Date: Fri, 04 Feb 2011 15:35:10 +0100 From: Damien Fleuriot <ml@my.gd> To: Bernhard Schmidt <bschmidt@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: link aggregation - bundling 2 lagg interfaces together Message-ID: <4D4C0E9E.80304@my.gd> In-Reply-To: <201102041342.03522.bschmidt@freebsd.org> References: <4D4BED80.5060806@my.gd> <201102041342.03522.bschmidt@freebsd.org>
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On 2/4/11 1:42 PM, Bernhard Schmidt wrote: > On Friday 04 February 2011 13:13:52 Damien Fleuriot wrote: >> Hello list, >> >> >> >> I have a firewall with 2x Intel pro dual port cards. >> >> On Intel A , port 1 goes to switch 1, port 2 goes to switch 2 >> On Intel B , port 1 goes to switch 1, port 2 goes to switch 2 >> >> >> I have created the following 2 lagg devices using LACP: >> >> lagg0 = A1 + B1 >> lagg1 = A2 + B2 >> >> This works fine. >> >> >> Now, what I had in mind was creating a lagg2 device using lagg0 and >> lagg1 with failover. >> >> That would provide redundancy in case of a switch failure. >> >> ifconfig won't let me though: >> >> # ifconfig lagg2 laggproto failover laggport lagg0 laggport lagg1 >> ifconfig: SIOCSLAGGPORT: Invalid argument >> >> >> >> I suppose it's not possible to aggregate lagg interfaces ? >> >> That would shatter my dreams :( > > I have no clue if that is at all possible, or makes any sense at all, > but can't you just add all 4 ports one lagg interface? > I'm afraid this is not an option, the switches are not stacked. They will create 2 separate etherchannels, and I'll get alerts about the MAC addresses flapping -.-
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