----- Original Message -----
From: "Wolfgang Denk" <[EMAIL PROTECTED]>
To: "zhongqx" <zhongqx at guoguang.com.cn>
Cc: <linuxppc-embedded at lists.linuxppc.org>
Sent: Wednesday, September 18, 2002 4:10 AM
Subject: Re: Why FEC and SCC1 can not work at the same time?
Sir ,
Thank you for your help,but I disagree with your in some point.
First, I did not use the same MAC address, eth0 is 00:d0:93:00:12:34 and eth1
is 00:d0:93:80:12:34 ,one is 00:12::34 and one is 80:12:34,are they in the
same?
Second , I did not use both ethernet port to connect the same network ,one is
192.168.1.X and other is 192.168.2.X ,netmask is 255.255.255.0.
The third, I ifconfiged my interface in /etc/inid.d/rcS file,my rcS file is:
#!/bin/sh
mount -t proc proc /proc
ifconfig lo 127.0.0.1 netmask 255.0.0.0
ifconfig eth0 192.168.2.221 netmask 255.255.255.0
ifconfig eth1 192.168.1.198 netmask 255.255.255.0
route add default gw 192.168.2.1 eth1
while [ 1 ]
do
/bin/sh
done
My inittab file is:
# /etc/inittab: init configuration.
# The default runlevel.
#hw id:3:initdefault:
# Boot-time system configuration/initialization script.
#si::sysinit:/etc/init.d/rcS
::sysinit:/etc/init.d/rcS
Route information is here:
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 eth0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:D0:93:00:12:34
inet addr:192.168.2.221 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:41 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:3677 (3.5 kb) TX bytes:0 (0.0 b)
Base address:0x3c00
eth1 Link encap:Ethernet HWaddr 00:D0:93:80:12:34
inet addr:192.168.1.198 Bcast:192.168.1.255 Mask:255.255.255.0
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:100
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Base address:0xe00
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:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
#
Thank you very much again,hope to hear from you soon!
> In message <001001c25e1e$c9c33ac0$7301a8c0 at zhongqx> you wrote:
> >
> > I want to use FEC(100M) and SCC1(10M) interface,but they can not work
> > together.
>
> They can.
>
> > eth0: CPM ENET Version 0.2 on SCC1, 00:d0:93:00:12:34
> > eth1: FEC ENET Version 0.2, FEC irq 3, MII irq 4, addr 00:d0:93:80:12:34
>
> Please be aware that both interfaces use the same MAC address. This
> is ok as long as you don;t try to connect bioth to the same subnet.
>
> > VFS: Mounted root (ext2 filesystem).
> > Freeing unused kernel memory: 40k init
> > init started: BusyBox v0.60.2 (2002.07.18-17:16+0000) multi-call
> > SIOCADDRT: Net
> > work is unreachable
> >
> > ******(What reason ? when this message output?)
>
> Well, it makes little sense to guess how you ifconfig'ed the
> interfaces, please provide more information.
>
> My bet is that you tired to run both ethernet ports in the same
> network, and that you're experiencing a conflict caused by two
> identical MAC addresses.
>
> Wolfgang Denk
>
> --
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> "I find this a nice feature but it is not according to the documen-
> tation. Or is it a BUG?" "Let's call it an accidental feature. :-)"
> - Larry Wall in <6909 at jpl-devvax.JPL.NASA.GOV>
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