@Ethan-TP Hey there, adding you to this matter. Thanks :)

  @Ethan-TP 

Hi there,

I wanted to join in on this one please:

I have an ER8411 v1.0 (firmware v1.3.2) with the OC200 controller (v1.36.7), and 2 x 2008P and 1 x 2008 switched with 3 EAPs.

My wife is working from home on a PC laptop which connects to her corporate IT network via Zscaler It would appear (along with some internet searches, HERE and HERE for example ) that the functionality of zscaler has been broken with the introduction of firmwares above v1.2.3. I am not sure which broke it v1.3.1 or v1.3.2 - which I can currently running.

I have verified this by connecting the laptop to other Internet sourced and it’s ONLY when connected to our Omada network that things started going wrong (it was fine before v1.3.1 from what i remeber, which tallys with comments on this tread). Zscaler will connect, however is VERY slow and will not load certain pages/website/applications.

I was looking at the option of down grading my firmware back to v1.2.3 to try and fix this issue.. however I don’t know the effect this would have on my current settings and set up.

I know there is now v1.3.5 and v1.3.6 available but it is warned that there is no way back once these are installed, so if they don’t fix the issue, there is no way for me to get back to v1.2.3 which is where we believe it was working.

As we both work from home, it is critical that I don’t break our internet connection and lose the use of the router.

If I upgrade to the latest firmware, are you able to tell me if this will fix the issue we are having that was caused by either v1.3.1 or v1.3.2?

Or, if upgrading the firmware to v1.3.6 doesn’t fix the problem, it is possible to later downgrade to v1.2.3, after installing v1.3.6?

I am not able to afford to purchase another ER8411 for testing purposes.

We are surprised that the firmware upgrade is stopping zscaler from working correctly. Your help would be hugely appreciated

Cheers

  @Ethan-TP 

Hi,

thanks for your reply, to answer your questions....

So the rest of the network, computers etc seem unaffected, it's only when zscaler is used to connect to the corporate remote system that the unpredictable behavior kicks in.

We've not extensively done speed tests for this, however, when zscaler is connected, internet access is extremely slow or non existent. Apps like Zoom very rarely, normally never properly connect and therefore are unusable. Webpages take forever to load and more often than not time-out. Microsoft Teams seems to work, but a little sporadically.

When the same PC is connected to any other network, including mobile phone tethering (as a test) it all works ok. and as far as we can remember before the firmware upgrade (either to v1.3.1 or v1.3.2) it was also working fine. Also, when the machine is on the work site, connected directly, though still using zscaler, all works well.

This has been happening now for months, and it's only now, after some internet searching that we've landed on the firmware as the culprit. We changed cables, switches, vlans etc and there's been no difference. So yes, everything has been restarted, and rebooted over that time.

We've not got zscaler on any other of your computer, purely because it's installed by IT at my wife's company, however, we know that her laptop works fine connected to other networks, so isn't the laptop that's the issue.

Hope that helps a little?