NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Nighthawk 7800 & Virgin Superhub 3
Hi all,
I've had this issue now since I hooked up the Nighthawk and I was wondering if anyone has experienced the same issue.
I have the Virgin Media superhub 3 (which is in modem mode) connected to my Nighthawk 7800. Everything appears to work fine, all connected devices have a great connection to the internet until an exact time of the week. It appears the the Nighthawk is requesting a new lease from the modem every 7 days. 80% of the time when it does this it doesnt "fully" reconnect to the internet. To explain further it appears that wifi connected devices cannot establish and internet connection but wired ones can, odd! Restarting the router fixes this issue.
Now it was my understanding that when in modem mode the superhub would just pass the internet to the router, which it seems to kinda do but with a lease that expires every 7 days (please note that the lease the modem has with virgin media has not expired since i set the device up, so its not like VM are requesting new leases).
I've tried a few things:
Asking VM if they need to whitelist the device/mac of the router (they just did a restart at their end <rolls eyes>)
telling the router to use the modems mac address
telling the router to use one of my devices mac address
restarting both devices in different combinations
Yet nothing has resolved the issue.
Any help would be appreciated.
13 Replies
I understand SHv3 is device leased by VM and manufactured by Arris.
#1. when the device is in Modem modem, please make ONLY and ONLY R7800 is attached to it since Virgin Media would set MAX_CPE=1 in the DOCSIS config file (I assume you are already doing this)
#2. you need to figure out, whether modem DHCP lease is expiring or Router's WAN IP DHCP lease is expiring.
#3. you mentioned wired devices have internet access but wireless do not. You may want to check ping and traceroute on wired and wireless devices when this happens to see and compare both the responses.
#4. Alternatively, you can try setting NightHawk in AP mode (not desirable) but atleast see if you can run beyond 7 days.
btw, this is Cable Modem Forum, you may want to post on Router forum as well.
Thank you for your reply.
#1. when the device is in Modem modem, please make ONLY and ONLY R7800 is attached to it since Virgin Media would set MAX_CPE=1 in the DOCSIS config file (I assume you are already doing this).Yes. I can confirm that only the router is connected to the SHv3. Only one port is active on the SHv3 hub when it is in modem mode.
#2. you need to figure out, whether modem DHCP lease is expiring or Router's WAN IP DHCP lease is expiring.
I believe it is the Router's WAN IP DHCP lease that is expiring. Is there a way to extend this?
#3. you mentioned wired devices have internet access but wireless do not. You may want to check ping and traceroute on wired and wireless devices when this happens to see and compare both the responses.
I'll look into this on Wednesday when the lease renews :-\
#4. Alternatively, you can try setting NightHawk in AP mode (not desirable) but atleast see if you can run beyond 7 days.
I've considered this but like you say its not disirable.It sounds like you might be right in saying it might be the routers wan thats lease is expiring. Do you know how to extend this time?
Lease time is decided by Virgin Media as they are the one who issued the DHCP IP.
router cannot increase the lease. when the T1/T2 timer expires, Router is supposed to renew the lease.
