Matt,
My system shows the same effect:
# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:199.42.190.162 Mask:255.255.255.240
inet6 addr: fe80::200:ff:fe00:0/10 Scope:Link
UP RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:200273 errors:0 dropped:0 overruns:0 frame:0
TX packets:138492 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:118135116 (112.6 Mb) TX bytes:37468763 (35.7 Mb)
Interrupt:7
It doesn't seem to cause our Cisco router any problems. Are your routing
tables set up to tell the network to route 192.168.x.x through 172.16.64.3?
If not, are you running a dynamic routing protocol on your Linux/390 system?
You should be doing one or the other. The fact that the LCS mode card works
is odd. The fact that the router is not forwarding the packets to the OSA
would seem to imply that the two cards are giving different information to
the router. Does your card in LCS mode have a non-zero MAC address?
Mark Post
-----Original Message-----
From: Matt Lashley/SCO [mailto:[EMAIL PROTECTED]
Sent: Friday, July 25, 2003 5:39 PM
To: [EMAIL PROTECTED]
Subject: OSA Fast Ethernet (OSD) - QDIO mode
Is it normal for ifconfig to display all 0's for the MAC address of an OSA
interface?
eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:172.16.64.3 Mask:255.255.255.248
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP RUNNING MULTICAST MTU:1500 Metric:1
RX packets:108 errors:0 dropped:0 overruns:0 frame:0
TX packets:84 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:7049 (6.8 Kb) TX bytes:8619 (8.4 Kb)
Will this cause problems for the ARP tables/cache of the Cisco router to
which the card is plugged? For instance, I am able to connect directly to
the Linux machine over this interface but anything I try to route through
the machine (192.168.x.x) won't work. Using tcpdump to monitor the traffic
going over the interface verifies that traffic that should be forwarded by
the Cisco router is not.
Strangely, on the same machine after taking down the QDIO interface, I can
bring up a second OSA using LCS, configure it with the IP of the QDIO card
and everything routes to the 192.168.x.x machines just fine.
Maybe I'm missing some maintenance or an OCO patch?
Oh, and by the way, the LCS card, although configured 100Mb/Full Duplex
won't get over 10Mb. -- ? The LAN to which it is connected is 100Mbit/Full
as well.
The Linux machine is a SLES8 guest under VM with the OSA dedicated to it.
Matt Lashley
Idaho State Controller's Office
