If you don't have and traffic shaping in play I would check the link is correctly at 1G in each connection in the route. Though if something is linked at 100M that would affect both directions. An asymmetric route somewhere might allow that. Steve

@marzdor said in Not getting same speed as isp router: I unplugged the cable from the WAN and put it in the OPT port and it showed up as 1000 Mmm, that in combination with the fact both ports are configured the same starts to look like a problem with the port.

When you connected the PC directly to Eth1 did it show the expected link speed/duplex? 40Mbps is sufficiently slow to point to a link issue. Steve

@KOM ok thanks will try that