WRT54GP2 has very poor WAN-to-LAN throughput for TCP

[TBarregren]

Hi,

I have problem with a Linksys WRT54GP2 router, which slows down the WAN-to-LAN throughput from expected 2 Mbit/s to only 200-500 kbit/s. That is to say, the WLAN-to-LAN throughput for TCP is only 10-25% of the WLAN-to-LAN throughput for UDP.

When replacing Linksys WRT54GP2 with a D-Link DI-614+ router, I measure 2,0 Mbit/s WLAN-to-LAN throughput for TCP as expected. Thats is of course also true when connecting directly to the modem.

Thus, something is wrong with my Linksys WRT54GP2 router. What can I do to solve this problem?

I have measured the throughput with TPTest 3.0 <

http://tptest.sourceforge.net/>.

The router is connected to my ISP through a Linksys ADSL2MUE modem. The modem runs in "Bridge Mode Only" with dynamic IP. I have also tried the "RFC 1483 Bridge" mode with similar results.

What can I do to solve this problem?

Regards,
Thomas