My network has lag spikes lasting for a few seconds every 7.5 mins. The spikes also effect any other computer connected connected to my wirless router at the time. My wife has to connect her laptop via a cable to prevent the lag causing problems when she's VPNing into her work.
If I switch my PC off the problem goes away!
I've got an Edimax 7728ln 802.11n wireless card and Speedtouch 585v7 (I'm with Be)
Updated the drivers from Edimax Ralink website: 220.127.116.11 (it does say 18.104.22.168 in devices properties though)
I've used the driver from the chipset manufacturer Ralink, the RT2860 driver ver. 22.214.171.124 seems to have improved the situation somewhat.
WLAN Optimizer doesn't seem to be helping
What can I do?
I've written a program that logs the times the network slows down so I'm pretty sure it's happening at multiples of 150 seconds with significant (4-6 pings in excess of 1000ms with a least one time-out) incidents every 3rd time.
If the computer is on, my wife's laptop (or my work laptop) will be effected by the same latency. It's really annoying when using RDP to connect to work's terminal server! But it is still annoying!
I get a load of these SSDP Notify being sent
7031 755.714745 192.168.1.69 126.96.36.199 SSDP NOTIFY * HTTP/1.1 7032 755.834765 192.168.1.69 188.8.131.52 SSDP NOTIFY * HTTP/1.1 7033 755.856770 192.168.1.69 184.108.40.206 SSDP NOTIFY * HTTP/1.1 7034 756.061745 192.168.1.69 220.127.116.11 SSDP NOTIFY * HTTP/1.1 ....
(about 6 or 7 sprinkled between each delayed
ECHO (ping) Request/Reply
Awesome, with wireshark I could pretty much eliminate all network traffic other than ICMP stuff and these annoying SSDP messages, wich I'm pretty positive are causing the problems.
I've updated the driver on my WLAN card, to what looks like a newer driver directly from the chipset manufactuer RALink and that seems to have improved the situation somewhat, the spikes now are only about 200-500ms each no time-outs.
I'm also guessing it maybe the router that is having the problem with these packets, not my PC as they affect any computer connected to the WLAN interface of the router, LAN connected computers aren't affected!