Date: Fri, 13 Jan 2006 16:14:12 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Ian Lord <mailing-lists@msdi.ca> Cc: freebsd-questions@freebsd.org Subject: Re: NIC bonding/teaming Message-ID: <20060113221411.GA10326@dan.emsphone.com> In-Reply-To: <7.0.0.16.2.20060113165547.054915c8@Msdi.ca> References: <43C80BF0.9050609@jim-liesl.org> <41B6048D-0F43-452A-8135-F2BF71B2DEF2@submonkey.net> <7.0.0.16.2.20060113165547.054915c8@Msdi.ca>
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In the last episode (Jan 13), Ian Lord said: > At 16:47 2006-01-13, Ceri Davies wrote: > >On 13 Jan 2006, at 20:22, jim feldman wrote: > >>Does 6.x have a nic bonding/teaming/failover feature like the linux > >>bond (rnd robin, failover, ld bal, trunking)? I'm thinking > >>multiple nics, one server, same lan/vlan. I've read up on CARP and > >>one2many, but they don't seem to do what bond does. > > > >I think you want ng_one2many(4). > > I did a lot of tests with carp (was not appropriate at all), and > ng_one2many > > I was able to make two nics appears at one with ng_one2many, but > after severals days of tests and research, dropped it because it > caused bad side effects and when I was pulling one nic out, it was > stopping to transmit/receive for some moment. Also on the switch, > both nics were registering the same mac address so my cisco was > sending me warning about it every minute. That's because you forgot to configure your cisco and tell it those two ports were trunked together :) Another alternative to ng_one2many is ng_fec, which despite its name does not actually negotiate the FEC protocol with the remote end (you have to hardcode it on the switch), but does do mac/ip port hashing. That prevents packet reordering within flows. Patches to add LACP negotiation (FEC is obsolete) are welcome though :) -- Dan Nelson dnelson@allantgroup.com
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