Return-Path: X-Original-To: ospf@ietfa.amsl.com Delivered-To: ospf@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3A0A721F84CD for ; Sat, 23 Jun 2012 10:17:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -6.599 X-Spam-Level: X-Spam-Status: No, score=-6.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4] Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id T5df+R+DWtdG for ; Sat, 23 Jun 2012 10:17:45 -0700 (PDT) Received: from imr3.ericy.com (imr3.ericy.com [198.24.6.13]) by ietfa.amsl.com (Postfix) with ESMTP id A351E21F84B6 for ; Sat, 23 Jun 2012 10:17:45 -0700 (PDT) Received: from eusaamw0707.eamcs.ericsson.se ([147.117.20.32]) by imr3.ericy.com (8.13.8/8.13.8) with ESMTP id q5NHHhsA031205 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Sat, 23 Jun 2012 12:17:44 -0500 Received: from EUSAACMS0702.eamcs.ericsson.se ([169.254.2.230]) by eusaamw0707.eamcs.ericsson.se ([147.117.20.32]) with mapi; Sat, 23 Jun 2012 13:17:42 -0400 From: Acee Lindem To: David Lamparter Date: Sat, 23 Jun 2012 13:17:40 -0400 Thread-Topic: [OSPF] OSPFv2 operation on broadcast media with "slacked"/"discontinuous" IP addressing Thread-Index: Ac1RZBlxx8hfH6Z9Tri+HGH75JJ3bA== Message-ID: <1405F13B-CF1A-4CCB-A782-C7FBDD553880@ericsson.com> References: <20120623133124.GA3653120@jupiter.n2.diac24.net> In-Reply-To: <20120623133124.GA3653120@jupiter.n2.diac24.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/signed; boundary="Apple-Mail-1--760075328"; protocol="application/pkcs7-signature"; micalg=sha1 MIME-Version: 1.0 Cc: "ospf@ietf.org" Subject: Re: [OSPF] OSPFv2 operation on broadcast media with "slacked"/"discontinuous" IP addressing X-BeenThere: ospf@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: The Official IETF OSPG WG Mailing List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jun 2012 17:17:46 -0000 --Apple-Mail-1--760075328 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii David, Nobody has ever suggested this - why do think it useful? Thanks, Acee On Jun 23, 2012, at 9:31 AM, David Lamparter wrote: > Hi, > > > out of a rather funny misunderstanding of RFC 5309, I've ended up with > half an implementation of OSPF running in ignorance of the IP subnet > mask on a broadcast network. After cleaning up the misunderstanding and > taking a step back, I found draft-ietf-ospf-hybrid-bcast-and-p2mp, which > I expected to contain a note about this, but no such thing. > > The general idea would be to operate a broadcast medium with a /32 > subnet mask, possibly unnumbered, and allowing adjacencies with just > about anything that sends a Hello (and passes auth). > > The link can operate as regular broadcast, hybrid-bcast-p2mp, or P-t-P > (the last would amount to RFC 5309 with the detail that the peer address > is not known up front.) > > (For OSPFv3, this is obviously not interesting since with link-local > addresses, there is no notion of similar same-subnet restrictions.) > > I haven't found anything on this - is this mode of operation already > described somewhere? > > > Cheers, > > David > _______________________________________________ > OSPF mailing list > OSPF@ietf.org > https://www.ietf.org/mailman/listinfo/ospf --Apple-Mail-1--760075328 Content-Disposition: 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