Bond problem

mijohnst · 12-19-2007, 05:02 PM

I have a server with two build-in NIC ports as well as a duel port NIC PCI card. I had took the two ports in the card and bound them together and it works great! So, I added another duel port NIC card in and added both its ports into my ifcfg-bind0 config. Now, it's really slow and I'm not sure why... It's kind of intermittent and the network seems to work but with lots of latency.

I'm wondering if when I installed the new board it moved the built-in NIC adapters to eth4 and eth5 which means I configured the bond with the wrong adapters. Is there a way to tell which alias (eth0, eth1, etc) is mapped to which physical port? As always, thanks again!

kzutter · 12-19-2007, 05:40 PM

ifconfig will give you the hardware addresses (MAC) of each listed interface.

Code:

ken@u2:~$ sudo /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:11:D8:14:87:C5
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3175959 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5539015 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:454114067 (433.0 MiB)  TX bytes:3618655898 (3.3 GiB)
          Interrupt:177 Base address:0xc000

mijohnst · 12-19-2007, 09:34 PM

Yup... I looked at that, but how do you know which NIC has which MAC?

What I've kind of come up with (I could be wrong) is looking at the interrupt for each port... since I have two duel port NIC cards, I assume they have to have the same interrupt. So it looks like this for me:

eth0 irq 118
eth2 irq 118
eth3 irq 127
eth5 irq 127

I don't understand how installing a new card could divide the two built-in NIC cards to eth1 and eth4.

I should also add that when I look in the modprobe.conf file, all the cards show up using the same driver...So it looks like I have 6 identical cards even though two are build-in and the other four are on PCI cards.