Hi Michael et al,
I have been watching vl100.coresw2.hfa.nv.net.il for the past month for
a customer of mine and have seem roughly the same TCP packet loss going
into it on port 80. (It turned out that the customer's problem was not
that but a configuration error on a different, internal Netvision router.
FYI,
- yba
On Sat, 5 Apr 2008, Michael Tewner wrote:
Date: Sat, 5 Apr 2008 20:51:06 +0300
From: Michael Tewner <[EMAIL PROTECTED]>
To: Amos Shapira <[EMAIL PROTECTED]>
Cc: IGLU Mailing list <linux-il@cs.huji.ac.il>
Subject: Re: major packet loss at hot server
Yeah - I seem to be getting 20-30% loss on TCP packets to www.cnn.com
on the same router that was dropping the ICMP packets. (#4 below)
Selected device eth0, address 10.1.1.193, port 38669 for outgoing packets
Tracing the path to www.cnn.com (64.236.29.120) on TCP port 80 (www),
30 hops max
1 10.1.1.254 0.514 ms 0.974 ms 0.985 ms
2 XXXXXXXXX 0.986 ms 0.988 ms 0.983 ms
3 xxxxxxx.ser.netvision.net.il (XXXXXXXX) 9.403 ms 11.062 ms 12.373 ms
4 vl100.coresw2.hfa.nv.net.il (212.143.8.69) 13.803 ms * 10.785 ms
5 ge0-1.gw2.hfa.nv.net.il (212.143.8.212) 9.913 ms 9.894 ms 26.442 ms
6 pos1-0.brdr1.nyc.nv.net.il (212.143.12.13) 255.455 ms 247.516 ms
On Fri, Apr 4, 2008 at 11:30 PM, Amos Shapira <[EMAIL PROTECTED]> wrote:
On Fri, Apr 4, 2008 at 10:35 PM, Michael Tewner <[EMAIL PROTECTED]> wrote:
Just talked to Netvision Asakim support -
He was knowlegable - ran `mtr` on his workstation and saw the packet
loss.
He explained that "there is no problem" and that the core routers are
dropping the ping packets based on the amount of load on the router.
He explained that the router should only be dropping ICMP packets.
I didn't read all the messages on this thread but maybe if you could run the
same tests with tcptraceroute you could see weather the packet drop happens
to TCP packets or not?
--Amos
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