NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

NetworkGuy36's avatar
NetworkGuy36
Aspirant
Jan 04, 2016
Solved

R7000 DHCP not working after reboot

Hi,

 

I have a really weird issue.

 

I have a the following setup:

 

Internet: Comcast

Cable Model: Motorola SB6141  Hardware V7.0  Firmware: SB_KOMODO-1.0.6.14-SCM03-NOSH

Router: Nighthawk R7000  Firmware: V1.0.3.80_1.1.38 

Switch:  Netgear GS108 Switch

 

Here is what happened, my Wink Hub was not responding and one of the suggestions was to re-boot the router, which I did. That did not work, so I decided to wait until tomorrow before contacting their support. A short while later, the PC I was working on lost connectivity. I ended up re-booting the PC but still had no Internet access. After a lot of research, I discovered the following:

 

The IP address range from the R7000 was 192.168.1.2 to 192.168.1.255, but my IP address was 192.168.100.16.

 

My IP address was being assigned by the SB6141, which has a built in DHCP server. (There is not way to turn it off.) But it has never been a problem before. I was able to get back online by assigning a specific IP address, DSN and Gateway in my PC's ethernet adapter, but I have never had to do this before.

 

DHCP is enable in the router, but it is not assigning IP addresses.

 

Suggestions?

 

Thanks,

John

Troubleshooting
  • NetworkGuy36's avatar
    NetworkGuy36
    Jan 04, 2016

    Problem Solved:

     

    I am still not sure what caused it or what fixed it.

     

    I power cycled the entire network and all of the attached devices. Turned everything off and the started powering up from the Cable Moden inward. When I was finished everything was back to normal.

     

    I power cycled the modem and router yesterday with no effect. Not sure why reseting the entire network made a difference, but it did.

     

    Thanks,

    John

4 Replies

  • netwrks's avatar
    netwrks
    Master
    Jan 04, 2016

    If you can't set the SB6141 to bridge mode, then set the 7000 to AP mode.

      • Retired_Member's avatar
        Retired_Member
        Jan 04, 2016
        NetworkGuy36 wrote:

        Not possible, the SB6141 is ONLY a DHCP server and not a router

        Connect modem to PC with PC lan set to DHCP Reboot modem and PC this should assign a public IP to the PC.

         

        Push router reset until power LED flashes this will erase all user settings, connect PC to lan port reboot PC. Should get a 192.168.1.xxx IP

         

        Log in to router 192.168.1.1  got to setup.....internet setup.......USE PC MAC ADDRESS

         

        connect modem to router WAN port  reboot router follow the directions