[mrtg] Re: OT: Overseas Network Connections

Trent Melcher tmelcher at trilogytel.com
Tue Mar 23 16:01:11 MET 2004


Alan, not sure where your getting blocked at,  I was able to get almost
there several times.  Here is the last trace I did.  THis originates in
Omaha NE.
Trent

1  promisenet (208.47.115.1)  197.716 ms  199.458 ms  199.921 ms
 2  kcm-edge-10.inet.qwest.net (65.116.32.249)  200.037 ms  199.723 ms
199.904 ms
 3  kcm-core-03.inet.qwest.net (205.171.29.89)  200.173 ms  199.789 ms
199.879 ms
 4  cer-core-02.inet.qwest.net (205.171.8.169)  199.881 ms  199.732 ms
199.927 ms
 5  cer-core-01.inet.qwest.net (205.171.139.1)  199.901 ms  200.011 ms
199.756 ms
 6  chi-core-02.inet.qwest.net (205.171.205.33)  199.928 ms  199.843 ms
200.004 ms
 7  chi-brdr-03.inet.qwest.net (205.171.20.138)  199.799 ms  199.842 ms
199.891 ms
 8  205.171.1.162 (205.171.1.162)  200.005 ms  207.115 ms  192.413 ms
 9  144.232.26.113 (144.232.26.113)  199.905 ms  199.612 ms  199.825 ms
10  144.232.20.156 (144.232.20.156)  199.930 ms  199.899 ms  199.849 ms
11  144.232.6.89 (144.232.6.89)  199.926 ms  201.194 ms  199.020 ms
12  144.232.9.151 (144.232.9.151)  199.515 ms  199.432 ms  209.881 ms
13  144.232.17.182 (144.232.17.182)  209.903 ms  199.773 ms  199.935 ms
14  144.232.20.194 (144.232.20.194)  439.902 ms  399.775 ms  399.898 ms
15  sl-gw10-hk-15-0.sprintlink.net (203.222.38.42)  399.984 ms  399.677 ms
399.595 ms
16  sla-chnet-2-0.sprintlink.net (203.222.39.106)  599.890 ms  599.693 ms
599.905 ms
17  210.53.126.5 (210.53.126.5)  399.886 ms  399.950 ms  399.897 ms
18  210.52.132.233 (210.52.132.233)  399.877 ms  400.062 ms  449.447 ms
19  2p0-gsr2-wh1.cncnet.net (210.52.130.70)  399.924 ms  399.868 ms  399.841
ms
20  3p0-gsr2-bj1.cncnet.net (210.52.130.25)  399.996 ms  399.835 ms  399.974
ms
21  210.52.148.54 (210.52.148.54)  399.843 ms  399.421 ms  399.893 ms
22  210.82.1.29 (210.82.1.29)  599.911 ms  399.827 ms  399.906 ms
23  210.82.1.77 (210.82.1.77)  599.910 ms  599.232 ms  400.327 ms
24  210.82.98.153 (210.82.98.153)  449.457 ms  599.814 ms  599.930 ms
25  211.155.191.253 (211.155.191.253)  599.901 ms  599.400 ms  599.881 ms
26  * * *
27  211.155.170.178 (211.155.170.178)  407.652 ms  599.834 ms *
28  * * *
29  * * *


-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch]On
Behalf Of Alan Rader
Sent: Tuesday, March 23, 2004 7:49 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: OT: Overseas Network Connections




We cannot test pings or trace routes all the way, the ISP says their
upstream provider, I think China Netcom blocks this kind of stuff and it
is there policy and they block it both ways.  I think they are one of
the main pipes into China.  If you have time, check out how far you can
get and what you see to ip 211.155.170.161 and let me know.  I get as
far as Sprintlink Asia Pacific Region 203.222.38.42.

>From another location I get stopped at 210.82.1.29 which is China
Netcom.

Thanks


-----Original Message-----
From: Gary Smith [mailto:gary at primeexalia.com]
Sent: Monday, March 15, 2004 4:39 PM
To: Alan Rader; mrtg at list.ee.ethz.ch
Subject: RE: [mrtg] OT: Overseas Network Connections


Alan,

Some of the things that you might want to try would be to do an extended
ping.  Send a larget packet out and set the wait time to 30 seconds or
so.  See if you are still seeing drops or extended delays.  My full time
job has a T3 from NY to Croyden and SF to Croyden and we see some
horrible latency during different times of the day.  I guess there's
just not enough fiber in the ocean :).  Sometimes the delays are
inevitable.

BTW, you should conduct these tests against the external interfaces of
each location and not the VPN portion.  If the external tests are fine
then you probably have a problem with something in your VPN
configuration.  Without more details I really can't comment on it.

We have setup a 5 legged VPN with 3 locations in California, 1 in
Florida and Tennessee.  We did it using Linux, poptop and pptpd clients.
3 of the locations are T1's and the other two are low end DSL's (IDSL
actually).  We get latency but never packet loss.

In either event I would also contact the remote ISP and raise the issue
with them.

Gary

	-----Original Message-----
	From: mrtg-bounce at list.ee.ethz.ch on behalf of Alan Rader
	Sent: Mon 3/15/2004 11:20 AM
	To: mrtg at list.ee.ethz.ch
	Cc:
	Subject: [mrtg] OT: Overseas Network Connections



	We are opening an office in China (Beijing) and our office
supposedly
	has a E1 to the Internet.  We have setup a site to site VPN and
I don't
	know if this is normal or what, but I think it sucks :(.
Average
	response time is over 300ms and I am seeing about 15% packet
loss.
	Response times and packet loss are jumping up and down
constantly.  Even
	right now when it is 3:00am over there, response times are
around 250ms
	and packet loss is still up and down from %5 - 30%.

	We have a T3 out of our US office that is barely used.  Pings
and
	traceroutes are dropped somewhere in China, I think China Netcom
or
	someone like that.

	Thanks for any help.


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