WLAN Connectivity Problems with Intel 6205 Client in 5Ghz Band

[M_Nees]

After an upgrade of my V4110 from 09.15.05 to V9.21.04 i have problems with Intel 6205 WLAN Clients in 5GHz and AP3825! Either the Client cannot connect to WLAN SSID (in 5GHz) OR it will work fine first but after 3-4 hours the ping latency will increase to 800/900ms. On good days all work fine. Within 2,4 GHz no/never problem occurs. We have the same problem with 9.01.x and 9.12. With 9.15.x the problem never occur / disappear. Now with 9.21 it seems that we have the problem again. WLAN client driver are up to date!

How can i troubleshoot this issue ? Are there any useful log or debug command at EWC ? Is it possible to get a troubleshooting from client site ?

Regards

[Steve_Ballantyn]

Unfortunately I am running the latest and greatest, 10.21.02.0017 and I still have the issue.  Thanks for the feedback though!

[M_Nees]

Hi Steve,

running V9.21.07 and later on customers EWC will avoid the above problems.

Regards,
Matthias

[M_Nees]

A current view regarding this issue:
To solve the problem we have a GTAC case open. We do several Firmware updates in the V9.21 version track! Currently we use V9.21.07 and the problem does not appear the last 2-3 weeks.

It seems that these last V9.21.x Firmware versions are more stable than the first one one of V9.21.x.

Regarding to the WLAN card driver - check version and use the lastest (often the windows guys install the first one they can grab - regardsless to bugs or software quality)!

[Tony1]

Hello Matthias,

do all of you Pings have response times of 800+ msec or only some of them?

For us it looks like that:
Reply from 192.168.0.14: bytes=1500 time=3ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=4ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=4ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=268ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=381ms TTL=125
Request timed out.
Reply from 192.168.0.14: bytes=1500 time=2ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=3ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=3ms TTL=125
Reply from 192.168.0.14: bytes=1500 time=3ms TTL=125

Most of the ping response times are very low <10ms but from time to time 4-5 Pings have very high response time (several hundred msec). For some clients that happens every 30-90 seconds.

I see no relation between 2,4 and 5 GHz band, problem appears in both bands.

Which drivers do you use with your Intel 6205 cards?

[M_Nees]

Is it true that nobody other see the described issue ? Please give me feedback !