Nameserver Stops Responding
We are experiencing page timeouts and very slow loading issues particularly with web-surfing.
My DSL Line is good. VDSL trains at 56M Down 12.8M Up. Internet Service Profile is 30/5 and I can hit that at anytime to any speedserver I choose. The RG was last rebooted 15+ days ago. SNR is 17.5D 21.5U. Since the last reboot I've had 2CRCs and <55K FECs. It is one clean loop.
Problem is not seen on uVerse TV nor is it seen on streaming services (e.g., youtube, netflix, etc.) as these apps are not as DNS intensive as traditional websurfing activities such as Facebook.
Example of MOTO NVG589 Log during periods of poor surfing.
2016-09-13T21:06:50-05:00 L3 dnsmasq: no responses from nameserver '184.108.40.206'
2016-09-13T21:08:27-05:00 L3 dnsmasq: nameserver '220.127.116.11' is now responding
For 2Minutes and 37Seconds Gateway couldn't talk to AT&T DNS Server. That means when I typed in google.com, I needed to wait for over 2 minutes for the Residential Gateway to figure out I need to go to 18.104.22.168.
This problem is intermittent. I may go several days without an issue and during that time period, the log will show few if any nameserver problems. ( I have logs going back to July).
When I do have problems, I will see constant error messages for both of the DNS servers (22.214.171.124 & 126.96.36.199) assigned to my Residential Gateway.
I've tested replacing the L3 (188.8.131.52) DNS and Google (184.108.40.206) DNS on one of my home PC's and it had no issues during timeperiods that others using the AT&T default config were having problems.
I've talked to AT&T (800 288 2020) and have been told since the line is good and I am getting 30/5, this is my problem. I escalated to supervisor and got the same response. In fact he told me to just change to the alternate DNS servers.
This is not MY problem, it is an AT&T network problem. The IP Block is owned by SBC (now AT&T) and the servers are dns156r10.sbcglobal.net and dns157r10.sbcglobal.net. And the Residential Gateway receives DNS server as part of the DHCP (or IPCP - Don't know if AT&T still does PPPoX).
Even if I wanted to change the DNS Server address, the MOTO NVG589 won't let me.
So that means I'd need to do it on each individual device in my home (that ain't gonna happen - That's why we invented DHCP).
You need to figure this out. I used to be able to get connected to your Level 2 (and sometimes Level 3) to get things like this fixed. But whatever new process that's in place doesn't allow for a dumb subscriber to talk to the support staff.
Thanks - BP