Re: which NIC is which

[John Telford <John JohnTelford com>]

On Tue, Jul 09, 2002 at 04:54:32PM -0400, Anthony Abby wrote:
> Could you not add eth0 first... then add eth1 after you finish configuring
> the first NIC?  That way there'd be no confusion which was which.
> 
> Anthony

A part of the problem is the Ethernet designation for a NIC, such as
eth0 or eth1, may change when another card is added.

> 
> > -----Original Message-----
> > From: redhat-list-admin redhat com
> > [mailto:redhat-list-admin redhat com]On Behalf Of John Telford
> > Sent: Tuesday, July 09, 2002 4:52 PM
> > To: redhat-list
> > Subject: which NIC is which
> >
> >
> > I'm building routers.  It's difficult to tell in advance which NIC will
> > be assigned eth0 and which will assigned eth1 when using two NICs.  Ping
> > testing usually clears up this simple problem.
> >
> > The identification problem gets worse when adding a third NIC, after
> > sorting out the first two NICs.  Frequently the eth0 or eth1 assignments
> > for the first two NICs change.
> >
> > Of course adding a fourth and fifth NIC multiplies the identification
> > problem.  Yes, some of my routers are supporting five network segments.
> >
> > My question is, what's the algorithm for assigning Ethernet
> > designations?  I know it not placement order in the PCI bus, and I know
> > its not the NIC data-link address.
> >
> > So what is it?
> >
> > Thanks ...John
> > --
> > John Telford - Owner
> > JohnTelford.com LLC
> > 503-292-6865 - fax:503-292-3094
> > john johntelford com - www.johntelford.com
> >
> >
> >
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> 
> 
> 
> 
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-- 
John Telford - Owner
JohnTelford.com LLC
503-292-6865 - fax:503-292-3094
john johntelford com - www.johntelford.com