Performance and reliability issues with RV042

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by leonpc01, Aug 20, 2006.

  1. leonpc01

    leonpc01 LI Guru Member

    I am having 2 problems with my RV042. Currently it is at firmware

    First problem is speed. WAN1 is connected to Mediacom cable and WAN2 is connected to DSL. Up to Thursday (3 days ago now) WAN1 was rated at 3Mbps but speedtest would show about 4.2 Mbps. I upgraded it to the 10Mbps service and Mediacom told me that I had to use a special SMC8014W cable modem. And after the upgrade everything worked and speedtest actually showed 11Mbps. But since this cble modem has WiFI integrated and it does not work in my configuration i tried to log in and disable the WiFi function. And could not log in. After hours on the phone with support they agreed the modem was bad and to replace it, which happened yesterday. It was replaced with a RCA DCM425 modem (I convinced them that I really do not need the WiFi at the modem). Since then performance behind the RV042 is bad. Speedtest shows 400 kbps consistant. If I test directly attached to the modem I get 11Mbps.

    I have disabled the firewall in the RV042 (no change), Fixed MTU to 1400 (speed went to 1 Mbps). I am thinking about upgrading to firmware but am wondering if I can remove it if I have issues (Well not like I am happy right now!!) Is there any other suggestions... Could it be a problem at the modem even though the speedtests does not suggest it?

    Problem 2 will be addressed in a separate thread once I have this solved.

    Thanks for your help
  2. Toxic

    Toxic Administrator Staff Member

    Upgrade to v1.3.7.9 (in our downloads)
    the main problem is SACKs (Selective Acks) are disabled on the firmware thus more resends and lower throughput.

    setting MTU should be 1492 however i have run an article on setting MTU for individual WANs with DSL/Cable connections as they require different MTUs
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