Monthly Archives: September 2011

29 Sep

Completed IPv6 Certification from Hurricane Electric

Just now completed IPv6 certification with Hurricane Electric. It was very much fun!

 

IPv6 Certification Badge for anuragbhatia

 

 

Starting was pretty much simple and basic, followed by email server running on v6 – which also I was doing already. I was stuck at most unexpected part – when I had to setup IPv6 based DNS servers. My first reaction was – that’s so simple….later on realized that system was just not accepting my entry and kept on giving error with AAAA records. Then suddenly I realized that I missed creating AAAA at DNS servers, but created only glue records which was causing issue. Created AAAA and that also went smoothly + glue helped me in final test too.

 

So finally I am an IPv6 expert now! 🙂

 

 

 

 

26 Sep

openDNS performing better in India now!

Hello everyone!

 

Seems like Tata Communications routing table is changed (call it fixed) to route traffic for openDNS to Singapore. It’s not going to London anymore and I see very good latency from BSNL too (which uses Tata Comm for most of it’s International traffic).

 

Here’s latest routing from BSNL to openDNS: 

 

HOST: laptop                                                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
  1. router2                                                                        0.0%    50    2.0   1.7   1.5   2.2   0.2
  2. 117.207.48.1                                                             2.0%    50   25.4  26.2  24.5  36.1   1.6
  3. 218.248.173.38                                                        0.0%    50   26.1  31.2  25.0 125.5  17.8
  4. 121.244.68.114.static-lvsb.vsnl.net.in               2.0%    50   70.1  72.2  69.4  97.8   6.0
  5. 172.31.61.210                                                            0.0%    50   92.9  94.8  92.9 109.0   2.2
  6. ix-4-2.tcore1.CXR-Chennai.as6453.net            0.0%    50   94.3  98.4  93.1 154.6  12.6
  7. if-5-2.tcore1.SVW-Singapore.as6453.net          0.0%    50  127.2 130.6 125.8 165.5   8.5
  8. if-2-2.tcore2.SVW-Singapore.as6453.net         0.0%    50  126.8 128.6 124.4 178.2   8.3
  9. Vlan1807.icore1.SVQ-Singapore.as6453.net   2.0%    50  135.4 132.3 126.1 140.4   4.4
 10. 203.208.186.101                                                      0.0%    50  202.4 163.6 156.9 256.5  17.5
 11. 203.208.153.110                                                       0.0%    50  159.1 166.8 157.0 272.4  23.6
 12. 203.208.190.166                                                      2.0%    50  160.3 160.6 158.6 191.9   4.6
 13. resolver1.opendns.com                                           2.0%    50  159.0 158.3 156.9 162.4   1.0

 

Overall I am getting latency from 160ms which seems OK considering 25-30ms latency for DSL, adding 60-90ms for route till South India followed by 30-40ms latency between Chennai and Singapore and eventually destination openDNS node on ASN 36692. 

 

Oh and btw I was lucky enough to meet DNS godfather David Ulevitch at openDNS HQ in San Francisco during last US trip. A very impressive personality!

 

Well that’s all for now. Will be posting a couple more updates soon. Have a good week ahead!