TATA Communications - the reason we're lagging
Been suffering lately from high latency, packet loss and disconnects? You're not alone. The issue seems to be TATA Communication routers - the CSP that most of us that lag use to reach the Montreal Datacenter. This is what a common tracert might look like to one of us.
1 <1 ms <1 ms <1 ms Voidzone [192.168.1.1]
2 1 ms 5 ms 1 ms gw-n1-u-d2.ias.bredband.telia.com [195.198.146.129]
3 3 ms 3 ms 3 ms s-b4-pos14-0.telia.net [213.248.101.142]
4 4 ms 4 ms 4 ms s-bb4-link.telia.net [213.155.131.32]
5 4 ms 4 ms 4 ms s-b3-link.telia.net [213.155.136.53]
6 4 ms 4 ms 4 ms vsnl-ic-124239-s-b1.c.telia.net [213.248.104.162]
7 283 ms 260 ms 260 ms if-7-1-3-0.tcore1.FR0-Frankfurt.as6453.net [195.219.50.145]
8 121 ms 119 ms 118 ms if-4-2.tcore1.PVU-Paris.as6453.net [80.231.153.10]
9 136 ms 137 ms 138 ms if-2-2.tcore1.PYE-Paris.as6453.net [80.231.154.18]
10 133 ms 141 ms 133 ms if-3-6.tcore1.L78-London.as6453.net [80.231.130.85]
11 133 ms 131 ms 129 ms if-2-2.tcore2.L78-London.as6453.net [80.231.131.1]
12 139 ms 137 ms 136 ms if-20-2.tcore2.NYY-NewYork.as6453.net [216.6.99.13]
13 146 ms * 138 ms if-2-2.tcore2.MTT-Montreal.as6453.net [64.86.226.13]
14 133 ms 134 ms 133 ms if-0-2.tcore1.MTT-Montreal.as6453.net [216.6.115.89]
15 134 ms * * if-5-2.tcore1.W6C-Montreal.as6453.net [64.86.31.6]
16 196 ms 196 ms * 66.198.96.50
17 209 ms 211 ms 213 ms 192.34.76.2
18 199 ms 207 ms 192 ms 199.91.189.234
19 209 ms * 211 ms 199.91.189.26
From hop 7 to 17 I'm using exclusively TATA Communication routers (as6453.net). Typically, the as6453.net backbone routers handle the load without issue. Even hop 7, which spiked during the tracert, showed a steady 30ms ping when I manually pinged it later.
The issue occurs at hop 16. A follow-up extended ping showed a steady 20% packetloss with high ping spikes. Funnily enough, this router, just like all the as6453.net routers, belongs to TATA Communications, but it's not part of the backbone. I believe it's one of many link routers that connects the Montreal Datacenter (starts at 192.34.76.2) to the TATA backbone, and is devoted specifically for the use of Ormuco Communications.
Obviously, they underestimated the amount of traffic going through this node, and it's suffering for it. They (meaning TATA Communications) need to split the load to other routers, or upgrade their hardware at this node. Sadly, it's nothing we endpoint customers can do anything about. TATA Communications work as a CSP, meaning they sell their services to ISP's. ISP's in turn sell their services to us, and to SQEX (The Montreal Datacenter uses Ormuco Communications as an ISP).
What we can do is lean on SQEX, who in turn can lean on Ormuco, who in turn can lean on TATA Communications, who are not providing the service they should. We can also lean on our respective ISP's who are employing TATA Communications to route their traffic to Montreal. The more feedback TATA gets about this issue, the more likely it's going to get resolved as soon as possible.
So send your support tickets, to SQEX and to your ISP, and try to include as much information as possible. When your problems occur, which router is responsible (use tracert and ping, or alternatively a third-party program like WinTrace to make things easier), and anything else you can think of. Unless we voice this issue we're going to get brushed off as a minority, or that the problem somehow is at our end.