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On Sun, Jan 19, 2003 at 01:32:15AM -0000, Andy Coates wrote:
> I currently have 2 ADSL modems, provided by the same ISP and terminating
> on the same gateway (I think having the same gateway is what is causing
> the problems, since the nexthop is always the same for each interface).
> I've tried using equal cost multipath (using ip route to set two
> nexthops with equal weights). Problem is I believe this uses route
> lookups to determine which interface to use, and thus for sending data
> to common destinations it only ever uses 1 interface.
>=20
> Does anyone know if its even possible to send packets over each
> interface "equally"? I read somewhere that you might be able to clear
> the route cache after every packet, but I've only seen people talk about
> it and don't know if its true.
>=20
> Can anyone help?
>=20
> I'm running 2.4.20 on Debian (woody), with both ADSL modems using PPPoA
> and with most of the QoS and network queuing modules installed. AFAIK,
> my provider doesn't support multilink.
I've done this in a previous life on a [patched] 2.2 kernel with using
ISDN-interfaces, using the 'equalize' parameter in the nexthop statement.
Possibly, 2.4 supports this natively - but I cannot test it at home.
You could try something along the lines of the following though (note the
equalize!):
ip route add default scope global equalize nexthop dev ppp0 via 12.34.56.78=
\
nexthop dev ppp1 via 12.34.56.78
(It won't give you doubled download speed of course, this will only help you
while uploading - but only if your provider isn't doing per-connection
egress filtering in the upstream gateway)
Regards,
--=20
Jasper Spaans
http://jsp.vs19.net/contact/
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