Date: Thu, 29 May 2003 09:36:27 -0700 From: "Sreekanth" <sreekanth@redlinenetworks.com> To: <mvsjetti@hss.hns.com> Cc: akanwar@digitarchy.com Subject: RE: gratuitous ARP with em interface. Message-ID: <000001c32600$73ca2930$ae28a8c0@SREELAPTOP> In-Reply-To: <OF3FBE8F6A.5BA8777C-ON65256D35.00565373@hss.hns.com>
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em_ioctl() has a call to ether_ioctl() which in turn calls arp_ifinit(). Sreekanth > -----Original Message----- > From: mvsjetti@hss.hns.com [mailto:mvsjetti@hss.hns.com] > Sent: Thursday, May 29, 2003 9:17 AM > To: Sreekanth > Cc: 'Petri Helenius'; 'Ruslan Ermilov'; > freebsdnic@mailbox.cps.intel.com; freebsd-net@freebsd.org; > akanwar@digitarchy.com > Subject: RE: gratuitous ARP with em interface. > > > > > > > > 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" <sreekanth@redlinenetworks.com>@freebsd.org on > 29/05/2003 21:01:29 > > Sent by: owner-freebsd-net@freebsd.org > > > To: "'Petri Helenius'" <pete@he.iki.fi>, "'Ruslan Ermilov'" > <ru@freebsd.org> > 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/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 > >
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