WR1043ND v4 Slow WAN -> LAN Whilst Synced @100Mbps

Username: SpiderVice

Origin: https://bugs.openwrt.org/index.php?do=details&task_id=362

Recently, builds for this device have started to be made, but there’s a very peculiar issue I’ve found. Any client that is synced to 100 Mbps (and not 1 Gbps, in my case due to incapacity of the cable used) gets their speed seemingly throttled to 20-30 Mbps. My connection is a 100 Mbps connection, and I get full 95 Mbps (Hardware NAT disabled) on the stock firmware, and I also get this speed on LEDE

only if I use a 1 Gbps link

.

Speedtest on the stock firmware with the 100 Mbps link:

http://www.speedtest.net/result/5904234776.png

Speedtest on the latest LEDE with the 100 Mbps link:

http://www.speedtest.net/result/5915271748.png

1 Gbps links get full speed, as expected.

If I perform a transfer from LAN to LAN, I get full speed on the 100 Mbps link. The resulting speed graph is not a hard-cap, but seemingly some kind of throttle/flow control being applied. I cannot change any settings with ethtool as it throws ‘not supported’ errors.

Only happens

WAN

LAN connections.

Nothing of interest in the logs, unless I can somehow get a more verbose log of the connection status.