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AnBordSnip
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Round-robin of upload packets on two DSL lines

Mon Jul 20, 2009 1:30 pm

Hi,

I have two 3M/384k DSL lines working with a RB532A MT v3.25.
Currently I have both of them set as the default gateway.
When a TCP connection is made, one of them is arbitrarily chosen for the uplink for the duration of the connection.
This however means the connection is still limited to 384k though I can have two connections at that speed.

While I know it's not possible to combine the downlinks as there is no support at the ISP end, it should be possible to aggregate the uplinks.
Is it possible to route packets between the DSL interfaces in a round robin fashion so that I can achieve 768k uplink for a single connection?

I'm using fixed public IPs for both interfaces and am not using NAT.

Cheers
 
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Chupaka
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Re: Round-robin of upload packets on two DSL lines

Mon Jul 20, 2009 1:37 pm

hm... are you sure that your ISP will not block packets on first line with src-address of second line?..
 
AnBordSnip
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Re: Round-robin of upload packets on two DSL lines

Mon Jul 20, 2009 1:43 pm

No the ISP seems to let the uplink traffic through regardless of source IP.
Though I imagine it's because the source IPs are within the ISPs allocation.

Currently a connection seems to get tied to an uplink even though it maybe on a different downlink.
 
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Chupaka
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Re: Round-robin of upload packets on two DSL lines

Mon Jul 20, 2009 1:49 pm

so just use Nth to send packets to your interfaces by turn. you may just need to use src-NAT on non-native interface
 
AnBordSnip
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Re: Round-robin of upload packets on two DSL lines

Thu Jul 23, 2009 11:58 am

Yea Nth seems to have done the trick.

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Chupaka
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Re: Round-robin of upload packets on two DSL lines

Thu Jul 23, 2009 12:09 pm

glad to hear it =)

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