Hi all,

We're currently trying to combine two connections using a 2820 for ADSL and a 3100 for SDSL. The problem is that the current SDSL bandwidth (2mb up/2mb down) has become insufficient. We also have a 13/0.8mb ADSL line unused though, so our hope was to base the network around the 2820, use the 3100 as the ethernet WAN2 and combine the lines so that uploading is done on the SDSL line (wan2) and downloading on the ADSL one. Trouble is, having successfully got it all connected, the system seems to just pick which connection it wants to use for a given client, and uses that connection for both uploading and downloading.

Can this be done in the way we wanted? We have had a suggestion that firewall rules are the way to go, but I couldn't find a way to configure it for this purpose.

Also, on a (probably) unrelated note, in this setup, when a connection defaults to WAN1, the public IP of WAN2 cannot be reached, though only from within the network, externally is fine. But, when it goes onto WAN2, both public IPs can be reached.

Any help would be greatly appreciated!

Perhaps WAN -> Load Balancing Policy may be of some use?

You can direct traffic towards WAN1/WAN2 based on source or destination IPs, Ports and Protocol. Maybe you can do something with that to get what your trying to achieve. For example, if uploads are always FTP, then you could direct all FTP traffic through WAN2. Or if uploads are always to the same servers, direct those destination IPs through WAN2 etc.

For example, I have a policy to direct all VPN traffic to my works VPN router through WAN2

Protocol: Any
Interface: WAN2 (Auto Fail Over: ticked)
Dest IP Start: xxx.xxx.xxx.xxx
Dest IP End: xxx.xxx.xxx.xxx

stuartio wrote: Hi all,

.....lines so that uploading is done on the SDSL line (wan2) and downloading on the ADSL one. ........

Can this be done in the way we wanted? We have had a suggestion that firewall rules are the way to go, but I couldn't find a way to configure it for this purpose.
reached.

Any help would be greatly appreciated!

You simply cannot use different lines for upload and download for a single connection (unless you can bond the lines together, on a lower layer then the IP Protocol).
Any Site will send the answer to the traffic it receives back to the IP it is coming from.

You can separate Traffic by source or target IP or protocol as Mehuge already said.

So, for example, if you assume, http is most time more download then upload, create a rule that for any ip to any ip, source port any destination port 80 or 443, traffic should to through the ADSL.
Or, if you look at smtp, make a rule source IP any target IP any destination port 25, through the SDSL line.