Date: Sun, 22 Jun 2008 15:41:01 +0100 From: Vince Hoffman <jhary@unsane.co.uk> To: martes@mgwigglesworth.com Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Andrew Thompson <thompsa@freebsd.org> Subject: Re: Use lagg(4) or Use Layer-4 Load Balancing? Message-ID: <485E647D.1030301@unsane.co.uk> In-Reply-To: <1213846763.14151.1.camel@localhost> References: <1213691523.22762.16.camel@localhost> <20080618172216.GA76058@citylink.fud.org.nz> <1213846763.14151.1.camel@localhost>
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Martes G Wigglesworth wrote: > I was attempting to find good information on how to achieve a type of > bonding using advanced routing on FreeBSD, such as with layer-4 routers, > that can bond multiple sources into a single overall larger source for > logical backbone creation for networks. > You could have a look at ng_one2many(4) I've never used it but it sounds like it could be what you are after according to the manpage. Vince > > On Wed, 2008-06-18 at 13:22 -0400, Andrew Thompson wrote: >> On Tue, Jun 17, 2008 at 04:32:03AM -0400, Martes G Wigglesworth wrote: >>> Greetings all. >>> >>> I have been attempting to research what I have been informed is >>> actually accomplished with layer-4 load balancing. I have seen many >>> articles and reviews that indicate that lagg(4) will accomplish the >>> teaming of multiple internet access sorces into a single logical pipe, >>> however, I have tried this using a dumb switch two nic interfaces and >>> this simply is not the case. >>> >>> I am new and may not have enough cool equipment around, however, aside >>> from using the fail-over mode for redundancy, and lacp on a supported >>> switch, then if lagg(4) could really combine multiple sources into one >>> for use as a larger overall backbone, then I should be able to get >>> doulbed bandwidth using two separate ports on an unmanaged switch using >>> some option on the lagg(4) driver, which is not the cast.(if this is >>> wrong I would be happy to get the correct information, however I have a >>> few network engineer references that say that you cannot do anything >>> more than layer-2 lacp with appropriate equipment to create an >>> isp-supported trunk) Even in the on-lamp interview the 7.0 developer >>> implies that you can do what I am attempting to research however, it is >>> not possible at layer 2 without an end-point. >> How are you testing this? You need to have multiple IP flows in order to >> fully utilise the multiple links. See this snippet from the handbook >> (i'll put it in the man page too). >> >> "Since frame ordering is mandatory on Ethernet links then any traffic >> between two stations always flows over the same physical link limiting >> the maximum speed to that of one interface. The transmit algorithm >> attempts to use as much information as it can to distinguish different >> traffic flows and balance across the available interfaces." >> >> >> Does that answer your question, you will not get more speed on a single >> download. >> >> >> Andrew >> _______________________________________________ >> 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" >> > > _______________________________________________ > 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"
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