GABarber

Q: Airport Extreme and Cox Internet IPv6 Problem

This is a notification to others as well as a question:

 

I have Cox Cable High Speed Internet at several locations using an Airport Extreme 3GB connected as a router to the Cox cable modem.

 

For more than a week we would regularly find in the morning that the outside connection to the internet DNS servers were lost.  We called Cox several times, and they performed the usual reset of router and modem and things seem to work for a while.  But the next day gone again.

 

They came out and replaced the hookups, I I had to buy a new cable modem and replaced a digital switch.  Each time things seemed to work for a while.

 

I thought about replacing the Airport Extreme (as I read others had done in a similar situation to no avail).

 

After much frustration, I started to search for Airport Extreme and DNS and found similar tales.

 

After several unproductive calls with Cox Internet first tier support, I finally reached a tier who acknowledged that Cox was rolling out IPv6 and was having a problem with Airport Extreme Routers.  They said Apple was working on it and gave me a number to call at apple router support.  Unfortunalely the number they gave was no longer valid.


I persisted and eventually got to Apple support and indeed they knew of the problem and said Cox was working on it.. But there was a temporary fix - and that was to turn off iPv6 on the airport extreme (more precisely (internet > Internet Options > Configure Ipv6 : Link-Local Only).

 

For now this seemed to stop the overnight drop that seems to happen between 12:00 AM and 2:00 AM.  From experience I dont think its really an IPV6 compaibility issue, but how the router responds to some sort of reset signal/test signal that the service does in the early morning.

 

So the question is - does anybody know for sure whats going on or who is really working on this.  From my perspective both camps think its the other's problem.  BTW - Ive read about others with Non Apple routers chasing something similar.

Posted on Mar 2, 2016 9:07 PM

Close

Q: Airport Extreme and Cox Internet IPv6 Problem

  • All replies
  • Helpful answers

first Previous Page 32 of 32
  • by Tomesha,

    Tomesha Tomesha Aug 14, 2016 12:27 AM in response to bienvenido3
    Level 1 (4 points)
    Aug 14, 2016 12:27 AM in response to bienvenido3

    Same issues - here in Santa Barbara, CA - Cox service.  Back in March issues with my Cox service and Airport and the IPv6 roll out, used the "link local" solution back then and worked fine with minor intermittent issues, but since the firmware upgrade to 7.7.7 on the Airport Extreme, more probelms and in the last few days - constant drops.   Cox Tech says all reads fine from their end, and if I connect my MacBook directly to the Motorola SB6141 modem, it's fine and does not drop...  tried the Google Servers fix ... same drops.

  • by askin6305B,

    askin6305B askin6305B Aug 15, 2016 8:17 PM in response to Tomesha
    Level 1 (4 points)
    Aug 15, 2016 8:17 PM in response to Tomesha

    Tomesha - You mentioned the "link local" workaround, but I wasn't clear if you still are using that or if you've re-enabled full IPv6 on the Airport.  Also - what does "constant drops" mean?  Total loss of internet, or just failures of IPv6-specific connections as described elsewhere in this thread? Lastly - what's your CM MAC?

  • by Tomesha,

    Tomesha Tomesha Aug 15, 2016 8:26 PM in response to askin6305B
    Level 1 (4 points)
    Aug 15, 2016 8:26 PM in response to askin6305B

    It is in "link local" - still using it, but I spent some time also setting it to iPv6 in "auto" to se if maybe the 7.7.7 firmware update had solved it.

     

    I'm not sure what the extent of the drops are.  The modem indicator lights show it is working and connected to the internet, but on the Airport Utility, it shows the modem disconnected, orange light and not ability to connect.  Also my Apple TV disconnects (routed through the Airport Extreme) - most times it is resolved by resetting the Airport and sometimes both the modem and Airport.  

     

    Can you tell me what a "CM MAC" is and I will tell you - I went to art school

     

    As an aside, it is dropping less this past day - instead of every like 15-20 mins, now a couple of times day....

     

    Thanks.

  • by Tomesha,

    Tomesha Tomesha Aug 15, 2016 10:31 PM in response to Tomesha
    Level 1 (4 points)
    Aug 15, 2016 10:31 PM in response to Tomesha

    Ah, I figured it out... Cable Modem MAC!

     

    On the bottom it says: HFC MAC ID: 306023CEB6C6

     

    Two of the log errors -

     

    Aug 13 2016 23:44:374-ErrorT101.0RCP-ID in RCC not supported;CM-MAC=30:60:23:ce:b6:c6;CMTS-MAC=00:19:2f:e5:a0:c8;CM-QOS=1.1;CM-VER =3.0;
    Aug 13 2016 23:43:276-NoticeI401.0TLV-11 - unrecognized OID;CM-MAC=30:60:23:ce:b6:c6;CMTS-MAC=00:19:2f:e5:a0:c8;CM-QOS=1.1;CM-VER=3.0;
  • by askin6305B,

    askin6305B askin6305B Aug 16, 2016 7:30 AM in response to Tomesha
    Level 1 (4 points)
    Aug 16, 2016 7:30 AM in response to Tomesha

    If it was still happening with the "link-local" setting applied, your issue is probably not related to IPv6 which is what this support thread has revolved around.  I pulled up your modem but nothing jumped out as being abnormal.  Best thing I can tell you is to call Cox support next time you notice it happening, before you reboot anything.  Sorry I can't be more help.

  • by Tomesha,

    Tomesha Tomesha Aug 16, 2016 1:03 PM in response to askin6305B
    Level 1 (4 points)
    Aug 16, 2016 1:03 PM in response to askin6305B

    Thanks for even taking the time to help!

     

    I did call Cox when it was happening - they said the modem was fine, had me connect my MacBook directly to the Cable Modem, and it was fine - no drops... when I went back to the Airport & Modem, it kept happening again.

     

    So they felt it was an issue with the Airport...  But who knows with Cox.

     

    Thank you again.

first Previous Page 32 of 32