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[Weaver]

I have obtained a ZyXEL VMG 1312-B10A modem-router from an eBay seller. Can not get it to respond at all to 192.168.1.1 not even to pings ? I’ve tried the usual pin reset procedure.

Is there anything that I should be doing, or have I just been sold a duff unit?

[hacktrix2006]

There is a reset hole on the router, try using the 30/30 rule on it, else you might just find it could be using the following IP's


192.168.0.1
192.168.0.254
192.168.1.254

These are the most common ones.

[Weaver]

I must have failed to reset it in that case, what’s the 30-30 rule exactly, can’t remember the precise details. I will need to give my dear wife some very precise instructions as I won’t be doing it myself. She has been very good and has given it two rounds of pin-in-hole carefully.

[Weaver]

No luck with the other addresses either. And I did remember to change my own address appropriately, as needed, to make it an acceptable src-address to reply to, in case the modem has its IPv4 netmask set to /24 instead of /16.

[hacktrix2006]

30/30 trick is the 30 seconds pressing reset button whilst unit is off then you hold it for 30 seconds whilst the unit powers up however it sounds like you have tried that.

Could it be using /20 rather then /24 and /16.

Is it getting any IP from DHCP at all whilst directly connecting to it?



Sent from my LLD-L31 using Tapatalk

[burakkucat]

Is there anything that I should be doing, or have I just been sold a duff unit?

Normally I would recommend opening the case, connecting to the console serial port header-pins, interrupting the boot process and perform a device reset at the CFE> prompt. But before doing that, have you checked to see if the firmware upload page can be accessed? With the device unpowered, press and hold depressed the recessed reset switch. With the other hand, power on the device. Wait until the power LED stops flashing red and becomes solid red, now release the reset switch. Connect to a computer with a static IPv4 address in the 192.168.1.X range allocated (say 192.168.1.100) and with a web-browser, enter 192.168.1.1 into the address bar. Specify an earlier version firmware image, say V1.00(AAJZ.7)C0, and upload it. Once the upload has completed, leave the device alone for say five minutes. Then power-cycle it and re-try to access it as normal.

[banger]

You dont mention if any lights are on. Is the power light red/flashing when you reset it. Not really a lot to go on. 192.168.1.1 is the default address.

[Weaver]

That’s a point, I don’t know much because I have not seen it, but my wife followed the procedure which involves waiting with the pin in the hole and watching LEDs. So there are some LEDs lit. I can get her to take a still photo of the lights with her phone or even film the lights if she can get three hands.

Janet has factory-reset a few of these modems before and she has the instructions from AA’s website to guide her.

If I can’t get anywhere with it then it will go to a good home so that someone can take a look at it. I won’t just bin it. It’s a damned nuisance though, because they were not particularly cheap.

Perhaps I should disconnect the router - a Firebrick - which is a DHCP server, just in case. The modem is plugged into my main switch. I didn’t disconnect my dhcp server last time I factory-reset one of these modems though.

No silly mistakes - I am trying to ping it from an iPad which has an IPv4 address of say 192.168.1.11 or something else within the same /24 and my netmask is set to a /24.

I could perhaps do a traffic capture on this device, a bit of a pain though, but I do have the tools.

Actually, another thing, I cannot see any alien SSID being announced so not encouraging, but of course it could already simply be programmed to be a straight modem or have the wireless NIC set to off.

[Weaver]

@hacktrix I haven’t done the 30 second thing yet. I must do so.

@burrakucat I won’t be able to do the steps requiring dexterity or sitting at a desk, I’m afraid. If it comes to that then I’ll just give the modem away.

I think the AA instructions said to insert the pin after the modem had booted, that doesn’t sound right to me, but that’s what Janet did as she followed those instructions. It’s a wiki on the AA website so it would be very good if someone who knows what they are doing could amend it if it is wrong. Indeed I or anyone else, can change it, and “I could do the edits if someone could go over and check any proposed changes to be applied to it.

Burrakucat’s instructions - to poke the pin in the hole before applying power - are more what I am used to doing and sound correct to me.

I’ll use the two methods today if I can recruit the kindly Mrs Weaver.