[LARTC] Redundant Internet connections [Updated]

[Seth J. Blank]

Robert Kurjata wrote:

>I have a load balancing setup for 3 uplinks (3 different providers and
>technologies) w/failover set with http://www.ssi.bg/~ja/ Nano-HOWTO
>(carefully done By-The-Book - any shortcut and it's gone).
>  
>
I have finished implementing this step by step, and things still do not 
appear to be working.

During the testing phase, I have two problems (output which differs from 
what the howto says I should get).
1) When I run "ip route list table main", only the proper entries for 
NWE1/NME1 and NWE2/NME2 come up, not the one for NWI/NMI.
2) "ip route get from (IPE1|IPE2) to 204.152.189.113" both return 
"network unreachable"
All the other output matches exactly.

My only thoughts are that I've swapped an IP or two somewhere, but I've 
been over the script a ton of times already, and nothing presents itself 
to me.

Any help or troubleshooting hints would be greatly appreciated.

Seth J. Blank
Systems Operations
Capital Market Services, LLC

>When you need to check if the net is reachable with either of the
>links just try to ping some machines outside (a set would be nice)
>forcing an output address to be one or the other and decide if you
>need to change normal multihop gateway to single hop one via link 1 or
>2. Should work with nano, because it's preserving output address thus
>preserving the routes. Works for me (after some sleepless nights, tons
>of caffe :). I can pull the plug out and nothing bad happens
>(only the traffic shaping needs some correction).
>
>
>[cut the rest]
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