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Old 09-02-2006, 08:45 AM   #1
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Registered: Aug 2006
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Server stops responding

I have RedHat
#uname -a
Linux whatever 2.6.9-42.0.2.ELsmp #1
this server is updated and it is running mail application.
all the sudden server stopped responding to external requests, yet it was responding fine and all seems to be working correctly when am working on the server.
by restarting the network service
#service network restart
everything went back to normal and server started responding normaly
i suspected that it is a routing issue correct me if am wrong
i have 3 NIC's configured with network ranges as follows
eth0 -
eth2 -

eth0 ip =
eth2 ip =

only eth0 is configured for defualt gateway
the output of netstat -nr is as follows
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface     U         0 0          0 eth1     U         0 0          0 eth0     U         0 0          0 eth2     U         0 0          0 eth2         UG        0 0          0 eth0
what do you think wasw the reason for this kind of behavior

thank you
Old 09-02-2006, 10:30 AM   #2
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Registered: May 2005
Location: Atlanta Georgia USA
Distribution: Redhat (RHEL), CentOS, Fedora, CoreOS, Debian, FreeBSD, HP-UX, Solaris, SCO
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You always have only one "default" gateway. Your "default" is

Notice that all your other destinations are using as their gateway. This is normal.

As to why you had to restart networking it's not clear. Providing ifconfig and netstat output prior to restart next time might give a clearer picture.


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