Is the Matrix21 test correct?

[konikofi]

I ran the Matrix21 server/client router test, and the WAN to LAN simultaneous connections results on my Netgear FVS114 far exceeded the 38 reported using the old router test method. How is this possible?

I ran the test 3 times, power-cycling the router between tests, and got the same result:

Send UDP packets from 192.168.0.5(20000+) to 172.16.0.1(12345)
45659 WinSock Error# function: Bind(), error code:10048

Any explanation on why this test reports 45000+ simultaneous connections? If I sniff one of the ports during the test, wireshark shows that there are indeed 45000+ UDP connections, but each one has a very short duration. I would expect a simultaneous connections test to setup a connection, pass traffic, setup another connection, pass traffic and repeat while still maintaining the previously setup connections until the router runs out of memory and cannot setup anymore connections. I don't think Matrix21 is doing this, but I may be wrong. Any help on this would be appreciated...thx!

 

[thiggins]

The Matrix21 test does not send traffic, where the IxChariot test did. As you saw, all it does is have the client app open connections on successive ports until it no longer receives a response from the server app.

If the router has short session time, then it's possible that it closes sessions and has them available to be opened with higher port numbers. I saw this mechanism in play with the D-Link DIR-655 with its Ubicom QoS enabled. Perhaps something similar is at play in the FVS114.

I disable QoS features when I run the test. I also sometimes disable SPI, if the router allows, if the router won't run the test with it enabled.

 

[danwarne]

Where can I actually download the Matrix 21 server.exe and client.exe tools? Google isn't turning up much for me.

 

[thiggins]

http://www.smallnetbuilder.com/mydownloads/max_session_tool.zip