Re: netstat -a help
From: Adams Kevin J (kevin.adams_at_PHS.COM)
Date: 04/15/04
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Date: Thu, 15 Apr 2004 12:42:31 -0700 To: aix-l@Princeton.EDU
Try http://pdslib4aix.seas.ucla.edu/aixpdslib.html
Kevin Adams
PacifiCare Behavioral Health
Principal Systems Analyst
AIX CATE
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Bob.Kelley@BRINKSINC.COM
Sent: Thursday, April 15, 2004 12:11 PM
To: aix-l@Princeton.EDU
Subject: Re: [aix-l] netstat -a help
Holger what id/psswd do we use for that site?
Bobby Kelley Jr.
972-877-5341
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use lsof to see which app is listening
lsof -i:36300
ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/
use tcpdump to find out which nodes communicate there, f.e.
tcpdump -Ipxvi your_interface port 3700
btw a "udp connection" does not exist - you will always see *.* as
foreign address
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Jason delaFuente
Sent: Thursday, April 15, 2004 6:42 PM
To: aix-l@Princeton.EDU
Subject: netstat -a help
On system A the following command
netstat -a|grep 3700
shows
udp4 0 0 *.3700 *.*
On system B I see the following with the same command
udp4 36300 0 *.3700 *.*
As you can see the second machine has packets sitting in the receive
buffer. They do not go away. We had an application that was
experiencing problems (locked up) on Node B and ended up doing an HACMP
failover to Node A. The first node DID NOT have this entry in its
netstat output before the failover but it does now, the rec buffers are
empty. The entry on Node B went away when the application failed over.
I'm trying to find out where exactly this connection is coming from.
Already checked in /etc/services and there is nothing defined for 3700.
Does anyone have any suggestions.
Thanks!
Jason de la Fuente
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