High Latency During Evening Hours

[probuddha]

Friends,

It seems that the latency of my connection shoots up to between 250 - 400ms when pinging a Mumbai server from Kolkata. It happens especially in the evening hours.

As a result of this, the speed reduces from the alloted 4mbps to a meagre 250 - 360 kbps.

The latency remains normal during the day time and also late night, but is badly screwed up during the evening.

Also noticing something strange:-

No matter what server I am trying to make a trace route of, the first hop is always timing out.

Yahoo.com

Tracing route to yahoo.com [67.195.160.76]
over a maximum of 30 hops:

1 * * * Request timed out.
2 12 ms 9 ms 10 ms 117.194.64.1
3 10 ms 11 ms 9 ms 218.248.162.70
4 126 ms 126 ms 127 ms 218.248.255.22
5 154 ms 155 ms 153 ms 59.163.206.181.static.chennai.vsnl.net.in [59.
3.206.181]
6 186 ms 182 ms 182 ms 59.163.16.5.static.vsnl.net.in [59.163.16.5]
7 185 ms 183 ms 185 ms 59.163.16.5.static.vsnl.net.in [59.163.16.5]
8 181 ms 179 ms 179 ms 59.163.55.149.static.vsnl.net.in [59.163.55.14

9 180 ms 179 ms 178 ms 59.163.55.149.static.vsnl.net.in [59.163.55.14

10 182 ms 183 ms 180 ms if-10-0-0-561.core1.MLV-Mumbai.as6453.net [209
8.105.53]
11 381 ms 387 ms 381 ms if-2-1-0-0.tcore1.MLV-Mumbai.as6453.net [180.8
38.21]
12 * 388 ms 377 ms if-3-2.tcore1.PYE-Paris.as6453.net [80.231.154
0]
13 390 ms 389 ms 388 ms if-2-2.tcore1.PVU-Paris.as6453.net [80.231.154
7]
14 376 ms 375 ms 375 ms if-5-871.tcore1.AEQ-Ashburn.as6453.net [216.6.
.57]
15 424 ms 397 ms 397 ms if-2-2.tcore2.AEQ-Ashburn.as6453.net [216.6.87
]
16 403 ms 403 ms 403 ms 64.86.85.38
17 401 ms 403 ms 401 ms ae-6.pat2.dce.yahoo.com [216.115.102.176]
18 397 ms 397 ms 397 ms xe-3-0-0.msr1.ac2.yahoo.com [216.115.108.131]
19 396 ms 399 ms * xe-3-2-0.clr3.ac4.yahoo.com [72.30.96.3]
20 403 ms 397 ms * te-8-1.bas-a2.ac4.yahoo.com [76.13.0.175]
21 401 ms 401 ms * ir1.fp.vip.ac4.yahoo.com [67.195.160.76]
22 401 ms 403 ms 401 ms ir1.fp.vip.ac4.yahoo.com [67.195.160.76]

Trace complete.


Google.com

Tracing route to google.com [74.125.235.50]
over a maximum of 30 hops:

1 * * * Request timed out.
2 11 ms 9 ms 9 ms 117.194.64.1
3 10 ms 9 ms 8 ms 218.248.162.70
4 127 ms 127 ms 124 ms 218.248.255.22
5 * 156 ms 155 ms 218.248.246.130
6 166 ms 167 ms 167 ms 115.113.128.17.static-mumbai.vsnl.net.in [115.
3.128.17]
7 385 ms 385 ms 385 ms 121.240.1.38
8 394 ms 382 ms 381 ms 209.85.241.52
9 * 387 ms 385 ms 72.14.232.100
10 410 ms 381 ms 383 ms 66.249.94.74
11 380 ms 381 ms 384 ms 72.14.233.145
12 * 386 ms 389 ms 74.125.235.50

Trace complete.

Facebook.com

Tracing route to facebook.com [69.63.181.12]
over a maximum of 30 hops:

1 * * * Request timed out.
2 12 ms 9 ms 9 ms 117.194.64.1
3 10 ms 9 ms 11 ms 218.248.162.74
4 124 ms 125 ms 125 ms 218.248.255.10
5 156 ms 157 ms 157 ms 218.248.250.82
6 381 ms 358 ms 361 ms ix-8-1-0-0.tcore1.LVW-LosAngeles.as6453.net [20
.58.33.133]
7 364 ms 365 ms 369 ms if-2-2.tcore2.LVW-LosAngeles.as6453.net [66.110
59.2]
8 365 ms 367 ms 367 ms 64.86.252.66
9 367 ms * 367 ms ae-1.r20.lsanca03.us.bb.gin.ntt.net [129.250.5.
53]
10 373 ms 373 ms 373 ms ae-2.r21.snjsca04.us.bb.gin.ntt.net [129.250.2.
47]
11 375 ms 375 ms 375 ms ae-2.r06.snjsca04.us.bb.gin.ntt.net [129.250.5.
5]
12 371 ms 373 ms * xe-0-2-0-2.r06.snjsca04.us.ce.gin.ntt.net [128.
41.219.126]
13 383 ms 371 ms 369 ms ae0.bb01.sjc1.tfbnw.net [74.119.76.21]
14 371 ms 371 ms 465 ms ae4.br02.snc1.tfbnw.net [74.119.76.26]
15 370 ms 375 ms 377 ms po1022.csw01b.snc2.tfbnw.net [74.119.79.243]
16 375 ms 377 ms 377 ms www-11-01-snc2.facebook.com [69.63.181.12]

Trace complete.


Does this indicate something, please advice.

Thanks a lot

 

[rsen]

I'm from Kolkata too; I've seen this problem for the last 2 years.It's not just in the evening; the latency spikes and packet losses can happen at any time during the day; but yes primarily between 11am and 7pm.1) Terrible or nonexistent backup networking during repairs/outages2) Very low quality wires to save money3) Bad routing, frequent routing changes4) Low priority traffic because of the above 5) Weird government policy to limit bandwidthAnyway there is no way to fix this. You could get an airtel or reliance connection as a secondary in case your connection becomes erratic but they are both equally unreliable and more expensive than bsnl. You can hope they won't both become awful at the same time haha.I guess you could go and complain to the exchange but they will probably either not even bother to listen or not understand.I'm pretty sure bsnl also says that they provide no guarantee for any kind of quality of service; which is basically a free ticket to have crap internet forever.

 

[probuddha]

hmm...I lodged a grievance with the DGM Broadband of CAL TEL and he called me up to say what they can do if there's a "traffic jam" I have a Photon as a backup connection...but that doesn't help much either. I don't have access to any other ISP in our locality apart from BSNL.So I guess there's nothing to be done at the moment except to hope that the "traffic jam" clears up

 

[rsen]

airtel is in almost every area in and around kolkataIf you are on PPoE, try reconnecting with a different dns server - sometimes helps.*Right* now aka between 11am-2pm my latency and packet loss is more or less fine. I saw some erratic connectivity at around 11am but it seems to be ok for now.