Keep in mind that LAN transfers only have to do switching, not routing. Packet switching is easy; routing is a bit harder. I did some research. It appears th

Keep in mind that LAN transfers only have to do switching, not routing. Packet switching is easy; routing is a bit harder. I did some research. It appears the 7800DXL uses a Broadcom 6361 (http://bc.whirlpool.net.au/bc/hardware/?action=h_view&model_id=1429 http://bc.whirlpool.net.au/bc/hardware/?action=h_view&model_...). According to the OpenWRT wiki, this is a 400MHz dual-core chip (http://wiki.openwrt.org/doc/hardware/soc/soc.broadcom.bcm63xx http://wiki.openwrt.org/doc/hardware/soc/soc.broadcom.bcm63x...). I would not expect you to get full gigabit WAN-to-LAN. The highest end routers these days are running dual-cores at 800MHz-1GHz and they are barely up to 1Gbps. For example, the Netgear R7000 runs a dual-core CPU at 1GHz and only makes it up to 930Mbps (http://www.smallnetbuilder.com/wireless/wireless-reviews/32239-ac1900-first-look-netgear-r7000-a-asus-rt-ac68u?showall=&start=1 http://www.smallnetbuilder.com/wireless/wireless-reviews/322...). Also, maybe an easy way to test this would be to disconnect your router and put another PC on the WAN port. You can then run iperf between the WAN port and another computer on a LAN port. That should show you the theoretical peak performance doing WAN-to-LAN. Doesn't help you prove your actual connection speeds, but it will give you an idea of what the router is actually capable of.