From: chwarren@xxxxxxx
Date: Wed Jul 03 2002 - 15:39:18 GMT-3
Private AS numbers are in the range of 64512 to 65535.
>
> From: Gy?ri Gabor <Gabor.Gyori@lnx.hu>
> Date: 2002/07/03 Wed AM 04:59:47 EDT
> To: "Ouellette, Tim" <tim.ouellette@eds.com>
> CC: <ccielab@groupstudy.com>
> Subject: RE: AS path inverse prepending ?
>
> > -----Original Message-----
> > From: Ouellette, Tim [mailto:tim.ouellette@eds.com]
> > Sent: Wednesday, July 03, 2002 4:51 AM
> > To: Gyuri Gabor
> > Cc: 'ccielab@groupstudy.com'
> > Subject: RE: AS path inverse prepending ?
> >
> >
> > What not just put the "network x.x.x.x" statement into R3 so
> > that it'll
> > generate the network itself?
>
> In this case one subnet of the network need to exist in the routing table of
> R3. It can be done only with static route or a secondary loopback, so we stea
l
> ip address from AS1 range. The other problem is that in this case the real
> EBGP update from AS1 is ignored, so thet net becomes unreachable from AS4 and
> AS3.
>
> >
> > or, another scenario is that you can put AS1 as a private AS
> > number and use
> > the "neighbor as4-router remote-as x remove-private-as" which
> > will remove
> > the private-as number from the update that went through r1 to
> > r2 to r3 and
> > the as-path attribute the the networkA when it gets to R4
> > will have r3's AS
> > number as the originator.
> >
>
> It is the solution I am looking for. The only thing I don't know, how to mark
> AS1 as private AS.
>
> Gabor
>
> >
> > -----Original Message-----
> > From: Gyori Gabor [mailto:Gabor.Gyori@lnx.hu]
> > Sent: Tuesday, July 02, 2002 9:59 AM
> > To: ccielab@groupstudy.com
> > Subject: AS path inverse prepending ?
> >
> >
> > Hi !
> >
> > Here is an othe problem:
> >
> > AS1 AS2 AS3 AS4
> > R1 ---- R2 --- R3 ---- R4
> >
> > R1 is advertising network A towards R4.
> > The task is to solve that AS4 see network A with AS path does
> > not contain
> > AS1.
> > Configuration has to be done on R3 with the least
> > configuration statements.
> >
> > Do You know any way to do it ?
> >
> > Gabor
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