How to combine three wan to double the speed

Hi Fouad,

Thank you for reaching out to Sophos Community.

Multiple WAN link Aggregation isn’t possible.

Even If the ISP merged from their side ?

Hi Fouad,

If it’s merged from the ISP side already, I think it might as well be good to request it to be linked or set to one ISP having 60Mb speed as per your requirement.

Or you may put in a switch if it’s merged already and then connect it to the Sophos Firewall WAN link, but this isn’t advisable as you can't monitor.

You may check these other posts with similar queries as yours.

 How to configure dual wan as link aggregation ? 

 TWO different internet(WAN) connections in ONE SOPHOS XG 210 

I tested to change the wan load balancing to weighted-round-robin and I found the speed test double the internet speed

Hi Fouad,

That is great to hear. 

Just to be sure. This will not "double your speed". 

Speedtests use multiple connections, so "it looks like double speed". 

But one download of one file will always be limited to one ISP. This is due the technical restriction of the way MASQ works.

If you have a multiline download client, you will see an increase of speed. If you download one single file, it will be limited.