A few months ago, I signed up for Clear WiMax. I decided to keep my Bellsouth ADSL connection as I have received notices from Clear that my ‘unlimited’ connection was being over-utilized.
I tried to combine both ADSL and WiMax connections by putting a switch on the WAN port of my router and assigning static IPs to the two connections. By using route tables inside the router I was able to direct high-usage traffic over one connection and route all other traffic over the other. This works good- except that when I put both connections to static IPs, I create double-NATs and I run into issues when trying to open ports to internal systems:
After several failed attempts, I came up with another idea: I disabled DHCP on the WiMax modem, gave it a static IP on my local network and plugged it into the LAN side of my router:
route add –p 188.8.131.52 mask 255.255.255.0 192.168.10.5
route add –p 184.108.40.206 mask 255.255.255.0 192.168.10.5
route add –p 220.127.116.11 mask 255.255.255.0 192.168.10.5
route add –p 18.104.22.168 mask 255.255.255.0 192.168.10.5
These routes direct all outbound traffic for my blackblaze client (22.214.171.124/24, 126.96.36.199/24 and 188.8.131.52/24) and GigaNews (184.108.40.206/24) over the WiMax connection. All other traffic is passed to the default gateway and out to BellSouth.
I am using NetLimiter to monitor my bandwidth usage and restricting GigaNews downloads to about 6Mbps in NewsLeecher (I can still remove the cap and jump up to about 9Mbps if I an in a hurry for a specific article)- which appears to have stopped the ‘excessive usage’ emails/calls from Clear support.
On other hosts on my network I can leave Bellsouth as default or add the above routes if I want to connect in a similar manner.
On another note: the WiMax connection does not appear to be an asymmetrical connection; on my Bellsouth ADSL line, my download bandwidth decreases as my upload bandwidth is utilized- this is not the case with WiMax.
Now I am able to access a cumulative 12Mbps down/1Mbps up on my PC. In theory, I could break out the WiMax mobile and connect it to a 3G router and have a 3rd route- but I am not going to push my luck too much with Clear… :)