I can neither confirm nor deny that it was part of any test that I ever
took, but ip ospf network point-to-point is a good thing to understand
about OSPF. By default OSPF treats a loopback address as a stub host
and advertises a /32 no matter what is configured as the mask on the
interface. The network point-to-point command instructs OSPF to treat it
as a network/subnet and to advertise the mask that is configured.
This was added to IOS a while back (in 11.mumble if I remember
correctly).
Rick
Niels Bakker wrote:
>
> > On Tue, Apr 16, 2002 at 09:40:38PM +0800, Nick wrote:
> >> the magic was to add 'ip ospf network point-to-point' under the lo0
> >> interface - thankfully pointed out by a legend on this mailing list.
>
> * gert@greenie.muc.de (Gert Doering) [Tue 16 Apr 2002, 15:39 CEST]:
> > Huh? Now what is that one doing? *curious*
>
> It makes it possible for Loopback0 to get a non-/32 netmask
> redistributed into OSPF and other dynamic routing protocols.
>
> I think this trick is actually part of some CCIE lab tests :)
>
> Regards,
>
> -- Niels.
-- Rick Burts CCIE 4615 CCSI Email: rburts@netcraftsmen.net Chesapeake NetCraftsmen 1290 Bay Dale Drive, #312 443.994.0675 Arnold, MD 21012-2325 WWW: http://www.netcraftsmen.netWith 7 CCIEs on staff Chesapeake NetCraftsmen offers services in network consulting and training. Our services include Network Design, Implementation, Troubleshooting as well as Network Management.
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