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Old 01-22-2013, 09:51 AM   #1
jugurtha
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Registered: Jan 2013
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network card sleeping


Dear all,
I have a network issue with linux server redhat 6.3
a broadcom network adapter works fine but sometimes it stops replying to answers from outside, what is strange is that it replies only to machines on the same subnet but not to others on other subnets. as soon as I do ping from the machine itself to anything outside it becomes reachable.
I disabled Network manager as well as firewalls and IPv6
Have you any idea?

Last edited by jugurtha; 01-23-2013 at 03:37 AM.
 
Old 01-29-2013, 03:11 AM   #2
T0eCutter
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power savings ?

Hi jugurtha

Just an idea but could it be some "power saving option" in the bios that put's the nic to sleep ?

//T0e
 
Old 01-31-2013, 05:38 AM   #3
jugurtha
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Thanks for the reply
I am wondoring how come since it replies to the same subnet ping requests and not to the other from othe subnets
 
Old 01-31-2013, 06:08 AM   #4
T0eCutter
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sounds like the problem is outside your server then (sorry I missed the nic is ok serving all on the same LAN).
could it be some arp cache in the router/switch that gets updated by your ping ? (and cleaned after a certain time) I remember I had to issue a "arping -s" command when moving around ip-adreses between different machines/nic's but you are not doing anything like that.

//regards T0e
 
Old 01-31-2013, 06:37 AM   #5
jugurtha
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I think so but hard to troubleshoot
actually
i did a cron job that ping a server outside and since then such problem disappeared
 
  


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