[SATLUG] Routing from one box to two different ISPs

[Bruce Dubbs]

Daniel J. Givens wrote:
> I wrote:
>>> In theory, if you
>>> setup both default gateways with the same metric, you would get
>>> round-robin load balanced routing. 
> 
> I've been playing with doing equalized multipath routing tonight using
> the ip route commands and found some interesting things out. The
> Advanced Routing page is the right path. I've had an issue with
> multipath route caching though and only one of my routes is being used.
> Apparently, there is a kernel option that is messing me up, so I'm
> recompiling now. If CONFIG_IP_ROUTE_MULTIPATH_CACHED is enabled, for
> some reason, it won't load balance. It will fail-over, but it won't load
> balance. I will let you know how it goes tomorrow night when I get the
> new kernel installed and routing tested.

This is interesting.  Where do you find
CONFIG_IP_ROUTE_MULTIPATH_CACHED?  I looked in the kernel configuration
and couldn't find it.  I looked in 2.6.20.3 and 2.6.12.5.

Grepping through the source, I can find it for the arm and mips
architectures, and even something called the SuperH RISC processor for
embedded systems but not for Intel.

  -- Bruce