Problem Connecting Airport Extreme to Motorola SB6141

Correct setting for the AirPort with a Motorola SB6141 is DHCP and NAT.....which is the default setting for the AirPort.....(not Off (Bridge mode).

DNS settings should be automatically assigned when you make the connection with TWC.

Whenever you make a modem change, it is always a good idea to first reset the AirPort Extreme back to factory default settings.....to completely clear out any old...and possibly conflicting settings....and then configure the device again.

Well, Bob, my Airport Utility had the correct setting as shown in your screen shot. I went ahead and did a reconfiguration anyway as you suggested as I hadn't done one after the new modem or after the OS "upgrades."

It seems to be fine now. I have been so plagued by this issue for so long that I feel no real confidence that it will last, but I am hopeful. . . . I do appreciate your answer and clear guidance. You moved this further than Apple did. Thanks!

Tubostar,

Thanks for the reply via the new post I made as per your suggestion.

I had the same issue with my older Airport Extreme, Time Warner was absolutely no help and wanted to keep resetting my modem, seemed useless after the third time so I started messing around with the settings for my AE. I have had zero issues with my connection after I disabled IPV6 connection sharing under internet then advanced. I hope this helps someone!

Bob Timmons,

I am a novice about computers in general and I think I am having a possibly similar problem, with a twist. I have Comcast cable internet connected to a Motorola sb6141 modem connected to the wan port of an old Telco Systems--Access AC-211 VoIP Gateway (aka a Sunrocket "gizmo" ). From the lan port of the voip I have it connected to the wan port of an Apple airport extreme model A1408 router. I cancelled my Voip a while back and started noticing that my internet access was getting slower and slower. I don't have cable tv only internet. I have a Roku ethernet connected to the router. Sometimes netflix shows would drop and simple web pages won't load or are very slow on wifi connections. I thought maybe the voip "gizmo" should be disconnected as it might be causing the slowness. Whenever I disconnect it and connect the modem directly to the router, I lose the green light on the router and my wifi. It switches between green and flashing amber then back to green, repeatedly. I tried switching from bridge mode to dhcp and nat in the airport utility but that didn't work.

If Bob or any of you out there know a solution, this novice would sure appreciate any help.

Thanks

Bob, thanks so much. I swapped out my TWC modem for a Motorola SB6183. I could connect my Mac Pro to the internet via hardwire to my 2014 Airport Extreme, but I still had a flashing amber light and no IP address on the Extreme, and no WiFi. I tried a factory reset with no luck. I have no real knowledge of network setup, so I would have had no idea where to even start without your screen shot. The Network / Router Mode had defaulted to Off (Bridge Mode), and changing it back to DHCP and NAT, then rebooting the router and the Extreme fixed it.

I just bought a Netgear CMD31T DOCSYS 3.0 modem and had a similar problem getting it to work with my airport extreme. I tried reconnecting several times with and without the aid of the Cox Cable techs over the phone, and though the modem was clearly working, the airport would not lock in the internet and the airport utility was telling me that I had to switch the airport extreme to bridge mode, which I never did. There appear to be several threads of similar sad stories and I was about to give up and return the modem. My last shot was trying Bob Timmons instructions above, and I succeeded!!! I am not sure I actually did a correct reset of the airport extreme, but I definitely followed the timing -- modem off for 30 minutes, etc. The reason I didn't think I reset correctly was that my old network name and password were still present when the system succeeded. In any case it worked, and my network is zooming.

I tried a 6th gen AE (ME918LL/A, model A1521) with the SB6141 on Comcast and it won't connect. The light on the AE just blinks amber forever. I can connect my MBP directly to the 6141 via Ethernet and it works fine, but it will not work with the AE. Any suggestions for a good modem that work with Comcast and the 6th gen AE?

FWIW:

see if you can connect to 192.168.100.1. this is the default address of the 6141.

I found that the 6141 will provide a DHCP address -IF- it does not sync correctly with your cable provider.

I have not found a way of turning this off and I cannot imagine why this should be considered a "feature".

Sometimes engineers are on drugs.

My AEX was getting a DHCP address from the 6141 which then prevented it from connecting to my cable provider.

When I plugged my laptop into the 6141, it was able to obtain an DHCP address from the cable provider.

After letting it "stabilize" for about 30 minutes, when I moved the ethernet cable back to the AEX, the AEX was finally able to get a DHCP address from the cable provider.

My 6141 is working just fine at the moment. I have not figured out how to turn of this "feature".

Just wanted to post saying thank you to Bob Timmons. Making this one change to my Airport Express Time Capsule fixed my issues completely. It was simply setting the router mode from "Off" to "DHCP and NAT." This was after wasting 45 minutes with Comcast support trying to get it to work, and actually returning my SB6141 modem for another one since the Comcast support agent said it must be broken, and that was why it wasn't working with my AEX.

I have the same problem and unable to get SB6141 to link to Airport. Plug old modem back in and works just fine. Frustrating!