Date: Fri, 09 Mar 2001 09:31:05 +1100 From: Tony Landells <ahl@austclear.com.au> To: Nick Rogness <nick@rogness.net> Cc: Michael Johnson <ahze@ahze.net>, questions@FreeBSD.ORG Subject: Re: 2 ethernet cards working as one.. Is it possable? Message-ID: <200103082231.JAA28834@tungsten.austclear.com.au> In-Reply-To: Message from Nick Rogness <nick@rogness.net> of "Thu, 08 Mar 2001 14:46:40 MDT." <Pine.BSF.4.21.0103081442460.74800-100000@cody.jharris.com>
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> > What I want : > > - Computer A to be able to use NIC 1 & 2 as 1. > > Search the mailing list. Someone wrote a > netgraph module to do ether-channel to make 2 ethernet cards > become 1. Archie Cobb wrote it for me back in August/September last year but my testing window closed and the next one hasn't come. Note that this shouldn't be confused with Cisco ether-channel[1], because it isn't. It does multiplex on multiple links, though. The module is ng_one2many, and is in 4.2-RELEASE (I'm not sure exactly when it was committed though). Cheers, Tony [1] Archie's module basically accepts packets on any line, and when sending just rotates through the lines--simple but effective. The Cisco interpretation depends on the switch type: on most of them it actually performs an XOR of the two MAC addresses to decide which line to use; on the switches Cisco acquired from Kalpana (which I think they've killed from the product range now) it was a rotation algorithm, but I never had one so I can't tell you whether there were any eccentricities that would have stopped it working with ng_one2many. Sun Microsystems have a similar package for suitably equipped servers called "Sun Trunking" in which you can choose which algorithm to use, but I've only ever used the "standard" Cisco one. -- Tony Landells <ahl@austclear.com.au> Senior Network Engineer Ph: +61 3 9677 9319 Australian Clearing Services Pty Ltd Fax: +61 3 9677 9355 Level 4, Rialto North Tower 525 Collins Street Melbourne VIC 3000 Australia To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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