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List:       ms-ospf
Subject:    Re: questions regarding unnumbered interface in OSPF
From:       Alex Zinin <zinin () AMT ! RU>
Date:       2000-02-28 9:07:17
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Dhaval,

As for (1), looking at
http://discuss.microsoft.com/SCRIPTS/WA-MSD.EXE?A2=ind9810&L=OSPF&P=R2570&D=0&H=0&O=T&T=1
should help.

Regarding (2): you're correct, no type-3 link must be added
into a router-lsa for an unnumbered p-t-p link.

--
Alex

Saturday, February 26, 2000, 2:11:46 AM, Dhaval <dshah@IPRG.NOKIA.COM> wrote:

> Hi All,
>         Two questions:

>         (1). The RFC 2328 says that if either end of the virtual link is an
> unnumbered interface, then the link "may" fail. OSPF sends unicast
> packets over virtual link and hence it need to know the source/dest
> addresses and hence if either end of the virtual is configured without
> IP addresses, it will fail.
>         Is this true in all cases? Then why the RFC says it MAY fail - meaning
> there is a way to run virtual link successfuly over unnumbered
> interfaces?

>         (2). Section 12.4.1.1 of RFC 2328 says that a type 3 stub link should
> be added while describing the p2p link in the router lsa. I wonder
> whether it is necessary to add the stub link if the neighbor's IP
> address is not known, meaniong the p2p is unnumbered. I think its not
> required. Is that true?

> any information would be greatly appreciated.

> thanks
> Dhaval.



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