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Broadband Related => Broadband Hardware => Topic started by: neil on November 01, 2019, 02:41:54 AM

Title: modem reboots automatically
Post by: neil on November 01, 2019, 02:41:54 AM
I have this new problem that i am facing after i started dialing pppoe from my router instead of modem. Every now and then my modem reboots automatically and usually when i am doing something it just rebooted now and that's why i am posting here if someone has any idea.
Title: Re: modem reboots automatically
Post by: Weaver on November 01, 2019, 04:47:02 AM
If your modem is rebooting it’s either a bug in the software or a bad power supply. I would try a very good power supply first: high current rating (‘stiff’ = low internal resistance ), can deliver a fast current surge very quickly.
Title: Re: modem reboots automatically
Post by: neil on November 01, 2019, 10:25:04 AM
If your modem is rebooting it’s either a bug in the software or a bad power supply. I would try a very good power supply first: high current rating (‘stiff’ = low internal resistance ), can deliver a fast current surge very quickly.

modem started rebooting when i started dialing pppoe connection from router it was fine working fine. And how i can check faulty power adapter?
Title: Re: modem reboots automatically
Post by: burakkucat on November 01, 2019, 05:10:17 PM
modem started rebooting when i started dialing pppoe connection from router . . .

So that would be when the data through the modem suddenly increased.

Quote
. . . how i can check faulty power adapter?

Usually by swapping it out and temporarily using a different PSU.
Title: Re: modem reboots automatically
Post by: johnson on November 02, 2019, 10:21:01 AM
I have this new problem that i am facing after i started dialing pppoe from my router instead of modem. Every now and then my modem reboots automatically and usually when i am doing something it just rebooted now and that's why i am posting here if someone has any idea.

Does the actual modem fully reboot, flashing lights and all? Or does the PPPoE session drop and reconnect under load? The latter will look like the modem went down from the router (what router are you using?) stats page, then come up again 10-20 seconds later.

I have to increase the LCP echo interval and threshold in the PPPoE setting of my router to avoid this happening under load, maxing out the connection results in the LCP keep alive packets taking too long or being dropped for some reason.
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:04:57 PM
Does the actual modem fully reboot, flashing lights and all? Or does the PPPoE session drop and reconnect under load? The latter will look like the modem went down from the router (what router are you using?) stats page, then come up again 10-20 seconds later.

I have to increase the LCP echo interval and threshold in the PPPoE setting of my router to avoid this happening under load, maxing out the connection results in the LCP keep alive packets taking too long or being dropped for some reason.
yes only the modem reboots completely all lights off then restarts

i have a tplink archer c7 v1 and i dont know to to set lcp echo interval can you guide and i am going to google it now
Title: Re: modem reboots automatically
Post by: johnson on November 02, 2019, 02:07:34 PM
yes only the modem reboots completely all lights off then restarts

i have a tplink archer c7 v1 and i dont know to to set lcp echo interval can you guide and i am going to google it now

If the modem is actually rebooting then you can ignore what I was talking about.

What modem do you have?
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:08:48 PM
So that would be when the data through the modem suddenly increased.

Usually by swapping it out and temporarily using a different PSU.

yes it has happened like 3 5 times when i was using internet in last 10 days and what you meant by suddenly increased data through modem?
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:10:26 PM
If the modem is actually rebooting then you can ignore what I was talking about.

What modem do you have?
it is from my local isp modem model is fiberhome hg150 ub

people are selling it for 8.4$ lol thats very cheap VDSL2 modem with broadcom chip
here it is https://www.olx.com.pk/item/latest-ptcl-wifi-router-modem-for-ptcl-vdsl2-cable-net-evo-vdsl-iid-1010540972
Title: Re: modem reboots automatically
Post by: johnson on November 02, 2019, 02:20:40 PM
I have zero knowledge of that device, but if its super cheap looking at the PSU is never a bad idea.

If you want to try what I was talking about with LCP echo timeouts - I only mention it as the change from modem to router dialling the PPPoE session then:

On the archer C7, go to "go into router setup > Advanced > Internet > (click modify) then click on Advanced arrow which will reveal some extra features".

There may be something in there you can increase for LCP threshold etc, I use 5 retries and 5 seconds.

Again I'm just guessing because I dont have the hardware.
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:21:48 PM
I have zero knowledge of that device, but if its super cheap looking at the PSU is never a bad idea.

If you want to try what I was talking about with LCP echo timeouts - I only mention it as the change from modem to router dialling the PPPoE session then:

On the archer C7, go to "go into router setup > Advanced > Internet > (click modify) then click on Advanced arrow which will reveal some extra features".

There may be something in there you can increase for LCP threshold etc, I use 5 retries and 5 seconds.

Again I'm just guessing because I dont have the hardware.
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:24:14 PM
advance settings in wan pppoe
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 02:36:12 PM
in my modem system log there is something received from some ip adress

radvd received RA from
Title: Re: modem reboots automatically
Post by: johnson on November 02, 2019, 02:42:49 PM
Like I said I'm flying blind because I dont have that device, I just googled and found someone able to access LCP settings:

Quote
go into router setup > Advanced > Internet > (click modify) then click on Advanced arrow which will reveal some extra features, in there you will find Echo Request Interval
Title: Re: modem reboots automatically
Post by: johnson on November 02, 2019, 02:47:48 PM
in my modem system log there is something received from some ip adress

radvd received RA from

If you are able to access your modem system log (radvd is about IPv6 advertisement) and confirm it is power cycling then dont bother looking into LCP echo settings. The router would not fall over and reboot due to this, I am only talking about the keep alive of the PPPoE session from your router.
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 03:07:36 PM
If you are able to access your modem system log (radvd is about IPv6 advertisement) and confirm it is power cycling then dont bother looking into LCP echo settings. The router would not fall over and reboot due to this, I am only talking about the keep alive of the PPPoE session from your router.

ok when modem rebooted i connected with router and saw wan connection settings there it was saying connected when modem was rebooting and it got new settings when modem was fully on again
Title: Re: modem reboots automatically
Post by: neil on November 02, 2019, 03:12:43 PM
can my isp remotely reboot my modem? there was some issue of high ping a few weeks ago and after reporting it i got a few calls from isp to check and report back. Issue is solved now but they were able to tell my snr and other stuff
Title: Re: modem reboots automatically
Post by: Weaver on November 03, 2019, 07:11:22 AM
ISP may be able to reboot your router remotely, I would think, but I’m not certain, not without re-reading the spec. ISP-remote config (so-called TR-069) is something that can enabled or disabled.
Title: Re: modem reboots automatically
Post by: neil on November 03, 2019, 11:25:53 AM
ISP may be able to reboot your router remotely, I would think, but I’m not certain, not without re-reading the spec. ISP-remote config (so-called TR-069) is something that can enabled or disabled.
yes it is enabled should i disable it?
Title: Re: modem reboots automatically
Post by: Weaver on November 03, 2019, 11:33:19 AM
> Should I disable it?

From the point of view of security you could argue that it is a good idea to disable such things. It also depends on whether or not you trust your isp. If you actually want your isp to be able to reconfigure things, do software updates that kind of thing and do automagic zero-config installations in future then you and they might find it useful. Talk to them if unsure.
Title: Re: modem reboots automatically
Post by: neil on November 03, 2019, 01:32:24 PM
> Should I disable it?

From the point of view of security you could argue that it is a good idea to disable such things. It also depends on whether or not you trust your isp. If you actually want your isp to be able to reconfigure things, do software updates that kind of thing and do automagic zero-config installations in future then you and they might find it useful. Talk to them if unsure.

never heard of software updates from anyone so far from my ISP and for reconfig you can call helpline and they will provide you username and password and i dont think anything else is needed
Title: Re: modem reboots automatically
Post by: Weaver on November 03, 2019, 11:19:05 PM
By the way, I should have clarified: I meant software updates to modem or router.

You might be well advised to turn off the TR-069 then. My ISP, Andrews and Arnold, uses it. I have it turned off on all my modems.
Title: Re: modem reboots automatically
Post by: neil on November 19, 2019, 04:27:33 PM
update here today i tried uploading a file and my rebooted and i tested it 3 times my reboots whenever i try to upload some file to some random website. I tested with online mp4 to mp3 converter my modem rebooted 2 times in a row please help
Title: Re: modem reboots automatically
Post by: neil on November 19, 2019, 04:34:42 PM
rebooted 1 more time during file upload to random mp4 to mp3 convertor
Title: Re: modem reboots automatically
Post by: neil on November 19, 2019, 04:36:38 PM
So that would be when the data through the modem suddenly increased.

Usually by swapping it out and temporarily using a different PSU.

please help my modem reboots whenever i try to upload a file i posted here new message