Date: Fri, 01 Mar 2002 10:35:55 -0800 From: "George V. Neville-Neil" <gnn@neville-neil.com> To: Luigi Rizzo <rizzo@icir.org> Cc: Bob Bishop <rb@gid.co.uk>, Doug Ambrisko <ambrisko@ambrisko.com>, hackers@FreeBSD.ORG Subject: Re: Multicast problem with sis interface? Message-ID: <200203011835.KAA1838206@meer.meer.net> In-Reply-To: Message from Luigi Rizzo <rizzo@icir.org> of "Fri, 01 Mar 2002 03:56:23 PST." <20020301035623.A32974@iguana.icir.org>
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OK, here is the official answer: 4.2.3.3 Minimum frame size The CSMA/CD Media Access mechanism requires that a minimum frame length of minFrameSize bits be transmitted. If frameSize is less than minFrameSize, then the CSMA/CD MAC sub layer shall append extra bits in units of octets, after the end of the MAC client data field but prior to calculating, and appending, the FCS. The number of extra bits shall be sufficient to ensure that the frame, from the DA field through the FCS field inclusive, is at least minFrameSize its. The content of the pad is unspecified. The most important part of course is that last sentence "The content of the pad is unspecified." I guess we can forget the patch then ;-) That's what I get for not reading the spec first. Later, George -- George V. Neville-Neil gnn@neville-neil.com NIC:GN82 "Those who would trade liberty for temporary security deserve neither" - Benjamin Franklin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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