How do I force a netdump on a system that has frozen?

Updated -

Release Found: Red Hat Enterprise Linux 3 and 4

A machine that has frozen does not trigger netdump. With the help of other tools, a crash dump can still be captured. This article assumes that netdump has been configured properly.

I. SysRq

  1. Enable sysrq by executing the command:

     echo 1 > /proc/sys/kern...

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