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Old 06-01-2004, 10:00 AM   #1
balajipriya
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Registered: Nov 2003
Posts: 7

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Network stops working after reboot


All Linux Gurus

We have a IBM server which is running Redhat Linux AS 3.0.

We are having a strange problem whereby when I reboot the machine the network stops working(ping,telnet,ssh) .

This only way to make it work is to disable the switch port and re-enable it again. This fixes the problem.

Could anyone tell me where should I look to diagnose this problem
(arp broadcast may be ???) ??

# ifconfig -a

[root@bgruby103h1 root]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0D:60:14:54:0E
inet addr:135.191.71.69 Bcast:135.191.71.127 Mask:255.255.255.128
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5506 errors:7915 dropped:0 overruns:0 frame:178854
TX packets:4592 errors:0 dropped:0 overruns:0 carrier:0
collisions:466578 txqueuelen:1000
RX bytes:432561 (422.4 Kb) TX bytes:437866 (427.6 Kb)
Interrupt:24

eth0:0 Link encap:Ethernet HWaddr 00:0D:60:14:54:0E
inet addr:135.191.71.72 Bcast:135.191.71.127 Mask:255.255.255.128
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:24

eth1 Link encap:Ethernet HWaddr 00:0D:60:14:54:0F
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:25

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:5564 errors:0 dropped:0 overruns:0 frame:0
TX packets:5564 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:342597 (334.5 Kb) TX bytes:342597 (334.5 Kb)


Thanx
Balaji./
 
Old 06-03-2004, 02:49 PM   #2
bagira
LQ Newbie
 
Registered: Dec 2003
Location: Germany
Distribution: Gentoo
Posts: 27

Rep: Reputation: 15
Have a look, if the problem is related to your switch or to your linux box. Did you try to use another switch? Whats the output of ifconfig and route -nv after reboot?
Cheers bagira
 
Old 06-03-2004, 10:49 PM   #3
ppuru
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Registered: Mar 2003
Location: Beautiful BC
Distribution: RedHat & clones, Slackware, SuSE, OpenBSD
Posts: 1,791

Rep: Reputation: 46
perhaps your linux box and the switch are unable to auto-negotiate the speed (10 / 100) and other settings (HDX /FDX).
 
  


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