Hi,
I don't see a RUNNING (i.e. UP BROADCAST RUNNING) on the interface's
ifconfig. Below is an ifconfig's eth0 on my system. From my
experience, if you don't have RUNNING, you don't have "link".
[root@drlin001 sbin]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:06:5B:ED:39:38
inet addr:10.151.10.58 Bcast:10.151.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:426778132 errors:0 dropped:0 overruns:0 frame:0
TX packets:430171885 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:381827976 (364.1 MiB) TX bytes:2592226465 (2.4 GiB)
Base address:0xcce0 Memory:feb60000-feb80000
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:165487055 errors:0 dropped:0 overruns:0 frame:0
TX packets:165487055 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:64638175 (61.6 MiB) TX bytes:64638175 (61.6 MiB)
[root@drlin001 sbin]#
As I can't see your dmesg output, if the interfaces are GIGE, you don't
even need a crossover cable. Of all of the ones that I have seen, GIGE
Ethernet interfaces generally know how to auto-crossover. If you’re not
sure which physical interface is eth0 and which is eth1 (or eth2), run:
ethtool -p eth0 5
This blinks the LED on the interface for five seconds without
interrupting network traffic.
Chuck Smoko
The Derfer wrote:
> I've got a RHEL 3AS box with a PCI-X network card in it and I've set
> that up as such (its ifconfig -a here):
>
> eth3 Link encap:Ethernet HWaddr 00:0A:5E:7A:E7:33
> inet addr:10.156.30.176 Bcast:10.156.30.255 Mask:255.255.255.0
> UP BROADCAST MULTICAST MTU:1500 Metric:1
> RX packets:527 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:62674 (61.2 Kb) TX bytes:0 (0.0 b)
> Interrupt:24
>
> Its ifcfg-eth3 looks like:
> # Broadcom Corporation|NetXtreme BCM5701 Gigabit Ethernet
> DEVICE=eth3
> ONBOOT=yes
> BOOTPROTO=static
> IPADDR=10.156.30.176
> NETMASK=255.255.255.0
> HWADDR=00:0A:5E:7A:E7:33
>
> But when I assign my laptop the address 10.156.30.213 and try to ping
> 10.156.30.176
> I can't successfully do it through a crossover cable and further get
> these messages
> in /var/log/messages. What's wrong here? Got to be a config issue (I
> think):
>
> Oct 2 12:13:41 host1 kernel: martian source 10.156.30.255 from
> 10.156.30.213, on dev eth3
> Oct 2 12:13:41 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:00
> Oct 2 12:14:50 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:14:50 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
> Oct 2 12:14:55 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:14:55 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
> Oct 2 12:15:00 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:15:00 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
> Oct 2 12:15:06 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:15:06 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
> Oct 2 12:15:47 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:15:47 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
> Oct 2 12:15:56 host1 kernel: martian source 10.156.30.176 from
> 10.156.30.213, on dev eth3
> Oct 2 12:15:56 host1 kernel: ll header: ff:ff:ff:ff:ff:ff:
> 00:15:c5:47:d2:72:08:06
>
> Netmask on my laptop is 255.255.255.0
> IP is 10.156.30.213
> No gateway specified.
>
> Routing table for linux host:
>
> [root@host1 user]# route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref
> Use Iface
> 1.1.1.0 * 255.255.255.0 U 0 0
> 0 eth2
> 10.156.30.0 * 255.255.255.0 U 0 0
> 0 eth0
> 10.156.30.0 * 255.255.255.0 U 0 0
> 0 eth3
> default 10.156.30.1 0.0.0.0 UG 0 0
> 0 eth0
>
> Please advise.
> THANK YOU.
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