From: Arun Arumuganainar (aarumuga@hotmail.com)
Date: Sat Jun 17 2006 - 12:28:01 ART
Actually you may not be able to further aggregate a aggregate route unless
you form a as-set.
Pls. use this command to achieve this "aggregate < prefix> <mask> as-set " .
Pls. Note : You must have AS SET key word in the end of the aggregate
command.
Resulting route thus generated will have AS path represented as 700{ 100 200
300 400 }
Pls. note : Cofed AS will be automatically removed when it is advertised to
R6 which is in AS 800.
Thanks and Regards
Arun
----- Original Message -----
From: "san" <san.study@gmail.com>
To: "Navin MS" <navin_ms07@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Saturday, June 17, 2006 10:40 AM
Subject: Re: A Tricky Confed scenario
> Can you try "remove private-as" bgp neighbor command to R6. & also dont
> set "as-set" in the aggregate command at R4
>
>
>
>
> On 6/16/06, Navin MS <navin_ms07@yahoo.com> wrote:
> >
> > Sorry for the typo ... it should be
> >
> > R5 sends an aggregate route to R4 with AS_PATH = "65005 {300 400}"
> >
> >
> > --- Navin MS <navin_ms07@yahoo.com> wrote:
> >
> > > Hi Group,
> > >
> > > While doing a BGP scenario I stumbled upon the following.
> > >
> > > R3
> > > |
> > > |
> > > R4 ---- R5
> > > |
> > > |
> > > R6
> > >
> > > R3,R4,R5 belong to same Confed AS 700 and R6 belong to AS 800.
> > > R3 is in sub-AS 65003
> > > R4 is in sub-AS 65004
> > > R5 is in sub-AS 65005
> > >
> > > R3 sends an aggregate route to R4 with AS_PATH = "65003 {100 200}"
> > > R5 sends an aggregate route to R4 with AS_PATH = "65004 {300 400}"
> > > Now, R4 has to send an aggregate of the above two aggregated routes to
> > R6 BUT should remove the
> > > Private ASes 65003 and 65004.
> > >
> > > How can I accomplish this ? What will the AS_PATH looks like ?
> > >
> > > Thanks,
> > > Naveen.
> > >
> > >
> > >
> > > __________________________________________________
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> > >
> > >
This archive was generated by hypermail 2.1.4 : Sat Jul 01 2006 - 07:57:33 ART