Date: Tue, 24 Mar 1998 20:50:18 -0500 (EST) From: Snob Art Genre <benedict@echonyc.com> To: Tom <tom@sdf.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: ARP REQUEST question Message-ID: <Pine.GSO.3.96.980324204322.20482A-100000@echonyc.com> In-Reply-To: <Pine.BSF.3.95q.980324154625.20043B-100000@misery.sdf.com>
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On Tue, 24 Mar 1998, Tom wrote: > > 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're right, but -- The question was about ARP requests, wasn't it? Let's say I want to talk to you, and my request gets corrupted. My ARP code should retransmit fairly quickly. For ARP replies, yes, corruption would be a Bad Thing. Good thing there's that CRC I forgot about. :-) > Huh? Why would it get retransmitted? Some devices cache ARP entries > for 2 hours, before making another request. Only if the request is completed (in the case of a corrupted ARP reply). If a request gets corrupted enough times to time out, which is pretty unlikely, all I get is an incomplete ARP entry, which lasts three minutes on most systems, if I recall correctly. Ben "You have your mind on computers, it seems." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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