NIC Goes Down !

[MyLinux]

hi friends,
I just try to manage my ispconfig server,during some settings I restarted the ispconfig_server and after that we experience an strange issue:
Sometimes ,just within some intervals the network connection on my Linux machine goes down and does not respond to ping attepmts.This phenomenon continues till I issue a ping command on Linux server like the following :
*******************
PING google.com (216.239.37.99) 56(84) bytes of data.
64 bytes from 216.239.37.99: icmp_seq=0 ttl=241 time=262 ms
64 bytes from 216.239.37.99: icmp_seq=1 ttl=241 time=314 ms

--- google.com ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 1999ms
rtt min/avg/max/mdev = 262.489/288.427/314.366/25.944 ms, pipe 2
********************
But as you may see 1 out of 3 pings timed out and exactly after the second one the problem disappears and pinging would become successful ,from console and other machines to this NIC.
In addition I am sure that this problem does not stem from net connectivity because of experiencing no problem with other online devices.
Thank you for any comment.

[till]

Originally Posted by MyLinux

hi friends,
I just try to manage my ispconfig server,during some settings I restarted the ispconfig_server and after that we experience an strange issue:
Sometimes ,just within some intervals the network connection on my Linux machine goes down and does not respond to ping attepmts.This phenomenon continues till I issue a ping command on Linux server like the following :
*******************
PING google.com (216.239.37.99) 56(84) bytes of data.
64 bytes from 216.239.37.99: icmp_seq=0 ttl=241 time=262 ms
64 bytes from 216.239.37.99: icmp_seq=1 ttl=241 time=314 ms

--- google.com ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 1999ms
rtt min/avg/max/mdev = 262.489/288.427/314.366/25.944 ms, pipe 2
********************
But as you may see 1 out of 3 pings timed out and exactly after the second one the problem disappears and pinging would become successful ,from console and other machines to this NIC.
In addition I am sure that this problem does not stem from net connectivity because of experiencing no problem with other online devices.
Thank you for any comment.

Never seen this before. If you think it is really related to the ISPConfig server restart, you can try to disble the network configuartion function in ISPConfig.
The setting is in the ISPConfig configuration file:

/home/admispconfig/ispconfig/lib/config.inc.php

[domino]

Ping your other machines from the linux box. And also ping your linux box from the other machines.