Re: description of p2p link in r-LSA

Acee Lindem <acee@REDBACK.COM> Mon, 02 September 2002 14:22 UTC

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Date: Mon, 02 Sep 2002 10:21:14 -0400
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From: Acee Lindem <acee@REDBACK.COM>
Subject: Re: description of p2p link in r-LSA
To: OSPF@DISCUSS.MICROSOFT.COM
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Manral, Vishwas wrote:

> Hi Zhongjie Li,
>
> 1) The few implementations I know of use option 2.


For the sake of clarification, I believe Vishwas means option 2
as defined in the RFC 2328 (as opposed to Zhonglie's E-mail
where the two options are reversed).


> 2) No, there should be no interoperabilty concerns/problems if the two ends
> use different options. However in that case we would have a host route(/32)
> as well as a network route.
>
> Also check the link
> http://discuss.microsoft.com/SCRIPTS/WA-MSD.EXE?A2=ind9908&L=OSPF&P=R3243&I=
> -3. A similar discussion was on the list a few days back too.
>
> Thanks,
> Vishwas
>
> -----Original Message-----
> From: Li Zhongjie [mailto:lzj@CSNET1.CS.TSINGHUA.EDU.CN]
> Sent: Monday, September 02, 2002 9:36 AM
> To: OSPF@DISCUSS.MICROSOFT.COM
> Subject: description of p2p link in r-LSA
>
>
> Hi,
>
>   For a numbered point-to-point link, a router has two options to declare a
> stub link <link id,link data>:
>   1) <subnet number, subnet mask>
>   2) <endpoint ip address, all 1's mask>
>   as decribed in RFC2328 section 12.4.1.1 page 130.
>   Two questions to ask:
>   1) what is the mostly widely used option on the current Internet?
>   2) I think different routers in an OSPF area can use different options
> without causing any problems, right?
> ---
> Best Regards,
>
> Zhongjie Li
>
> ********************************************************************
> *    Zhongjie Li                                                   *
> *    Ph.D candidate, Department of Computer Science & Technology   *
> *    Tsinghua University, Beijing, 100084, P.R.China               *
> *    Tel: +86+10-62788109     Fax:  +86+10-62788109                *
> *    Email: lzj@csnet1.cs.tsinghua.edu.cn                          *
> ********************************************************************
>
>


--
Acee