North American Network Operators Group
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Re: load balancing and fault tolerance without load balancer

  • From: John Moser
  • Date: Fri Mar 14 14:54:00 2008
  • Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
  • Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=private; d=diamondgate.net; b=nJKf/ZG6C1VDj1WE/IhaDpiXHTPsW9AaHwM+dFvw1xJETcyDKSz3iPKU6hfEdF+u;
>
>
> On 14-Mar-2008, at 12:42, Joe Shen wrote:
>
>>   Is there any way to solve problem above?
>
> The approach described in
> <http://www.nanog.org/mtg-0505/abley.cluster.html
>  > would probably work, so long as the routers choosing between the
> ECMP routes are able to make route selections per flow, and not just
> per packet (e.g. "ip cef" on a cisco).
>
> Tony Kapela did a lightning talk a few meetings ago about another
> cisco-specific approach which used some kind of SLA-measuring cisco
> feature to do the same thing without needing to run a routing protocol
> on a server. I can't seem to find a link to the details, but if
> someone else knows where it is it'd be good to know.

http://www.nanog.org/mtg-0710/presentations/Kapela-lightning.pdf

-John