Thank you for answer.
I tried to repeat the situation on a non-prodaction machine, but hadn't
success. I made this steps (from thread
http://freebsd.1045724.n5.nabble.com/ping-sendto-No-buffer-space-available-td5746337.html)
1. Start a ping flood: ping -f <other-machine-ip>
2. Let it run for a few seconds.
3. Disconnect the cable.
4. After a while, you should see "no buffer space" error.
5. Stop ping flood.
6. Re-connect the cable and wait 10 seconds.
7. Start a normal ping. Error messages should show up again.
At the end i had 'no buffer space available', but when i started ping
test machine from other machine, test machine became available and
network started to work.
May be there is something wrong in freebsd 7.3 em driver and updating to
freebsd 9 may resolve the problem, but i would like to know exactly.
Denis
On 21.12.2012 22:08, Ryan Stone wrote:
On Fri, Dec 21, 2012 at 7:13 AM, Tsaregorodtsev Denis
<tele...@extrim.it <mailto:tele...@extrim.it>> wrote:
Hello,
I maintenance ISP's DNS server which works under FreeBSD 7.3 and
BIND 9.9.1-P4. The network adapter is Intel(R) PRO/1000 Network
Connection, driver - em. The server is connected to a Cisco 6500
switch. Sometimes the switch goes down (for maintenance) and is
unavailable for 10 minutes. After the switch goes up the server is
still unavailable through IP. When I open an IPMI console on the
server and enter the ping command, I receive "no buffer space
available" error message. And the network doesn't work until the
server reboot.
I tried to google this and found that the problem can be solved by
increasing nmbclusters parameter. But I want to understand why
this problem appears when the switch is rebooting . May be you can
suggest something?
Best regards, Tsaregorodtsev Denis
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Do you have a non-production machine you can test with? Can you
confirm that the follow (compile-tested only) patch of 7.3 resolves
the issue:
http://people.freebsd.org/~rstone/patches/e1000_link.diff
<http://people.freebsd.org/%7Erstone/patches/e1000_link.diff>
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