We just brought up 4 dual gigahertz processor Dell 1400 RedHat Linux 7.0
machines with memory ranging from 256Mb to 1GB.  I can't remember the kernel
number off hand but I used the kernel that Red Hat sent on CD.  Installed as
a server from the gui, added nsf server services and didn't include web,
news or nis.  These are all networked computers.  I don't run X on any of
these.  They are used to run numerical models that generally tend to pound
the processors, but that shouldn't be a problem.  I look at them today and 2
of them are dead in the water -- they're on but you can't ping, rsh or
telnet.  They are looking at dns servers, but not NIS maps.  No samba.

If anybody has any ideas as to why, I would like to hear them.  If anybody
has any methodology for troubleshooting these kinds of things, I would
appreciate that as well.

TIA.



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