 | | | strange network problem | strange network problem 2004-02-10 - By crucificator
Back
Xu Congyuan, Patrick wrote:
> crucificator wrote:
>
> > 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 :).
> >
> >
> >
> "A while " can be 1 minute, 10 minutes, etc. It is not fixed.
> As I have said, the result of ifconfig eth1 is showing it is "UP " when
> the external network is down.
>
> Maybe I should look into the system log file.
>
> Btw, this is my company 's web server. So I cannot afford to let it
> down. Currently I did a cron job to restart the eth1 every 10 minutes.
>
>
>
>
>
sorry about the shorewall thing. I do not know at this point if you use it.
--
redhat-list mailing list
unsubscribe mailto:redhat-list-request@(protected)?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/redhat-list
|
|
|