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Hongli Lai
Asked: 2010-06-18 09:11:24 +0800 CST

How to tune TCP TIME_WAIT timeout on Solaris?

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I'm trying to change the TCP TIME_WAIT timeout on Solaris. According to some Google results I need to run this command:

ndd -set /dev/tcp tcp_time_wait_interval 60000

However I get:

operation failed: Not owner

What am I doing wrong? I'm already running ndd as root. Is there another way to tune TIME_WAIT?

networking solaris

2 Answers

  1. Check the permissions of:

    # ls -l /dev/tcp
lrwxrwxrwx 1 root root 27 2009-05-18 11:17 /dev/tcp -> ../devices/pseudo/tcp@0:tcp

# ls -l /devices/pseudo/tcp@0:tcp
crw-rw-rw- 1 root sys 42, 0 2010-06-01 13:34 /devices/pseudo/tcp@0:tcp

    You can try running it with truss to see where it fails. It's likely a permission issue.

    Also compare the output of ppriv -l with another system where it works.

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  2. Best Answer

    Perhaps are you running that command on a non global zone with a shared IP interface.

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