 | | | strange network problem | strange network problem 2004-02-10 - By crucificator
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Xu Congyuan, Patrick wrote:
> I am upgrading from redhat 8 to redhat el es 3. I have problem with
> the netowrk.
>
> This server has two network cards installed. One is connected to our
> internal network. The other one is connected to internet.
>
> The problem is with the external network.
>
> When the server is up for a while, the external network is down. It
> means it cannot be accessed via its external ip address. The internal
> network is working fine.
>
> I found out the external network can be resumed by "ifdown eth1; ifup
> eth1 ", which means to restart the network card.
>
> When the external network is down, I run "ifconfig ", and the result
> shows eth1 is "UP " and working. I really cannot figure out what
> caused this problem. Now what I can do is to restart the "eth1 " every
> 10 minutes.
>
> Any suggestion?
>
> The result of "ifconfig " is shown below.
>
> eth0 Link encap:Ethernet HWaddr 00:03:47:F1:94:5A
> inet addr:192.168.42.248 Bcast:192.168.42.255
> Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:22271 errors:0 dropped:0 overruns:0 frame:0
> TX packets:9294 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:3229764 (3.0 Mb) TX bytes:2858019 (2.7 Mb)
> Interrupt:10 Base address:0x1400 Memory:fe7e0000-fe7e0038
>
> eth1 Link encap:Ethernet HWaddr 00:03:47:F1:94:5C
> inet addr:202.73.42.108 Bcast:202.73.42.111
> Mask:255.255.255.248
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:20886 errors:0 dropped:0 overruns:0 frame:0
> TX packets:12747 errors:0 dropped:0 overruns:0 carrier:0
> collisions:4 txqueuelen:1000
> RX bytes:3119008 (2.9 Mb) TX bytes:5289086 (5.0 Mb)
> Interrupt:5 Base address:0x1440 Memory:fe780000-fe780038
>
> 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:200665 errors:0 dropped:0 overruns:0 frame:0
> TX packets:200665 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:19471584 (18.5 Mb) TX bytes:19471584 (18.5 Mb)
>
>
>
>
Just a thought... Maybe APM brings down the card?
Look in the logs maybe you can find something strange. Although if you
say that the OS reports the interface as up...
What exactly means "a while "?
Ah, just saw... 10 minutes. If it 's exactly 10 minutes and occurs
constantly then you must realise that there is something configurable.
Anyway give us the output from ifconfig eth1 when your connection is
down and the exact occurence of the spookie thing :).
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