[LARTC] load balancing between two default gateways

[Askar]

rsenykoff@harrislogic.com wrote:

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>
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>  
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>>Now what I want may be "shapping" to route 70% traffic via 2Mb and
>>30  via 1Mb.
>>Is this possible via iproute2? if yes I will greatly appreciate if
>>someone helps newbie to iproute2 :)
>>    
>>
>
>You can read the multipath routing section on lartc.org - Click on
>"Dive in" :)
></snip>
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>I've been running load balancing between my cable modem and dsl. It works
>pretty well actually. Here's a link to the script I use:
>
>http://www.burnpc.com/website.nsf/all/FE5F4F294F508EB786256E600019BC30
>
>I also use the load balancer to do NAT between the subnet of the cable
>modem, subnet of DSL, and subnet my boxes are on. Also in there are some
>static route rules in case you always want to use a particular connection
>for certain traffic. In my case, my DSL modem is used for VPNs to work
>(Linksys BEFVP41) so I always send traffic for those IPs out through the
>appropriate NIC.
>
>To try to achieve the 70 / 30 rule I recommend doing something like this to
>the line
>ip route add default table 222 proto static nexthop via $GWE1 dev $IFE1
>weight 1 nexthop via $GWE2 dev $IFE2 weight 1
>
>ip route add default table 222 proto static nexthop via $GWE1 dev $IFE1
>weight 7 nexthop via $GWE2 dev $IFE2 weight 3
>
>I suggest reading up on the documentation to understand what those weight
>parameters really do. In essence they add 7 routes via one interface, and 3
>via the other. Then the load balancer round-robbins between them.
>
>The easynews piece in there works in conjunction with Flashget. I set
>flashget's multiproxy up, and it will create multiple threads over the two
>ports. I'm able to download from easynews then at the total combined speed
>of the connections ==== fast!!!
>
>Let me know if you have any questions,
>-Ron
>
>_______________________________________________
>LARTC mailing list / LARTC@mailman.ds9a.nl
>http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
>  
>
Thanks for the quick reply, okay i will let you know after reading the 
docs section you suggested. before going to deploy these ip rule on our 
production envirnoment I have few questions.
we are also doing iproute2 + iptables MARKing on this machine to route 
port 80 traffic to our proxy/cache servers. Now the ip rules you 
suggested will not do anything with those already in place okay?
#ip rule show
32764:  from all fwmark 0x4 lookup wwwPcache.out <--- we have three like 
this
.
.
Second to make the ip rule working I still need the convention "route" 
in place before doing ip rule things?
# route add default gw xxx.xxx.xxx.xx ?

regards
Askar