tata

Tata - Airtel domestic peering IRR filtering and OpenDNS latency!

Anurag Bhatia
Last month I noticed quite high latency with Cisco’s OpenDNS from my home fibre connection. The provider at home is IAXN (AS134316) which is peering with content folks in Delhi besides transit from Airtel. ping -c 5 208.67.222.222 PING 208.67.222.222 (208.67.222.222) 56(84) bytes of data. 64 bytes from 208.67.222.222: icmp_seq=1 ttl=51 time=103 ms 64 bytes from 208.67.222.222: icmp_seq=2 ttl=51 time=103 ms 64 bytes from 208.67.222.222: icmp_seq=3 ttl=51 time=103 ms 64 bytes from 208.

Routing with North East India!

Anurag Bhatia
A few weeks back I got in touch with Marc from Meghalaya. He offered to host RIPE Atlas probe at Shillong and that’s an excellent location which isn’t there on RIPE Atlas coverage network yet. It took around 5 days for the probe to reach Shillong from Haryana. I think probably this probe is the one at the most beautiful place in India. :) Now that probe is connected, I thought to look into routing which is super exciting for far from places like Shillong.

What makes BSNL AS9829 as most unstable ASN in the world?!

Anurag Bhatia
On weekend I was looking at BGP Instability Report data. As usual (and unfortunately) BSNL tops that list. BSNL is the most unstable autonomous network in the world. In past, I have written previously about how AS9829 is the rotten IP backbone. This isn’t a surprise since they keep on coming on top but I think it’s well worth a check on what exactly is causing that. So I looked into BGP tables updates published on Oregon route-views from 21st May to 27th May and pulled data specifically for AS9829.

BSNL - Softlayer connectivity problem & possible fix

Anurag Bhatia
It’s late night here in India. I am having final 8th semester exams and as usual really bored! Though this time we have interesting subjects but still syllabus is pretty boring spreading across multiple books, notes and pdf’s. Anyways I will be out of college after June which sounds good. Tonight, I found a routing glitch. Yes a routing glitch!! :) These issues somehow keep my life in orbit and give a good understanding on how routing works over the Internet.

Tanzania Telecom leaking Telia routes to Tata

Anurag Bhatia
Last night I was looking at routing tables and saw a interesting case where for a specific route. Here’s what I got from Tata’s AS6453 looking glass: Router: gin-ldn-core4 Site: UK, London, LDN Command: show ip bgp 117.219.227.229 BGP routing table entry for 117.219.224.0/20 Bestpath Modifiers: deterministic-med Paths: (4 available, best #4) Multipath: eBGP 17 18 19 33765 1299 3549 9829, (received-only) ix-3-1-2.core4.LDN-London. from ix-3-1-2.core4.LDN-London. (ix-3-1-2.core4.LDN-London.) Origin IGP, valid, external 4755 9829 mlv-tcore2.