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454 posts

Ultimate Geek

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# 177750 13-Aug-2015 09:58
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I know the LFCs hate the idea, however the other day while at work my home link went offline, and didn't come back.    A couple of hours later when I got home the entire network was up, except for the internet.  Given that my general experience with my mikrotik router is stable as hell I rebooted the ONT first to see if it was my issue.  Sure enough my network link came live as soon as it rebooted.

Has anyone else had issues with ONTs, and given that the ONT is a part of the network I can't really replace or have full control of, do I need to put some scripting in place to monitor outages, and auto-reboot it via a IP controlled power socket or similar to try and automatically restore connectivity in future.




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427 posts

Ultimate Geek

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  # 1365336 13-Aug-2015 10:12
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Rather than an IP-controlled power socket, you might be better off with a UPS that allows the same functionality and permits telephone connectivity from the ONT's ATA even when the mains are off.
If your setup doesn't use the ONT's phone with any luck your ONT, router, VoIP gear, &c. are in the same place and can all run off the same UPS



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Ultimate Geek

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  # 1365356 13-Aug-2015 10:40
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All of the places I have a ONT the UPSs I have don't really have the fine control to take down just one device.  The best I can do is 1/2 of the stuff stored in the core of the network, and that's either a server, or PoE switchs and therefore their sub-devices.   I agree the ONT needs to be on a UPS, but I think I can do a better job of targeting it with a IP controlled switch.




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  # 1365358 13-Aug-2015 10:42
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Are you sure the link drop didn't just make the Mikrotik retry the PPPOE connection? (Assuming PPPOE).

The ONT is not a particularly complex device as I understand it.



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Ultimate Geek

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  # 1365365 13-Aug-2015 10:47
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wasabi2k: Are you sure the link drop didn't just make the Mikrotik retry the PPPOE connection? (Assuming PPPOE).


No PPPoE involved with the UFB link in question, no vlans either, just straight DHCP and regular untagged Ethernet.    However you are right, it could have been as simple as effectively unplugging and plugging the Ethernet cable.

If/when it happens again I'll try disabling and re-enabling the interface on the router first as this would be a damn site easier and cheaper to script as a fix :)

edit:
To be honest when it happened I was just pissed I'd been locked out of my network for a couple of hours (and others were also unhappy they'd had their internet cut) so I wanted it back up quickly, so was going for the quick fix, rather than a proper diagnostic.  I should have taken more time to find the exact cause rather than a broad cause.




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  # 1365411 13-Aug-2015 11:26
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qyiet:
wasabi2k: Are you sure the link drop didn't just make the Mikrotik retry the PPPOE connection? (Assuming PPPOE).


No PPPoE involved with the UFB link in question, no vlans either, just straight DHCP and regular untagged Ethernet.    However you are right, it could have been as simple as effectively unplugging and plugging the Ethernet cable.

If/when it happens again I'll try disabling and re-enabling the interface on the router first as this would be a damn site easier and cheaper to script as a fix :)

edit:
To be honest when it happened I was just pissed I'd been locked out of my network for a couple of hours (and others were also unhappy they'd had their internet cut) so I wanted it back up quickly, so was going for the quick fix, rather than a proper diagnostic.  I should have taken more time to find the exact cause rather than a broad cause.


fair enough and understandable. Logs on Mikrotik tend to be pretty good, but if it is straight VLANs I don't really know what would be "reset" by a restart. They are effectively fancy media converters IIRC.

Good luck finding a fix.

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