream doing atomic agregation
- 2nd: upstream insert into IGP->.....IGP->BGP with auto-summary thats
default->at ATT You see class B net.
By the way the ASpath is right?
suaveguru wrote:
>
> thanks , but can you be more precise who does
> auto-summmary and injecting routes into IGP my
> customer or his customer or my upstream providers
>
> regards,
>
> suaveguru
> --- Ilya Mazhara <[EMAIL PROTECTED]> wrote:
> > Hmmm.. Looks like somobody inject this routes into
> > IGP
> > and does auto-summary at him exiting router.
> >
> > suaveguru wrote:
> > >
> > > hi all,
> > > I have a question regarding announcement of routes
> > via
> > > BGP.
> > >
> > > Well we are an INTERNET BACKBONE FOR our customers
> > who
> > > are ISPs .
> > >
> > > As a result we have many upstream providers like
> > AT&T
> > > , ABOVENET etc.
> > >
> > > Recently our customers just have this new network
> > > blocks namely 146.222.185.0 /24, 146.222.186.0 /24
> > and
> > > 146.222.195.0 /24
> > >
> > > At our side we have confirmed annoucing them
> > >
> > > At our upstream providers we have also confirmed
> > that
> > > they are announcing them
> > >
> > > but when I go to AT&T route server to do a bgp of
> > > these networks they seem to only recognise the
> > > supernet
> > >
> > > as show below
> > > route-server.ip.att.net> sh ip bgp 146.222.185.0
> > >
> > > BGP routing table entry for 146.222.0.0/16,
> > version
> > > 13292503
> > > Paths: (18 available, best #14)
> > > Not advertised to any peer
> > > 7018 174 12018, (received & used)
> > > 12.123.29.249 from 12.123.29.249
> > (12.123.29.249)
> > > Origin IGP, localpref 100, valid, external
> > > Community: 0:5000
> > >
> > > ...
> > >
> > > AT&T sees the /16 supernet and not the specific
> > that I
> > > am sending you
> > >
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