I use an Asus Rt-N66U router and have the VM router in modem only mode. I had done this for years with the old SH1 but Ive now got issues since Friday's swap to SH3.
I rebooted my router this morning and when it booted up it failed to get an internet connection and complained about a DHCP Failure.
I tried rebooting the Router and the SH3 still the same.I phone VM for help.
Lady to me she would switch SH3 to normal router mode which she did and asked me to test the connection, it worked. At this point she said there is nothing wrong with VM kit, the problem is your kit. I could see her point but why was my kit OK with SH1 for years?
She switched SH3 back to modem only mode and I re-booted my router - still DHCP failure.
The lady then told me to hold the line while she tried something. After a few minutes she came back and asked me to re-boot my router - YES connetction OK -wow.
She said the SH3 was now half way between modem only mode and router mode, I don't understand this. The config page says it is still in modem only mode.
I'm now very nervous about any re-boot to my router.
Just to check; Did you activate it over the phone?
Also, check the firmware version with the sticky in this forum to make sure it's updated properly.
Mine was a bit glitchy when I first used it - I suspect it's because I put it in modem mode before I even connected it to the coax, and after the first few firmware updates/whatever it got confused, but after I re-configured it everything stuck and I think it's been fine since.
Actually, when you say it's not getting DHCP, do you mean the HUB3 isn't get an external-facing address via DHCP?
As I understand it, all SH1 routers are dead after 30th April 2017.
Nope they be dead when the SH2ac goes their will be many years to goes when that happens but the super hub/hub after hub 3 will be seeing the need to upgrade all Docsis 2.0 are what will likely be dead.
When you goto http://192.168.100.1/ and click router stats and then Network Log are there any relevant items?
You can also try turning the Hub3 off for like, 10 minutes, seeing if you can run the phone activation again, then turning it back on again.
Also see if switching it back to router mode, leaving it for 10 minutes, then turning it back to modem mode does anything.
I must admit despite my misgivings that my switch-over was surprisingly smooth; Incidentally, did you have the Hub3 off when you did the phone activation?
Also, on your router, might be worth double-checking the settings, e.g. IP over Ethernet, DHCP & NAT enabled, etc. Another thing that might help is to spoof the MAC address of the modem, but I don't think that is a thing that we still need to do...?
re. the SH1, apparently all Virgin hardware except the SH2ac and SH3 are being obsoleted after April, hence this upgrade. So yeah if you have a modem or SH1 you should be eligible for the free forced upgrade.