How do I determine ethX is being used for this port?

if one of two ports ethernet card (10GbE) gets connected, how do I know which ethX on linux is corresponding to this port?
Oracle linux 6.3
NC523SFP 10Gb 2-port Server Adapter
HP G5 server
Thanks!
Edited by: 943714 on Sep 25, 2012 7:10 AM

Here is another option:
Find the interrupt of eth0:
<pre>
# grep eth0 /proc/interrupts
*19*: 163728 IO-APIC-fasteoi ehci_hcd:usb1, eth0
</pre>
So it the above example device eth0 uses IRQ 19.
Then query lspci for IRQ 19:
<pre>
lspci -v
00:03.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02)
     Subsystem: Intel Corporation PRO/1000 MT Desktop Adapter
     Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 19
     Memory at f0000000 (32-bit, non-prefetchable) [size=128K]
     I/O ports at d010 [size=8]
     Capabilities: [dc] Power Management version 2
     Capabilities: [e4] PCI-X non-bridge device
     Kernel driver in use: e1000
     Kernel modules: e1000
</pre>
For information about the link:
<pre>
# mii-tool -v eth0
# ethtool -a eth0
</pre>

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How do I determine ethX is being used for this port?

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