From owner-freebsd-net@FreeBSD.ORG Thu May 29 08:31:32 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0F2E437B401; Thu, 29 May 2003 08:31:32 -0700 (PDT) Received: from mail.redlinenetworks.com (mail.redlinenetworks.com [216.136.145.172]) by mx1.FreeBSD.org (Postfix) with ESMTP id 79E8C43FAF; Thu, 29 May 2003 08:31:31 -0700 (PDT) (envelope-from sreekanth@redlinenetworks.com) Received: from SREELAPTOP (dhcp-174.redlinenetworks.com [192.168.40.174]) h4TFVUM11167; Thu, 29 May 2003 08:31:30 -0700 (PDT) (envelope-from sreekanth@redlinenetworks.com) From: "Sreekanth" To: "'Petri Helenius'" , "'Ruslan Ermilov'" Date: Thu, 29 May 2003 08:31:29 -0700 Message-ID: <001101c325f7$607b29a0$ae28a8c0@SREELAPTOP> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 In-Reply-To: <3ED5F14E.8070205@he.iki.fi> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal cc: freebsdnic@mailbox.cps.intel.com cc: freebsd-net@freebsd.org cc: akanwar@digitarchy.com Subject: RE: gratuitous ARP with em interface. X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 May 2003 15:31:32 -0000 Could be attributed to the spanning tree in the switch.I have seen it happening(especially with cisco switches).I bet you are not able to send out any packet(Not just Garp). Sreekanth > -----Original Message----- > From: owner-freebsd-net@freebsd.org > [mailto:owner-freebsd-net@freebsd.org] On Behalf Of Petri Helenius > Sent: Thursday, May 29, 2003 4:39 AM > To: Ruslan Ermilov > Cc: freebsdnic@mailbox.cps.intel.com; akanwar@digitarchy.com; > freebsd-net@freebsd.org > Subject: Re: gratuitous ARP with em interface. > > > > I haven't looked that deep into why, but em is quite slow on > coming up > compared to > fxp for example. Probably something to do with hardware > re-initialization. > > Pete > > > Ruslan Ermilov wrote: > > >On Wed, May 28, 2003 at 07:57:07PM -0400, > akanwar@digitarchy.com wrote: > > > > > >>Hi all, > >> > >>Is there a known issue with alias IPs on em interfaces not > sending out > >>gratuitous arps ? > >> > >>The situation is as follows: > >> I am running a custom redundancy daemon that migrates the > IP address > >>of a server from one interface to another in case the > active network > >>path fails. Till now I was experimenting with two fxp > interfaces and > >>everything worked perfectly. i.e. when the ip address moved over > >>(using a perl script to run ifconfig commands) it sent out > grat. arps > >>for each of its alias IPs. This allowed the router to > update its Arp > >>table and talk to the newly active interface. > >> > >>Now when I try running the code with em (gigabit Ethernet > over copper) > >>NICs, I simply do not see the gratuitous arps come out of the new > >>interface. > >> > >>I am at a loss to understand what has changed. Could it be that the > >>line DOWN -> UP time of the em interface is longer thereby > causing a > >>loss of ARPs ? Any suggestions ? > >> > >> > >> > >Yes, I can reproduce this too, no gratuitous ARP is sent. > > > > > >Cheers, > > > > > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/free> bsd-net > To > unsubscribe, send any mail to > "freebsd-net-unsubscribe@freebsd.org" > > --- > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.483 / Virus Database: 279 - Release Date: 5/19/2003 > >