On Mon, Sep 2, 2013 at 7:33 PM, Jorge Amodio <jmamodio@gmail.com> wrote:
Here is another bit of data... www.apple.com not reachable from a machine using Google's NS, reachable from an iPad using TWC NS
IP addresses returned by each are different ... could be load balancing, or creative (broken) traffic engineering
Far more likely to be simply due to Akamai localizing the IP addresses to be as "close" to the resolving nameserver as possible; so, when using Google DNS, you end up at an Akamai node "close" to the Google DNS server; when using the TWC nameservers, you end up pointing to an Akamai node closer to those TWC nameservers. Not a case of "broken" traffic engineering at all.
But for moments packets get lost at ae0.pr1.dfw10.tbone.rr.com this also could be TWC routing/peering issues but I don't know how many more levels of CS I have to go to reach somebody with a clue, after testing my modem zillion times ...
Why not just use the TWC nameservers, if thiings work when you use them instead of the Google nameservers? Matt
pete@tango:~$ dig www.apple.com
; <<>> DiG 9.8.1-P1 <<>> www.apple.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46202 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;www.apple.com. IN A
;; ANSWER SECTION: www.apple.com. 723 IN CNAME www.isg-apple.com.akadns.net . www.isg-apple.com.akadns.net. 49 IN CNAME www.apple.com.edgekey.net. www.apple.com.edgekey.net. 408 IN CNAME e3191.dscc.akamaiedge.net. e3191.dscc.akamaiedge.net. 9 IN A 184.86.141.15
;; Query time: 42 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Sep 2 21:06:57 2013 ;; MSG SIZE rcvd: 161
pete@tango:~$ dig @209.18.47.61 www.apple.com
; <<>> DiG 9.8.1-P1 <<>> @209.18.47.61 www.apple.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20041 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;www.apple.com. IN A
;; ANSWER SECTION: www.apple.com. 1135 IN CNAME www.isg-apple.com.akadns.net . www.isg-apple.com.akadns.net. 50 IN CNAME www.apple.com.edgekey.net. www.apple.com.edgekey.net. 442 IN CNAME e3191.dscc.akamaiedge.net. e3191.dscc.akamaiedge.net. 5 IN A 23.42.157.15
;; Query time: 39 msec ;; SERVER: 209.18.47.61#53(209.18.47.61) ;; WHEN: Mon Sep 2 21:07:09 2013 ;; MSG SIZE rcvd: 161
On Sat, Aug 31, 2013 at 7:26 PM, Jorge Amodio <jmamodio@gmail.com> wrote:
Hi There,
is anybody having any problems with sites that go through Akamai's CDN ?
I'm having problems to connect to many served by them, just two examples.
www.ti.com www.newark.com
Cheers Jorge