Load Balancing between two DSL Modems

Load Balancing between two DSL Modems

Post by davinderku.. » Tue, 07 Feb 2006 21:43:08



Hello,

I have two DSL modems and I want to use both (not only for getting
double bandwidth). I have found only two solutions:

1. using Load balancing router like DLink LB604 etc which has two WAN
ports.
2. using a PC which will have 3 network cards, 2 for 2 DSLs and 1 for
LAN (10 connection). then configuring the routing table so that some of
the machines use the one DSL and some second DSL.

Is there any other solutions?

Thanks,
Davinder

 
 
 

Load Balancing between two DSL Modems

Post by Moe Tr » Wed, 08 Feb 2006 04:52:21


On 6 Feb 2006, in the Usenet newsgroup comp.os.linux.networking, in article


>I have two DSL modems and I want to use both (not only for getting
>double bandwidth). I have found only two solutions:

>1. using Load balancing router like DLink LB604 etc which has two WAN
>ports.

-rw-rw-r--    1 gferg    ldp        297491 Sep  4  2003 Adv-Routing-HOWTO

Quote:>2. using a PC which will have 3 network cards, 2 for 2 DSLs and 1 for
>LAN (10 connection). then configuring the routing table so that some of
>the machines use the one DSL and some second DSL.

>Is there any other solutions?

Unless the two DSL links are to the same provider, and you have made
arrangements with them to split the traffic, then your second solution is
probably going to be best.   A single host making a connection to a remote
server such as the FTP server at nus.edu.sg is only going to be able to use
a single link, because if you used two, you would appear to be two separate
unrelated systems.

        Old guy

 
 
 

Load Balancing between two DSL Modems

Post by buck » Wed, 08 Feb 2006 13:54:32



Quote:>Hello,

>I have two DSL modems and I want to use both (not only for getting
>double bandwidth). I have found only two solutions:

>1. using Load balancing router like DLink LB604 etc which has two WAN
>ports.
>2. using a PC which will have 3 network cards, 2 for 2 DSLs and 1 for
>LAN (10 connection). then configuring the routing table so that some of
>the machines use the one DSL and some second DSL.

>Is there any other solutions?

>Thanks,
>Davinder

Ask your privider if they do "multilink".  If you can find an ISP that
does, it works pretty well even if setting it up is a pain.  Actually,
the pain comes in when one modem connects but the other fails.  I had
to write a script to figure out which one failed to connect and to
force it to retry until success.

There is also a program something like FlashGet that will make
multiple connections.  http://yesican.chsoft.biz/lartc/success.txt
--
buck

 
 
 

1. load balance two two nic cards, one cable modem?

Anyone have any thoughts on the potential for:

putting three nics in a Unix box, grabbing two DHCP addrs from
Roadrunner  (in my case), with the first two nics, and using the third
as a natted default gateway for internal boxes.  and load balancing
the two on a packet-by-packet basis?  

Theoretically this would effectively double the bandwidth of a
connection behind the network.  Throttled upstream say at 180kbit/sec
would go to a theoretical 360k/sec and the 1mbit/downstream would turn
into 2mbit/downstream.

I'm positive this will work but am curious mostly on what software
would be capable of doing this across two nics.  I had considered one
nic but realised that no dhcp server in their right mind will assign
two IP addresses to one mac.   I was thinking that perhaps I could run
gated with equal metrics ..or something like that..

thanks for all input.

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