Subject: Re: AW: Hide a network between two routers

From: Shehzad Merchant <[email-masked]>
Date: Fri, 26 Apr 2002 13:00:09 -0700

Below...

> -----Original Message-----
> From: Acee Lindem [mailto:[email-masked]]
> Sent: Friday, April 26, 2002 7:20 AM
> To: [email-masked]
> Subject: Re: AW: Hide a network between two routers
>
>
> Markus Prison wrote:
> > Hi Acee,
> >
> > it will be a single broadcast network betweeen this two routers.
> > For ther routers around them it should look that there is
> no network between
> > them.
> >
> > What do you meen with tunnel?
>
> I mean a GRE or IPIP tunnel.
>
> You can do it with OSPF but it is ugly.
>
>    1. Configure the "hidden" network in a separate area.
>    2. Configure "no-advertise" ranges for the "hidden"
>       network.
>    3. Configure a virtual link between the two routers
>       traversing the separate area.
>

You'd probably still get a ttl decrement when forwarding traffic. Not clear
if the intent is to avoid that...

-Shehzad

>
> >
> > Markus
> >
> > -----Ursprungliche Nachricht-----
> > Von: Mailing List [mailto:[email-masked]]Im
> Auftrag von Acee
> > Lindem
> > Gesendet: Freitag, 26. April 2002 15:55
> > An: [email-masked]
> > Betreff: Re: Hide a network between two routers
> >
> >
> > Markus Prison wrote:
> >
> >>Hi people,
> >>
> >>my question will be if it's possible to hide a network
> between two routers
> >>for the routers that are connected to them within the ospf standard.
> >>
> >
> > What do you mean by hide - is it a single network? The
> simple answer would
> > be to configure a tunnel between the two routers and run
> OSPF over the
> > tunnel rather than the physical network you are trying to hide.
> >
> >
> >>When it's not possible what do you suggest what changes i
> must do in my
> >>ospf code of the two routers.
> >>
> >>
> >>
> >
> >
> > --
> > Acee
> >
> >
>
>
> --
> Acee
>