Re: OSPF Optional capabilities query

Ehsan Rezaaifar <ehsan.rezaaifar@ALCATEL.COM> Thu, 11 September 2003 20:57 UTC

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Date: Thu, 11 Sep 2003 16:28:32 -0400
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From: Ehsan Rezaaifar <ehsan.rezaaifar@ALCATEL.COM>
Organization: Alcatel CID
Subject: Re: OSPF Optional capabilities query
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Hi,

The DN bit is used for OSPF PE-CE,  introduced in
"draft-rosen-ppvpn-ospf2547-area0"

Take care,
Ehsan

Mark Christopher Puddephatt wrote:

> Group,
>
> I am a PhD researcher at the University of Salford, UK, and am researching
> into OSPF. I have read the recent draft "Extensions to OSPF for Advertising
> Optional Router Capabilities", and it mentions that all the bits in the
> Options field of the Hello packet are now in use.
>
> However I cannot seem to find a full list of what they are all in use for.
> RFC-2328 lists five bits of the 8, namely the E-bit, MC-bit, N/P-bit, DC-bit
> and the EA-bit. RFC-2370 adds the O-bit. In Christian Huitema's "Routing in
> the Internet" a T-bit is mentioned for TOS routing. That makes seven.
>
> Could someone please point out to me what the final bit is being used for?
>
> Thank you,
>
> Mark
>
> Mark Puddephatt
> **********************************************************
> m.c.puddephatt@pgr.salford.ac.uk or mark@markpud.com
> CNTR www.cntr.net
> School of Computing, Science and Engineering
> University of Salford www.salford.ac.uk
> **********************************************************