[svlug] multiple ricochet wireless router?
anmol at teknema.com
Sat Mar 10 17:27:01 PST 2001
On Sat, 10 Mar 2001, Joey Hess wrote:
> Anmol Khirbat wrote:
> > With all the modems plugged into a single box, multilink PPP is a
> > possibility. Your kernel or ppp modules must be built with PPP Multilink
> > support. You also need a version of pppd which supports the mp stuff, pppd
> > 2.4.x for instance.
> > The catch is that multilink PPP must be supported by the other end too.
> > I guess getting all this to work is a long shot.
> With ricochet modems, as far as I know, the "other end" of the ppp
> connection is the modem.
My end of the ``connection'' is a ``PPP network interface''. The other end
has to be one too.
> These devices do not speak ppp over the air, they use "lightweight
> ethernet protocol", or something like that (I forget what it's
It's true that PPP frames don't go over the air, but whatever goes over
the air probably does encapsulate PPP frames in some way.
I imagine that the linux kernel has nothing to do with what goes over the
> The ppp interface is presented to you by the modem itself.
I believe it would be more accurate to say that the modem looks like a
serial device to the kernel.
> What you want is a feature of linux kernels that allows you to bring
> up multiple interfaces and set up multiple defaults routes, one
> default route to each interface.
Linux does let you set up multiple default routes. According to RFC1122,
the IP layer MUST support multiple default routes.
> Then linux does some sort of per-connection load balancing, assigning
> each new connection to an appropriate interface (it may be as dumb as
> a round-robin, or it may be more intelligent, dunno).
RFC 1122 also suggests a round-robin, among other things, to select a
I have absolutely no idea how Linux deals with multiple default routes :-)
More information about the svlug