Akamai Edgekey issues ?

[mpetach at netflight.com (Matthew Petach)]

On Mon, Sep 2, 2013 at 7:33 PM, Jorge Amodio <jmamodio at 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 at 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 at 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 at 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
> >
> >
>
>