Network randomly going down?

Question

High i just built a new kernel and for some reason the network support will randomly go down after 3-minutes to 1 hour. I use
# ifconfig eth0 down && killall dhcpcd && sudo ifconfig eth0 up && dhcpcd eth0
and that does not fix ii I try
# /etc/rc.d/network restart
that all so does not help other computers are not having this problem so i know it is not a connectivity/ISP issue.
Does any one have an idea of why this might happen.
Last edited by generic_ (2009-04-25 03:10:07)

Answer 1

This issue has now been resolved. Details can be found here: http://www.cisco.com/en/US/partner/ts/fn/635/fn63537.html.
Here is the short version:
Problem Description:
Calibration between DRAM and processor on AIR-CAP350x and AIR-LAP126x results in Access Points (APs) failing to boot properly. One symptom includes a white LED and no console output.
Background:
The root cause is the DDR memory calibration process that was performed on the Access Points (APs) at the time of manufacture. The fix recalibrates the existing memory hardware, so it will operate more reliably.
Workaround/Solution:
The fix for this issue is now publicly available. Go to www.cisco.com to obtain Access Point (AP) IOS code version: 15.2(2)JA or later and/or WLC software version: 7.0.235.3 (or later 7.0 release), 7.2.111.3 (or later 7.2 release) or 7.3.101.0 (or later 7.3 release).
As of June 2012, new AP3500 and AP1260 products with version ID (VID) V02 are free of this issue.