Re: Juniper equivalent of Cisco's BGP Conditional Advertisements

From: JUN (yulingnan@yahoo.com)
Date: Tue Apr 30 2002 - 00:31:05 EDT


I am a bit slow and very lazy, could you please paste
your policy configs ?

Thanks
JUN

----- Original Message -----
From: "HHH" <jnciecert@yahoo.com>
To: <mellotte@netcsc.com>;
<juniper-nsp@puck.nether.net>
Sent: Monday, April 29, 2002 10:29 PM
Subject: Re: Juniper equivalent of Cisco's BGP
Conditional Advertisements

> ..and you also have to use aggregates in conjunction
> as the variable.
>
> --- HHH <jnciecert@yahoo.com> wrote:
> > There isn't a command that directly does this, but
> > can
> > be acheived using juniper policy
> > expressions...remember, (p1 && p2) || p3 is
> > equivalent
> > of if p1 then p2 else p3... be creative.
> >
> > --- Eric Mellott <mellotte@netcsc.com> wrote:
> > > Does anyone know if and how Juniper implements
> > > something similar to Cisco's
> > > BGP Conditional Advertisements. Cisco's
> > > Conditional advertisement is
> > > useful in a multihomed network, in which some
> > > prefixes are to be advertised
> > > to one of the providers, only if information
from
> > > the other provider is
> > > missing. This condition would indicate a failure
> > in
> > > the peering session, or
> > > partial reachability. So, basically routes are
> > > advertised only if other
> > > routes disappear from table.
> > >
> >
> >
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>
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