aragno's profile

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Wed, Jan 6, 2021 10:00 PM

Motorola MB7621 and Amplifi HD router

I am new to xfinity service.

I have been using my Ubiquiti Amplifi HD router for several years without much issue.

I am using a brand new Motorola MB7621 modem.

My service was activated a few hours ago and via ethernet cable between modem and computer, the itnernet is working just fine.

 

I reset my AmplifiHD to factory as I was having a problem with the router to obtain an IP address from the modem.

 

The same problem is still persisting where I am not getting an IP address issued to my router.

 

My router can be setup for DHCP, PPOE, or Static. I believe xfinity is DHCP but I would like the router to get an IP address first.

 

Anyone have firsthand experience with Amplifi HD systems and this MB7621 modem on xfinity? I believe it should be fairly "plug and play" and not be this difficult.

 

There is virtually no "settings" in the modem so putting it in "bridge mode" isn't a solution as the device is strictly a modem.

 

 

Responses

EG

Expert

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87.1K Messages

5 m ago


@aragno wrote:

 

My router can be setup for DHCP, PPOE, or Static. I believe xfinity is DHCP but I would like the router to get an IP address first.

 

DHCP is the correct setting.


FWIW, you need to power cycle/re-boot the cable modem each and every time that you change the device that is being directly connected to it in order for that device to be able to get an internet connection.


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