Kitz Forum

Computers & Hardware => Networking => Topic started by: Weaver on November 01, 2021, 12:19:07 AM

Title: Slow WLAN pings
Post by: Weaver on November 01, 2021, 12:19:07 AM
When I ping the IPv4 address of Janetís iPhone from my iPad, both on the same WLAN, the ping times are mostly ~120 ms, occasionally 6 ms. Why so incredibly slow? Is it because my WAP is rubbish?

Itís an 11-year old ZyXEL business grade £300+ ZyXEL NWA 3560-N. I have three of them, two in use, one spare. Slow processor in it possibly, by todayís standards; iirc a MIPS 400MHz CPU. The web UI is noticeably sluggish at times anyway.
Title: Re: Slow WLAN pings
Post by: Alex Atkin UK on November 01, 2021, 01:39:32 AM
Do they perhaps need a regular reboot to clean up the RAM?  Slow UI would certain suggest something is upsetting it.
Title: Re: Slow WLAN pings
Post by: Weaver on November 01, 2021, 01:56:40 AM
Memory leak ? Alloc heaven ?

I think the web UI is always slow 100% of the time, including straight after boot, iirc. I donít recall sometimes thinking that itís better.

Is it possible that the WAP canít cope with the encryption/decryption well ? If with a weedy CPU. Has that ever been heard of?

I havenít found a detailed spec that included a mention of the CPU, itís just that 400 MHz MIPS64 rings a bell.
Title: Re: Slow WLAN pings
Post by: Alex Atkin UK on November 01, 2021, 01:57:52 AM
Always slow I would expect for something like that, but "sluggish at times" is was made me wonder if something is pegging the CPU which would impact ping response too.
Title: Re: Slow WLAN pings
Post by: meritez on November 01, 2021, 07:42:42 AM
Do they perhaps need a regular reboot to clean up the RAM?  Slow UI would certain suggest something is upsetting it.

256MB RAM, 32MB FLASH according to Wiki Devi: https://wikidevi.wi-cat.ru/ZyXEL_NWA3560-N

Is one of the APs acting as the controller for both of the APs?
Title: Re: Slow WLAN pings
Post by: tubaman on November 01, 2021, 10:04:10 AM
If you Google 'iphone ping times' you'll find many reports, some old some new, of inconsistent times like you are seeing.
Title: Re: Slow WLAN pings
Post by: Weaver on November 02, 2021, 10:08:50 PM
No, Iíve set them up independently. With this model, if you set up one as a controller, as believe it wonít also work as an AP. I did have five APs and originally intended to dedicate one.