Plusnet's DNS giving out different IPs with longer routes for Akamai
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- Re: Plusnet's DNS giving out different IPs with lo...
Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 12:41 PM
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For example, Plusnet's DNS giving:
dig @212.159.6.9 static.bbci.co.uk
static.bbci.co.uk. 668 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 203 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 12698 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 19 IN A 23.212.108.110
a1638.g.akamai.net. 19 IN A 23.212.108.86
traceroute to 23.212.108.110 (23.212.108.110), 30 hops max, 52 byte packets
1 192.168.0.1 (192.168.0.1) 1.338 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 20.879 ms
3 link-b-central10.ptn-gw02.plus.net (212.159.2.138) 20.969 ms
4 xe-5-3-0.ptw-cr02.plus.net (212.159.0.110) 19.704 ms
5 ae2.ptw-cr01.plus.net (195.166.129.4) 19.831 ms
6 te-3-4.car5.London1.Level3.net (217.163.45.181) 123.285 ms
7 ae-51-51.csw1.London1.Level3.net (4.69.139.88) 20.882 ms
8 ae-3-3.ebr1.Paris1.Level3.net (4.69.141.86) 28.035 ms
9 ix-20-0.tcore1.LDN-London.as6453.net (195.219.83.101) 20.684 ms
10 ae-2-70.edge5.Paris1.Level3.net (4.69.168.72) 27.205 ms
11 80.231.20.42 (80.231.20.42) 40.050 ms
12 if-2-2.tcore1.PYE-Paris.as6453.net (80.231.154.18) 28.595 ms
13 if-3-6.tcore1.L78-London.as6453.net (80.231.130.85) 29.440 ms
14 a23-212-108-110.deploy.static.akamaitechnologies.com (23.212.108.110) 32.454 ms
vs. OpenDNS
dig @208.67.222.220 static.bbci.co.uk
static.bbci.co.uk. 527 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 126 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 1444 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 20 IN A 23.62.53.67
a1638.g.akamai.net. 20 IN A 23.62.53.49
traceroute to 23.62.53.67 (23.62.53.67), 30 hops max, 52 byte packets
1 192.168.0.1 (192.168.0.1) 1.431 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 24.365 ms
3 link-a-central10.ptn-gw01.plus.net (212.159.2.136) 20.089 ms
4 xe-5-3-0.ptw-cr01.plus.net (212.159.0.108) 20.141 ms
5 ae2.ptw-cr02.plus.net (195.166.129.5) 19.858 ms
6 *
7 a23-62-53-67.deploy.static.akamaitechnologies.com (23.62.53.67) 20.894 ms
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 2:08 PM
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OK here:
Quote ; <<>> DiG 9.8.6-P1 <<>> @212.159.6.9 static.bbci.co.uk
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21530
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;static.bbci.co.uk. IN A
;; ANSWER SECTION:
static.bbci.co.uk. 387 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 169 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 10500 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 13 IN A 23.61.255.219
a1638.g.akamai.net. 13 IN A 23.61.255.216
;; Query time: 31 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 01 13:58:54 GMT Standard Time 2014
;; MSG SIZE rcvd: 175
Tracing route to a23-61-255-219.deploy.static.akamaitechnologies.com [23.61.255.
219]
over a maximum of 30 hops:
1 52 ms 99 ms 94 ms dsldevice.lan [192.168.1.254]
2 27 ms 26 ms 25 ms lo0-central10.ptw-ag01.plus.net [195.166.128.195
]
3 27 ms 29 ms 25 ms link-b-central10.ptw-gw02.plus.net [212.159.2.14
6]
4 30 ms 25 ms 27 ms xe-4-2-0.ptw-cr02.plus.net [212.159.0.242]
5 26 ms 25 ms 25 ms ae2.ptw-cr01.plus.net [195.166.129.4]
6 * * * Request timed out.
7 28 ms 26 ms 25 ms a23-61-255-219.deploy.static.akamaitechnologies.
com [23.61.255.219]
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 2:13 PM
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[tt]dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 231 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 259 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 10344 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 22 IN A 23.61.255.219
a1638.g.akamai.net. 22 IN A 23.61.255.216
;; Query time: 29 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:01:29 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 866 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 266 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 13692 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 29 IN A 23.212.108.110
a1638.g.akamai.net. 29 IN A 23.212.108.86
;; Query time: 31 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:01:32 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 226 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 194 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 10431 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 15 IN A 23.212.108.110
a1638.g.akamai.net. 15 IN A 23.212.108.86
;; Query time: 31 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:01:37 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 717 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 252 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 7670 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 9 IN A 23.62.53.67
a1638.g.akamai.net. 9 IN A 23.62.53.49
;; Query time: 30 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:01:40 2014
;; MSG SIZE rcvd: 175
traceroute 23.61.255.219
traceroute to 23.61.255.219 (23.61.255.219), 30 hops max, 60 byte packets
1 192.168.0.254 (192.168.0.254) 68.000 ms 67.642 ms 67.222 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 18.714 ms 19.005 ms 18.800 ms
3 link-b-central10.ptn-gw02.plus.net (212.159.2.138) 21.083 ms 20.966 ms 20.762 ms
4 xe-5-3-0.ptw-cr02.plus.net (212.159.0.110) 20.587 ms 20.472 ms 20.939 ms
5 ae2.ptw-cr01.plus.net (195.166.129.4) 20.762 ms 20.646 ms 20.440 ms
6 * * *
7 a23-61-255-219.deploy.static.akamaitechnologies.com (23.61.255.219) 17.614 ms 17.085 ms 17.819 ms
~ $ traceroute 23.212.108.110
traceroute to 23.212.108.110 (23.212.108.110), 30 hops max, 60 byte packets
1 192.168.0.254 (192.168.0.254) 16.712 ms 16.254 ms 15.872 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 18.564 ms 18.921 ms 18.715 ms
3 link-a-central10.ptn-gw01.plus.net (212.159.2.136) 20.191 ms 20.084 ms 19.879 ms
4 xe-5-3-0.ptw-cr01.plus.net (212.159.0.108) 19.958 ms 20.236 ms 20.028 ms
5 te-3-4.car5.London1.Level3.net (217.163.45.181) 21.128 ms te-4-2.car5.London1.Level3.net (217.163.45.249) 21.018 ms *
6 ae-52-52.csw2.London1.Level3.net (4.69.139.120) 20.664 ms 17.609 ms 17.922 ms
7 ae-226-3602.edge3.London1.Level3.net (4.69.166.150) 18.530 ms ae-228-3604.edge3.London1.Level3.net (4.69.166.158) 18.291 ms ae-225-3601.edge3.London1.Level3.net (4.69.166.146) 18.697 ms
8 ix-20-0.tcore1.LDN-London.as6453.net (195.219.83.101) 19.491 ms 19.183 ms 19.724 ms
9 if-26-2.tcore2.LDN-London.as6453.net (80.231.62.57) 20.680 ms 20.803 ms 20.695 ms
10 80.231.20.42 (80.231.20.42) 22.464 ms 22.259 ms 22.844 ms
11 a23-212-108-110.deploy.static.akamaitechnologies.com (23.212.108.110) 33.007 ms 33.503 ms 33.383 ms
traceroute 23.62.53.67
traceroute to 23.62.53.67 (23.62.53.67), 30 hops max, 60 byte packets
1 192.168.0.254 (192.168.0.254) 20.364 ms 20.005 ms 19.637 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 18.382 ms 18.532 ms 18.534 ms
3 link-b-central10.ptn-gw02.plus.net (212.159.2.138) 20.679 ms 20.571 ms 20.368 ms
4 xe-5-3-0.ptw-cr02.plus.net (212.159.0.110) 20.191 ms 20.458 ms 20.256 ms
5 * * *
6 a23-62-53-67.deploy.static.akamaitechnologies.com (23.62.53.67) 20.235 ms 17.594 ms 17.122 ms
[/tt]
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 2:22 PM
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[tt]dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 670 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 97 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 6782 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 16 IN A 23.62.53.49
a1638.g.akamai.net. 16 IN A 23.62.53.67
;; Query time: 39 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:16:28 2014
;; MSG SIZE rcvd: 175
pi@resolver ~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 806 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 97 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 12785 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 19 IN A 23.212.108.110
a1638.g.akamai.net. 19 IN A 23.212.108.86
;; Query time: 29 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:16:39 2014
;; MSG SIZE rcvd: 175
pi@resolver ~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 766 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 57 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 12745 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 6 IN A 23.212.108.110
a1638.g.akamai.net. 6 IN A 23.212.108.86
;; Query time: 31 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:17:19 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 122 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 172 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 9485 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 10 IN A 23.212.108.86
a1638.g.akamai.net. 10 IN A 23.212.108.110
;; Query time: 30 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:17:23 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 611 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 281 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 6723 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 11 IN A 23.62.53.49
a1638.g.akamai.net. 11 IN A 23.62.53.67
;; Query time: 30 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:17:27 2014
;; MSG SIZE rcvd: 175
~ $ dig @212.159.6.9 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 117 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 167 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 9480 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 5 IN A 23.212.108.86
a1638.g.akamai.net. 5 IN A 23.212.108.110
;; Query time: 48 msec
;; SERVER: 212.159.6.9#53(212.159.6.9)
;; WHEN: Sat Mar 1 14:17:28 2014
;; MSG SIZE rcvd: 175
[/tt]
================================================================================
No shift on open dns... well spotted.
=================================================================================
[tt]dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 408 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 95 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19017 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 11 IN A 23.62.53.49
a1638.g.akamai.net. 11 IN A 23.62.53.67
;; Query time: 29 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:10 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; QUESTION SECTION:
;static.bbci.co.uk. IN A
;; ANSWER SECTION:
static.bbci.co.uk. 408 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 95 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19017 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 11 IN A 23.62.53.49
a1638.g.akamai.net. 11 IN A 23.62.53.67
;; Query time: 30 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:10 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 407 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 94 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19016 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 10 IN A 23.62.53.67
a1638.g.akamai.net. 10 IN A 23.62.53.49
;; Query time: 30 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:11 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 406 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 93 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19015 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 9 IN A 23.62.53.49
a1638.g.akamai.net. 9 IN A 23.62.53.67
;; Query time: 30 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:12 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 406 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 93 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19015 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 9 IN A 23.62.53.49
a1638.g.akamai.net. 9 IN A 23.62.53.67
;; Query time: 29 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:12 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 405 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 92 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19014 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 8 IN A 23.62.53.67
a1638.g.akamai.net. 8 IN A 23.62.53.49
;; Query time: 30 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:13 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 401 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 88 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19010 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 4 IN A 23.62.53.67
a1638.g.akamai.net. 4 IN A 23.62.53.49
;; Query time: 29 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:17 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 399 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 86 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19008 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 20 IN A 23.62.53.67
a1638.g.akamai.net. 20 IN A 23.62.53.49
;; Query time: 118 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:19 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 398 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 85 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19007 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 19 IN A 23.62.53.49
a1638.g.akamai.net. 19 IN A 23.62.53.67
;; Query time: 28 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:20 2014
;; MSG SIZE rcvd: 175
~ $ dig @208.67.222.123 static.bbci.co.uk
;; ANSWER SECTION:
static.bbci.co.uk. 397 IN CNAME static-bbci.bbc.net.uk.
static-bbci.bbc.net.uk. 84 IN CNAME static.bbci.co.uk.edgesuite.net.
static.bbci.co.uk.edgesuite.net. 19006 IN CNAME a1638.g.akamai.net.
a1638.g.akamai.net. 18 IN A 23.62.53.67
a1638.g.akamai.net. 18 IN A 23.62.53.49
;; Query time: 31 msec
;; SERVER: 208.67.222.123#53(208.67.222.123)
;; WHEN: Sat Mar 1 14:25:21 2014
;; MSG SIZE rcvd: 175
[/tt]
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 3:51 PM
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Quote from: 11110_110 Just to make sure, i've tested again, is it me or are those routes shifting ?
I think the problem there is, each plusnet dns IP has something like 4 caches.
You would think the short ttl of these cdn servers would even things out and all the caches would hold the same IP's, unfortunately this never seems to happen.
The easiest answer is not to use PN's dns.
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 3:56 PM
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6.113 - short www.amd.com = 23.61.255.232
6.114 - short www.amd.com = 23.61.251.10
6.117 - long www.amd.com = 77.67.40.50
6.118 - short www.amd.com = 23.62.3.41
So it seems only 1 out of the 4 PTN DNS servers is giving out IP addresses that send your traffic a longer way.
Testing the other lot (PCL) from a PTN / PTW gateway might not be fair, but:
6.129 - long
6.130 - short
6.131 - short
6.132 - long
2 out of the 4 PCL DNS servers giving IP addresses with longer routes.
I would have thought this would be directing a lot of traffic away from Plusnet's own Akamai IPs and through Level3 etc. instead.
Edit: I'm not sure exactly when this started, maybe since Feb 24th?
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 7:29 PM
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Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 8:50 PM
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Ex-Broadband Service Manager
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 9:15 PM
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Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
01-03-2014 9:25 PM
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Quote from: npr Looks like it could be a routing issue to me, bouncing between London and Paris.
OK here:
2 27 ms 26 ms 25 ms lo0-central10.ptw-ag01.plus.net
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
02-03-2014 8:49 PM
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dig @212.159.6.9 newsimg.bbc.co.uk +noadflag
;; QUESTION SECTION:
;newsimg.bbc.co.uk. IN A
;; ANSWER SECTION:
newsimg.bbc.co.uk. 648 IN CNAME newsimg.bbc.net.uk.
newsimg.bbc.net.uk. 231 IN CNAME news.bbc.co.uk.edgesuite.net.
news.bbc.co.uk.edgesuite.net. 4633 IN CNAME a1733.g.akamai.net.
a1733.g.akamai.net. 27 IN A 23.62.53.67
a1733.g.akamai.net. 27 IN A 23.62.53.58
or
newsimg.bbc.co.uk. 431 IN CNAME newsimg.bbc.net.uk.
newsimg.bbc.net.uk. 70 IN CNAME news.bbc.co.uk.edgesuite.net.
news.bbc.co.uk.edgesuite.net. 5473 IN CNAME a1733.g.akamai.net.
a1733.g.akamai.net. 27 IN A 92.122.123.48
a1733.g.akamai.net. 27 IN A 92.122.123.81
or
newsimg.bbc.co.uk. 757 IN CNAME newsimg.bbc.net.uk.
newsimg.bbc.net.uk. 102 IN CNAME news.bbc.co.uk.edgesuite.net.
news.bbc.co.uk.edgesuite.net. 4583 IN CNAME a1733.g.akamai.net.
a1733.g.akamai.net. 29 IN A 217.212.252.153
a1733.g.akamai.net. 29 IN A 217.212.252.163
traceroute to 217.212.252.153 (217.212.252.153), 30 hops max, 60 byte packets
1 192.168.0.1 (192.168.0.1) 3.176 ms
2 lo0-central10.pcl-ag01.plus.net (195.166.128.182) 21.764 ms
3 link-a-central10.pcl-gw01.plus.net (212.159.2.160) 24.713 ms
4 xe-10-0-0.pcl-cr01.plus.net (212.159.0.192) 21.043 ms
5 xe-11-2-0.edge3.London2.Level3.net (212.187.201.213) 22.542 ms
6 ae-3-3.ebr1.Paris1.Level3.net (4.69.141.86) 38.304 ms
7 ae-71-71.csw2.Paris1.Level3.net (4.69.161.82) 37.791 ms
8 ae-2-70.edge3.Paris1.Level3.net (4.69.168.70) 40.455 ms
9 prs-b7-link.telia.net (213.248.89.189) 75.974 ms
10 prs-bb1-link.telia.net (213.155.132.192) 78.207 ms
11 ffm-bb1-link.telia.net (213.155.132.157) 84.966 ms
12 s-bb3-link.telia.net (80.91.246.211) 107.361 ms
13 hls-b2-link.telia.net (80.91.245.179) 125.700 ms
14 217-212-252-153.customer.teliacarrier.com (217.212.252.153) 121.418 ms
So then:
@212.159.6.129 newsimg.bbc.co.uk = 92.122.123.48
@212.159.6.130 newsimg.bbc.co.uk = 23.62.53.67
@212.159.6.131 newsimg.bbc.co.uk = 92.122.123.81
@212.159.6.132 newsimg.bbc.co.uk = 217.212.252.163
Or is it just that something notices that the 23.6*.*.* servers are maxed out so decides to redirect traffic elsewhere?
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
02-03-2014 10:40 PM
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Still on ptn-ag03 this way so i've tested the ptn group of servers instead.
[tt]dig @212.159.6.9 newsimg.bbc.co.uk +noadflag
a1733.g.akamai.net. 27 IN A 23.62.53.58
a1733.g.akamai.net. 27 IN A 23.62.53.67
a1733.g.akamai.net. 8 IN A 23.61.251.11
a1733.g.akamai.net. 8 IN A 23.61.255.209
a1733.g.akamai.net. 24 IN A 66.171.231.95
a1733.g.akamai.net. 24 IN A 66.171.231.32
traceroute 66.171.231.95
traceroute to 66.171.231.95 (66.171.231.95), 30 hops max, 60 byte packets
1 192.168.0.254 (192.168.0.254) 26.158 ms 25.705 ms 25.318 ms
2 lo0-central10.ptn-ag03.plus.net (195.166.128.192) 18.693 ms 21.673 ms 21.852 ms
3 link-b-central10.ptn-gw02.plus.net (212.159.2.138) 19.128 ms 21.313 ms 21.339 ms
4 xe-5-3-0.ptw-cr02.plus.net (212.159.0.110) 27.225 ms 27.728 ms 27.619 ms
5 195.99.126.182 (195.99.126.182) 25.280 ms 20.770 ms 26.357 ms
6 core1-te-0-9-0-17.faraday.ukcore.bt.net (213.121.193.134) 21.944 ms 20.824 ms 20.514 ms
7 host213-121-193-133.ukcore.bt.net (213.121.193.133) 20.517 ms 20.493 ms 27.092 ms
8 166-49-214-194.eu.bt.net (166.49.214.194) 20.100 ms 20.867 ms 20.171 ms
9 166-49-214-158.eu.bt.net (166.49.214.158) 22.239 ms 23.165 ms 20.243 ms
10 ae2-90g.cr1.lhr1.uk.nlayer.net (69.22.139.62) 19.271 ms 19.897 ms 19.975 ms
11 xe-2-3-0.cr1.ams2.nl.nlayer.net (69.22.142.14) 28.233 ms xe-1-0-0.cr1.cdg1.fr.nlayer.net (69.22.142.57) 27.676 ms xe-2-3-0.cr1.ams2.nl.nlayer.net (69.22.142.14) 27.916 ms
12 xe-0-2-0.cr1.fra1.de.nlayer.net (69.22.142.12) 40.947 ms xe-1-0-1.cr1.fra1.de.nlayer.net (69.22.142.11) 34.660 ms 36.865 ms
13 as34164.ae1.cr1.fra1.de.nlayer.net (69.22.139.90) 45.448 ms 45.597 ms 45.963 ms
14 66.171.231.95 (66.171.231.95) 35.754 ms 36.328 ms 34.534 ms
dig @212.159.6.113 newsimg.bbc.co.uk=23.62.53.67
dig @212.159.6.114 newsimg.bbc.co.uk=23.61.255.209
dig @212.159.6.117 newsimg.bbc.co.uk=2.20.183.163
dig @212.159.6.118 newsimg.bbc.co.uk=80.150.192.112[/tt]
Edit: Added
===================PTN============================
[tt]
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.113 18.18/26.48/45.84/10.16/0
212.159.6.114 18.88/19.60/20.94/0.78/0
212.159.6.117 18.83/22.37/30.05/4.11/0
212.159.6.118 18.15/18.64/18.85/0.26/0
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.113 18.59/24.86/31.90/5.41/0
212.159.6.114 18.13/18.56/18.82/0.30/0
212.159.6.117 18.83/19.92/23.89/1.99/0
212.159.6.118 18.21/19.50/20.78/0.65/1
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.113 18.22/18.60/19.56/0.49/0
212.159.6.114 18.58/19.00/19.59/0.37/0
212.159.6.117 18.35/19.90/22.06/1.49/0
212.159.6.118 18.20/21.78/26.61/3.29/0
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.113 18.45/21.46/26.64/3.53/0
212.159.6.114 17.62/20.07/24.79/2.55/0
212.159.6.117 17.97/18.64/19.98/0.70/0
212.159.6.118 18.34/18.89/20.07/0.69/0[/tt]
=================PCL========================
[tt]
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.129 18.23/18.61/19.04/0.28/0
212.159.6.130 18.37/19.70/22.81/1.75/0
212.159.6.131 17.97/18.74/20.68/0.99/0
212.159.6.132 18.87/19.55/21.17/0.83/0
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.129 17.74/18.25/18.65/0.32/0
212.159.6.130 18.04/18.15/18.23/0.06/0
212.159.6.131 17.71/19.73/24.26/2.37/0
212.159.6.132 18.66/19.03/19.54/0.32/0
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.129 17.92/18.13/18.43/0.18/0
212.159.6.130 17.99/19.21/20.71/1.03/0
212.159.6.131 18.03/20.31/26.53/3.46/1
212.159.6.132 18.75/19.43/20.41/0.56/0
Nameserver Response Time (ms)
min/avg/max/stdev/retries
212.159.6.129 18.25/18.49/18.78/0.21/0
212.159.6.130 17.99/18.39/19.39/0.50/0
212.159.6.131 18.04/22.60/28.41/4.11/0
212.159.6.132 18.70/23.37/28.27/3.87/0[/tt]
Looks pretty much the same, jumpy!
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
08-03-2014 12:42 PM
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Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
20-05-2014 10:10 PM
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The IP addresses being returned for Akamai edgesuite hosted sites seems to be flipping between the new 212.56.73.* addresses and the old 23.6*.*.* addresses. Possibly 6.129 and 6.130 return the new 212.56.73.* IPs and 6.131 and 6.132 the older ones, although that may not be completely consistent. (From pcl-ag02). Also got an occasional further out result such as 23.215.60.141.
Re: Plusnet's DNS giving out different IPs with longer routes for Akamai
21-05-2014 6:55 AM
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The 212.56.73.x addresses are part of a local cache however Akamai are not always preferring that due to some balancing metrics in their world which we are trying to iron out.
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