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In its current configuration one of our Linux boxes has 2 DSL
modems that connect to the same service provider. On the router packets
coming in from the network destined for the internet are marked alternating
using nth match those packets are supposed to be picked up by iproute2 and
routed out the physical connections based on that mark, thereby doubling the
outbound bandwidth. The problem is that only 1 of the DSL modems gets
used to send the traffic. I have verified that the mark is being set. Apparently
iproute2 is not applying the policy routing correctly. Has anyone
encountered similar problems? In a related but different problem the local box marks
packets in a similar manner using the output mangle chain but these marks are
not honored by iproute2. They are routed based on the default route in
the main table.(if no default route in main table they go nowhere) The iproute2 rules are like : ip ro add table 20 default dev
ppp1 ip ru add fwmark 2 table 20 I feel like I am missing something that should be obvious.
This box is also doing NAT so is it possible that I am seeing some odd
interaction? Joe Gavin |
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