From owner-freebsd-hackers Tue Mar 24 16:41:53 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA29387 for freebsd-hackers-outgoing; Tue, 24 Mar 1998 16:41:53 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from misery.sdf.com (misery.sdf.com [204.244.213.32]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id QAA29376 for ; Tue, 24 Mar 1998 16:41:32 -0800 (PST) (envelope-from tom@sdf.com) Received: from tom by misery.sdf.com with smtp (Exim 1.82 #3) id 0yHdRc-0005KS-00; Tue, 24 Mar 1998 15:49:24 -0800 Date: Tue, 24 Mar 1998 15:49:20 -0800 (PST) From: Tom To: Snob Art Genre cc: freebsd-hackers@FreeBSD.ORG Subject: Re: ARP REQUEST question In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 24 Mar 1998, Snob Art Genre wrote: > On Tue, 24 Mar 1998, pratap singh wrote: > > > Hi all gurus of Networking, > > I have a basic doubt. Every layer has a cehcksum being calculated > > whereas the ARP frame does not have. Can anyone throw light on this > > please. Is it because the ARP packets donot traverse the LAN boundary > > and error rates in LAN environment are very low compared to the WAN > > error rates???? > > Probably. Also, let's say an ARP frame does get corrupted. Where do Ahh.. no. An error check is critical for ARP, as you will be using this information to locate a particular system. Thankfully, ethernet framing provides an error-check. > you report the error? Better just to wait for the request to get > retransmitted, which it will. Huh? Why would it get retransmitted? Some devices cache ARP entries for 2 hours, before making another request. Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message