Conor / Thomas thanks for all the suggestions. These machines will be on remote sites where, so the checking cables will be out. I think locking the MAC addresses to the interface is the best option for me.
From: Thomas Pedoussaut [mailto:thomas at pedoussaut.com]
Sent: 02 December 2009 12:43
To: Brian O'Mahony
Cc: ilug at linux.ie
Subject: Re: [ILUG] NICs in RHEL
On Wed, 2009-12-02 at 12:26 +0000, Brian O'Mahony wrote:
> I am setting up a 2850 to do some testing for moving our code
> repositories over to SAN storage. I have a pe2850 with two onboard
> NICs and a dual port PCI nic. All four ports are coming up as
> Intel e1000 ports. Is there any way of telling from inside the OS
> which exact port eth0,1,2,3 actually are? Ive seen RHEL change port
> around before, and I was just wondering how to check which interface
> corresponds to which physical port, as this will probably be
> important when we implement it.
There is 2 elements there.
1) using mii-tool or ethtool and plugging one by one the interfaces to a
switch you can determinate which is which.
2) in /etc/sysconfig/network-scripts/ifcfg-ethX you can set
HWADDR=XX:XX:XX:XX:XX:XX to the NIC's ethernet address which should
"lock" the link between ethX and the physical port.
thomas at pedoussaut.com
The information in this email is confidential and may be legally privileged.
It is intended solely for the addressee. Access to this email by anyone else
is unauthorized. If you are not the intended recipient, any disclosure,
copying, distribution or any action taken or omitted to be taken in reliance
on it, is prohibited and may be unlawful. If you are not the intended
addressee please contact the sender and dispose of this e-mail. Thank you.
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!