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Old 04-19-2004, 08:43 AM   #1
cahenesy
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Ping continues to fail after remote host recovers


Ok, here is a real puzzler. I have a Compaq DL360 running RedHat 9, kernel 2.4.20, which I use as a network monitor. I am constantly pinging several remote hosts.

If one of the remote hosts goes down, obiviously I start getting destination host unreachable messages from the ping command. However, once the remote computer comes back up, I CONTINUE to get destination host unreachable for that computer. In fact, ping will continue to fail unless I do a network stack restart, or reboot the linux box.

I was having this same problem when running RedHat 7.3, and thought maybe upgrading would help, but it did not.

Suggestions?

Thanks!
Chris
 
Old 04-19-2004, 09:20 AM   #2
dfctve_end_user
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are you pinging the hosts by ip address or by hostname?
are you using dhcp or static ip?
 
Old 04-19-2004, 09:31 AM   #3
cahenesy
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I get the same results whether I ping by IP or hostname. All machines involved have static IPs.
 
Old 04-19-2004, 09:37 AM   #4
dfctve_end_user
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sounds like a DNS or hardware problem. Are you using Bind?
 
Old 04-19-2004, 09:53 AM   #5
cahenesy
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This problem happens when using IPs only, so I don't think it's DNS related. (I haven't had any other DNS related problem with this machine). As far as being hardware related, I could easily be convinced that it is a quirk in the kernel driver for this particular NIC.
 
Old 04-19-2004, 09:54 AM   #6
dfctve_end_user
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who manufactured the NIC?
 
Old 04-19-2004, 10:44 AM   #7
cahenesy
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From /proc/pci:
Intel Corp. 82544EI Gigabit Ethernet Controller (rev 2)

Using the e1000 driver.

I should point out a mistake I made in my original post. The server is a Dell PowerEdge 1650.
 
Old 04-19-2004, 03:16 PM   #8
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ftp://ftp.dell.com/network/Intel_LAN..._RH9_08.tar.gz

Start there.
 
  


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