Issue with WiFi signals - erratic ping time

[john9527]

You may want to try this.....
http://www.snbforums.com/threads/fix-for-erratic-windows-7-ping.23092/

 

[sfx2000]

Try to localize the issue - go to a single Router/AP temporarily, taking the other out of the equation...

On the single router - check both Wifi and Ethernet to see if the dropouts continue - if so, you know where the problem is... and if the problem goes away, then hook Router/AP2 back up, and try things over the wire, if problem exists, the Problem is Router/AP2, if the problem isn't present over ethernet, then it's a wireless issue, and that could be the router settings perhaps, or the client adapter in your PC...

 

[stevech]

Could be that the client device is using the WiFi sleeping option to conserve power. Some laptops or handhelds go to this mode due to inactivity. They wake up every x times the DTIM interval (typ. 0.1 sec) and determine if the access device has data pending.

 

[sfx2000]

Could be that the client device is using the WiFi sleeping option to conserve power. Some laptops or handhelds go to this mode due to inactivity. They wake up every x times the DTIM interval (typ. 0.1 sec) and determine if the access device has data pending.

Could be - but he's generating constant traffic - but who knows...

 

[System Error Message]

Try with another wifi devices. I would suggest against ping tests from a phone unless you've disabled the power savings for wifi otherwise you will be getting 50-100ms for when you should be getting 1ms.
On my asus AC68U i get <1ms latency on wifi AC so if you need to upgrade or swap out your routers, you should consider getting one that has many advanced options.

 

[stevech]

And has been said... use different channels, and not adjacent channels, in case there is a non-WiFi signal interfering, a berzerk WiFi thing nearby, or a big bandwidth hog next door.

 

[Akbar Munir]

Some more things to try that might make a little difference but probably won't completely solve your issue.

Try disabling Short Guard Interval...... and try disabling Packet Coalescing (if it has the option) and set roaming aggressiveness to lowest in adapter settings of your laptop as well. Should have mentioned this before other things but try manually fixing channels instead of having auto mode in the router and set the Beacon Interval to 50.

By the way can you list your WiFi clients and type of connection it has bgn etc, it may or may not help but still. Also are there any other electronics next to the router?

Have disabled SGI and set the beacon interval to 50. Did not find the Packet Coalescing option in the router settings. Have also changed the roaming aggressiveness to Lowest in adapter settings. The channel is also set to 11 as manual, and removed from auto setting. The results still remain the same. Have given a graph of ping times below.

The Wifi stations associated with the router only give the MAC address and do not show the type of the client, like b, g or n. I have given the snapshot below. Currently there re are 5 clients associated. Out of these, only 1 is a lpatop and all others are smartphone or tablets, a mix of Android and iOS. There are wired clients attached to the AP (W2) router too.

The router is placed directly under the LED TV. The TV is connected to the W2 router through wired connection. The TV also has the Google Chromecast v1, which connects to the W2 router through WiFi. Right next to router, is IP TV STB placed. The wall of the room shares it with dry kitchen, which houses 3 x refrigerators, directly behind the wall on which TV is mounted. Do you think the location of the WiFi router is playing a major role in this? I will also try taking the router to another location, with static IP of 192.168.5.2, and simply pinging it from there, to find out if the issue is with the location or something else.

 

[avtella]

My apologies, I intended to say Packet Coalescing is/should be in the laptop adapter settings.

And yes try moving the router, the current location seems pretty congested, this could very well be your culprit.

 

[netwrks]

Have disabled SGI and set the beacon interval to 50. Did not find the Packet Coalescing option in the router settings. Have also changed the roaming aggressiveness to Lowest in adapter settings. The channel is also set to 11 as manual, and removed from auto setting. The results still remain the same. Have given a graph of ping times below.

The Wifi stations associated with the router only give the MAC address and do not show the type of the client, like b, g or n. I have given the snapshot below. Currently there re are 5 clients associated. Out of these, only 1 is a lpatop and all others are smartphone or tablets, a mix of Android and iOS. There are wired clients attached to the AP (W2) router too.

The router is placed directly under the LED TV. The TV is connected to the W2 router through wired connection. The TV also has the Google Chromecast v1, which connects to the W2 router through WiFi. Right next to router, is IP TV STB placed. The wall of the room shares it with dry kitchen, which houses 3 x refrigerators, directly behind the wall on which TV is mounted. Do you think the location of the WiFi router is playing a major role in this? I will also try taking the router to another location, with static IP of 192.168.5.2, and simply pinging it from there, to find out if the issue is with the location or something else.

Sounds like lots of potential interference. Try and locate your router UP and AWAY from TV and other interference.
Question, have you done any testing directly connected to the router and AP, instead just wireless? What cable are you using between the router and AP?

 

[Akbar Munir]

Sounds like lots of potential interference. Try and locate your router UP and AWAY from TV and other interference.
Question, have you done any testing directly connected to the router and AP, instead just wireless? What cable are you using between the router and AP?

I tried pinging the router away from TV location, and it still gave me the same results.

I am using a CAT5 cable, with length of almost 130 feet.

 

[netwrks]

Have you tired a different Ethernet cable between router and AP? Also, let's not rule out that there could be a firmware issue on the ISP provided router modem combo. A bunch of user's went through the exact same thing with ISP provided modem / router where I am. Crappy firmware. Bridging the ISP provided router / modem did fix some of the problems, but I would check with your ISP, or, have a look at their forum, if they have one.

 

[Akbar Munir]

Have you tired a different Ethernet cable between router and AP? Also, let's not rule out that there could be a firmware issue on the ISP provided router modem combo. A bunch of user's went through the exact same thing with ISP provided modem / router where I am. Crappy firmware. Bridging the ISP provided router / modem did fix some of the problems, but I would check with your ISP, or, have a look at their forum, if they have one.

The erratic ping that I get is for the LAN interface on the AP. I think it does not go to the router for this ping, rather loop back from AP. So this means that router should not have an impact on this.

 

[sfx2000]

One other thing to check - most folks have been focused on the router/AP's - have you considered the client?

Especially driver version for the wireless card and power management.. depending on the OS in use, and the drivers, one can see performance issues like this...