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02 Dropouts - every 24 hours

GT1

Member
Hi all and thank you in advance for your help.

We live in a rural area and when we had a fixed line ISP the max speed was ~0.5MB.

Last December we decided to go 4G with a Zyxel router (LTE7490-M904) and an O2 sim with unlimited data.

in turn this connects to a Draytek router (we had used this for the fixed line) and then onto a Ubiquiti switch and AP's. (we have also had it connected directly through the Ubiquiti switch and whilst it works it still hangs)

All was OK for a while but now we can guarantee a "hang" once every 24 hours and the exact time of that hang seems to be relatively fixed, or at least fixed for a few days, for example at the moment it is around 11:30 AM every day.

Of course when we are all out we cant be sure that the hand occurs at that time everyday but we often work form home and did go through a phase when it hung at 21:30 every night for weeks.

When it hangs all service stops including wired and wifi so we are confident it isn't an AP issue, and unplugging the POE supply and then plugging it back in clears it every time.

We did have a couple of occasions when browsing that required us to "prove we are not a robot" so just wondering if O2 places a restriction on traffic to a 4G device if it does "X"MB over 24 hours?

Any help / advice or guidance gratefully received!

Many Thanks

Griff
 
That’s a nice cat18 outdoor router.
What apn are you using, what firmware is on the zyxel, and where in the country are you?

I take it the zyxel is in bridge mode and you’re not double nat?
 
Hi and thank you for replying,

The APN is set to "auto",

Firmware "V1.00(ABFR.4)C0" and not showing any upgrades

In North Yorkshire

yes set to Bridge mode but you have lost me at "double nat" im afraid !

Hope that helps ?
 
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If it's O2 it will be behind CGNAT anyway won't it ? O2 does have a cap but I think they contact you about it (I can only go on what i've read as I don't have an unlimited O2 contract).

FYI double NAT would be where you had a router doing NAT (i.e. translating the public IP to an internal one) and then you had another router behind that doing NAT again.
 
Yes as I understand it once it has reached the O2 mast and beyond it will go to CGNAT to convert to V6 ?

Ah yes, understood, as the Zyxel is in bridge then I'm fairly sure that the Draytek is doing that and the DHCP management

Unless there are any golden suggestions next step will be to remove the Draytek and have eth Zyxel do the DHCP

largely amateur here playing with things way beyond my capability so hope it all works out!

cheer s
 
O2's network status checker allows you to register for updates.


I get texts regularly advising on mast upgrades, outages and problems in my local area.

Latest firmware is from April this year:

Modifications in V1.00(ABQY.3)C0
[Know defects]
N/A
[Feature Enhancement/Configuration Changing]
1. Add the solution of slow webpage loading
2. Upgrade Dnsmasq Version to 2.78
3. Upgrade OpenSSL Version to 1.1.1b
4. Add DHCP relay feature
5. TR-069 is disabled by default

[Fixed Defects]
1. MTK WiFi Frag Defrag attack

If you're on ABFR, and the latest is ABQY, you're on a really old firmware version.

I'd update ASAP, as your outages could be vulnerability attacks.
 
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