From owner-freebsd-net@FreeBSD.ORG Thu May 29 09:15:54 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 A373637B401; Thu, 29 May 2003 09:15:54 -0700 (PDT) Received: from hindon.hss.co.in (hindon.hss.co.in [202.54.26.202]) by mx1.FreeBSD.org (Postfix) with ESMTP id E5E9F43F85; Thu, 29 May 2003 09:15:48 -0700 (PDT) (envelope-from mvsjetti@hss.hns.com) Received: from hindon.hss.co.in (localhost [127.0.0.1]) by hindon.hss.co.in (8.10.0/8.10.0) with ESMTP id h4TGDJP11852; Thu, 29 May 2003 21:43:19 +0530 (IST) Received: from ultra.hss.co.in (ultra [192.168.100.5]) by hindon.hss.co.in (8.10.0/8.10.0) with ESMTP id h4TGDE911843; Thu, 29 May 2003 21:43:14 +0530 (IST) Received: from sandesh.hss.hns.com (localhost [127.0.0.1]) by ultra.hss.co.in (8.10.0/8.10.0) with ESMTP id h4TGGYh04949; Thu, 29 May 2003 21:46:34 +0530 (IST) Sensitivity: To: "Sreekanth" From: mvsjetti@hss.hns.com Date: Thu, 29 May 2003 21:47:07 +0530 Message-ID: X-MIMETrack: Serialize by Router on Sandesh/HSS(Release 6.0|September 26, 2002) at 29/05/2003 09:40:50 PM MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII 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 16:15:55 -0000 hi, I had checked the kernel code of the freeBsd. In case of fxp port " fxp_ether_ioctl" fucntional will be called when we add a new address to an interface(using the if_ioctl pointer from the in_ifinit fucntion). And this fuction will inturn call the arp_ifinit fucntion which sends the gratituos ARP. I am not able to find this kind of fucntionality for em. I am not the sure whether the code i am having was incomplete or some fucntonality was missing in the implementation. This may be the case of incomplete intitlaization( if_ioctl of the ifp may not be initlized properly). If u can do kernel debugging put break point at the "arp_ifinit" and verify if this was getting called or not.................. cheers, mahesh "Sreekanth" @freebsd.org on 29/05/2003 21:01:29 Sent by: owner-freebsd-net@freebsd.org To: "'Petri Helenius'" , "'Ruslan Ermilov'" cc: freebsdnic@mailbox.cps.intel.com, freebsd-net@freebsd.org, akanwar@digitarchy.com Subject: RE: gratuitous ARP with em interface. 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 > > _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"