Date: Mon, 21 Nov 2005 20:41:31 +0900 From: Kazuaki Oda <kaakun@highway.ne.jp> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: freebsd-net@FreeBSD.org Subject: Re: gratuitous ARP from CARP backup host Message-ID: <4381B26B.6080407@highway.ne.jp> In-Reply-To: <20051121111717.GO24212@cell.sick.ru> References: <437F4D18.9030003@highway.ne.jp> <20051121111717.GO24212@cell.sick.ru>
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Gleb Smirnoff wrote: > On Sun, Nov 20, 2005 at 01:04:40AM +0900, Kazuaki Oda wrote: > K> I reported a problem a few days ago that CARP backup host replies ARP > K> request. This problem has been fixed, thanks. But I found one more > K> problem. > K> > K> 1) master host and backup host are connected to the same layer 3 > K> switch. > K> > K> 2) at master host, I run the following command: > K> # ifconfig carp2 create > K> # ifconfig carp2 vhid 22 advskew 10 pass xxxx 192.168.1.7/24 > K> > K> 3) master host sends gratuitous ARP. > K> > K> 4) at backup host, I run the following command: > K> # ifconfig carp2 create > K> # ifconfig carp2 vhid 22 advskew 100 pass xxxx 192.168.1.7/24 > K> > K> 5) backup host sends gratuitous ARP. > K> And so, layer 3 switch sends packets addressed for 192.168.1.7 to > K> the port connected to backup host, sigh... > > Does it sends packets until next advertisement from master or forever? > Forever. Master host never receives the packets. -------------------- Kazuaki Oda
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