2 Replies Latest reply on Aug 4, 2011 11:45 AM by mtuma

    Setting TCP Window Size for High Bandwidth - High Latency Links

      We have an Enterprise Firewall 1100 protecting a LAN environment from a WAN that uses a sat link.

       

      The sat link is a guranteed 2Mbps both ways with a roundtrip delay of approx 600ms.

      We are experiencing slow http downloads in the order of 4.5KB/s.

       

      It would appear that if you tune the TCP window size to be higher than normal then you can acheive much higher download speeds.

       

      Question is can you increase the TCP window size for the firewall and if so how?

       

      Thanks