Ventrilo reports low latency, but acts as if it were high

Hooligan · 04-23-2007, 10:46 PM

Up until a few days ago, Ventrilo worked perfectly fine for me on any Speex server I logged into. Now, no matter what server I log into, I can only hear the first word of every other sentance someone speaks.

I believe my University is behind this, but I don't know for sure, and I'd like some help figuring it out.

Here is a traceroute to one of the servers I use.

mark:~ mark$ traceroute -p 9965 [deleted].com
traceroute to [deleted].com, 64 hops max, 40 byte packets
1 gw (128.153.216.1) 0.925 ms 0.500 ms 0.490 ms
2 gw.net.clarkson.edu (128.153.2.1) 1.350 ms 0.806 ms 0.984 ms
3 65.90.195.45 (65.90.195.45) 152.008 ms 163.220 ms 155.852 ms
4 216.140.10.205 (216.140.10.205) 169.495 ms 153.790 ms 179.604 ms
5 so-7-0-0.edge5.newyork1.level3.net (4.68.63.17) 178.575 ms 191.710 ms 192.091 ms
6 ae-32-52.ebr2.newyork1.level3.net (4.68.97.62) 163.131 ms ae-32-56.ebr2.newyork1.level3.net (4.68.97.190) 154.724 ms 127.421 ms
7 ae-3.ebr1.washington1.level3.net (4.69.132.89) 133.121 ms 124.094 ms 112.327 ms
8 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 105.945 ms ae-3.ebr1.washington1.level3.net (4.69.132.89) 79.224 ms 58.183 ms
9 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 62.652 ms 94.172 ms *
10 ae-22-52.car2.dallas1.level3.net (4.68.122.46) 198.056 ms ae-22-54.car2.dallas1.level3.net (4.68.122.110) 198.890 ms ae-22-56.car2.dallas1.level3.net (4.68.122.174) 174.477 ms
11 ae-22-52.car2.dallas1.level3.net (4.68.122.46) 166.102 ms ae-22-54.car2.dallas1.level3.net (4.68.122.110) 158.348 ms ae-22-56.car2.dallas1.level3.net (4.68.122.174) 160.767 ms
12 speakeasy-i.car2.dallas1.level3.net (4.78.224.2) 164.746 ms 164.939 ms 180.716 ms
13 100.ge-0-0-0.cr1.dfw1.speakeasy.net (69.17.82.217) 172.042 ms 200.ge-1-0-0.cr1.dfw1.speakeasy.net (69.17.82.221) 182.872 ms so-1-2-0.core1.dfw1.netfire.com (69.17.82.158) 171.121 ms
14 69.12.0.54 (69.12.0.54) 198.412 ms 181.314 ms 182.763 ms
15 69.12.0.54 (69.12.0.54) 146.407 ms 147.362 ms 132.583 ms
16 69.12.15.134 (69.12.15.134) 113.372 ms 108.506 ms 105.917 ms

Hooligan · 04-23-2007, 11:53 PM

I also did a ping, and there was no loss of packets.

wadesworld · 04-24-2007, 02:03 AM

Well, your traceroute times are not stellar, but traceroute only proves if there's an issue affecting all traffic on a route. It's certainly possible to have great traceroute and ping but have crappy vent performance because someone is packet shaping ventrilo traffic.

Contact your university's network support department and ask if they're doing any packet shaping.

Hooligan · 04-24-2007, 10:02 AM

Thanks wadesworld. Apparently they do some packet shaping for the purpose of limiting VoIP, turns out I just had to get my name added to a list to get around it.

04-23-2007, 10:46 PM	#1
Hooligan Junior Member Join Date: Jul 2005 Posts: 7	Ventrilo reports low latency, but acts as if it were high Up until a few days ago, Ventrilo worked perfectly fine for me on any Speex server I logged into. Now, no matter what server I log into, I can only hear the first word of every other sentance someone speaks. I believe my University is behind this, but I don't know for sure, and I'd like some help figuring it out. Here is a traceroute to one of the servers I use. mark:~ mark$ traceroute -p 9965 [deleted].com traceroute to [deleted].com, 64 hops max, 40 byte packets 1 gw (128.153.216.1) 0.925 ms 0.500 ms 0.490 ms 2 gw.net.clarkson.edu (128.153.2.1) 1.350 ms 0.806 ms 0.984 ms 3 65.90.195.45 (65.90.195.45) 152.008 ms 163.220 ms 155.852 ms 4 216.140.10.205 (216.140.10.205) 169.495 ms 153.790 ms 179.604 ms 5 so-7-0-0.edge5.newyork1.level3.net (4.68.63.17) 178.575 ms 191.710 ms 192.091 ms 6 ae-32-52.ebr2.newyork1.level3.net (4.68.97.62) 163.131 ms ae-32-56.ebr2.newyork1.level3.net (4.68.97.190) 154.724 ms 127.421 ms 7 ae-3.ebr1.washington1.level3.net (4.69.132.89) 133.121 ms 124.094 ms 112.327 ms 8 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 105.945 ms ae-3.ebr1.washington1.level3.net (4.69.132.89) 79.224 ms 58.183 ms 9 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 62.652 ms 94.172 ms * 10 ae-22-52.car2.dallas1.level3.net (4.68.122.46) 198.056 ms ae-22-54.car2.dallas1.level3.net (4.68.122.110) 198.890 ms ae-22-56.car2.dallas1.level3.net (4.68.122.174) 174.477 ms 11 ae-22-52.car2.dallas1.level3.net (4.68.122.46) 166.102 ms ae-22-54.car2.dallas1.level3.net (4.68.122.110) 158.348 ms ae-22-56.car2.dallas1.level3.net (4.68.122.174) 160.767 ms 12 speakeasy-i.car2.dallas1.level3.net (4.78.224.2) 164.746 ms 164.939 ms 180.716 ms 13 100.ge-0-0-0.cr1.dfw1.speakeasy.net (69.17.82.217) 172.042 ms 200.ge-1-0-0.cr1.dfw1.speakeasy.net (69.17.82.221) 182.872 ms so-1-2-0.core1.dfw1.netfire.com (69.17.82.158) 171.121 ms 14 69.12.0.54 (69.12.0.54) 198.412 ms 181.314 ms 182.763 ms 15 69.12.0.54 (69.12.0.54) 146.407 ms 147.362 ms 132.583 ms 16 69.12.15.134 (69.12.15.134) 113.372 ms 108.506 ms 105.917 ms

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04-23-2007, 11:53 PM	#2
Hooligan Junior Member Join Date: Jul 2005 Posts: 7	I also did a ping, and there was no loss of packets.

04-24-2007, 02:03 AM	#3
wadesworld Senior Member Join Date: Nov 2005 Posts: 2,934	Well, your traceroute times are not stellar, but traceroute only proves if there's an issue affecting all traffic on a route. It's certainly possible to have great traceroute and ping but have crappy vent performance because someone is packet shaping ventrilo traffic. Contact your university's network support department and ask if they're doing any packet shaping.

04-24-2007, 10:02 AM	#4
Hooligan Junior Member Join Date: Jul 2005 Posts: 7	Thanks wadesworld. Apparently they do some packet shaping for the purpose of limiting VoIP, turns out I just had to get my name added to a list to get around it.