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In one classroom with 14 Chromebooks connecting to a wireless Ubiquiti access point we keep losing access to the internet. They stay connected to the AP but when trying to open an online test or any other website they get an "Internet not Available" error message. When I investigated the problem and I look at the IP addresses the Chromebooks are getting they are all in the 192.168.1.xxx range. If I tell them to forget the current network, restart them, reconnect them and then give them a static IP address in the 192.168.0.xxx range they will then connect to the internet. The problem is, when rebooted the Chromebooks will again lose internet connection even with the static IP address. I again disconnect them from the AP, restart and then reconnect then and they will have Internet access. This is an unhandy work-around especially for any teachers who need the Chromebooks for testing or other online activities. Our DHCP address pool is from 192.168.0.1 to 192.168.1.254. The AP IP address is 192.168.1.232. Plus, this is a recent problem and is only happening with this set of chromebooks. If we bring in chromebooks from another classroom they connect to the same AP and to the internet. I have swapped APs with another classroom to no avail. Regular laptops connect to the same AP with no issue. Please advise. I am about to pull out what little hair I have left.
Thank you.
Robert
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That is a large DHCP pool. How many devices do you really expect to need to support?
The WAP and the internet router need to be in the same subnet as all of the chromebooks, but you also need to make sure that those addresses are not given out by DHCP. Unless you've made an exception in the DHCP router, it is possible that addresses can be assigned that conflict with either of those two devices.
As a minimum, I'd change the DHCP range to 192.168.0.20-192.168.1.254, assign the internet router/default gateway with 192.168.0.1 and the WAP at 192.168.0.5. If you have any devices set up with static IPs, you'll want to make sure that their default gateway is set to 192.168.0.1.
On a side note, if you choose to start over, I'd avoid using 192.168.0.x and 192.168.1.x. They are far too common and can make remote VPN connections more complicated.
I know at one point there was a batch of ChromeBooks w/ a faulty wireless chip in them, so it could be that.
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How many devices do you really expect to need to support? 300 - 400 depending on the day.
assign the internet router/default gateway with 192.168.0.1 - I really do not want to do this. The default gateway on the router has been 192.168.0.250 for over 15 years with no problems. These Chromebooks all functioned properly until about 2 weeks ago and then suddenly this problem began. Our DHCP server has an IP address of 192.168.0.3, subnet mask is 255.255.254.0 and default gateway is 192.168.0.250.
Could it have something to do w/ the firmware/version of these particular ChromeBooks? - I have reinstalled the OS on every single one of these chromebooks and verified they are up-to-date.
Again, this is only happening in one classroom with one set of chromebooks. These devices all worked properly until a couple weeks ago. They all show connection to the AP with a strong signal.
Probably there is little hope of obtaining logging from the chromebooks, try if you can find data from there.
Also check logs on the AP's there should be some info on WHY, or at least which end gives up on the connection.
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"DHCP server has an IP address of 192.168.0.3 "
"AP IP address is 192.168.1.232 "
"Our DHCP address pool is from 192.168.0.1 to 192.168.1.254"
Unless you have set up exclusions for those three addresses, you have a potential issue with DHCP issuing addresses that conflict with those. That may not be the issue right now (a check of what DHCP addresses will answer that) but one to remedy to avoid future problems.
Have you checked the IP information on any of the chromebooks while the problem is occurring? That could be VERY useful. This should show you how: https://www.dell.com/support/kbdoc/en-us/000147163/how-to-view-chromebook-network-properties-in-the-chrome-operating-system
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Networking
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Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.
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