Re: How to order eth0, eth1, ... with Tornado cards?

Donald Becker <[email protected]>
Newsgroups gmane.linux.drivers.vortex.devel
Message-ID <[email protected]>
On Mon, 12 May 2003, Thomas Gebhardt wrote:

> > It's possible to rename network interfaces, but that is a Very Bad Idea.
> 
> Could you elaborate on that? Why is that a very bad idea?

Many reasons:
   The detection messages will not match later usage
   Removing and adding new interfaces and modules
   Calling the rename program more than once

> Some boundary conditions:
> 
> * the out-of-band processor on the motherboard only listens to
> one of the NICs, so I cannot merely swap the cables.

This is very common.
  -  Only a few NIC chip models from 3Com and Intel support the
  out-of-band feature needed for IPMI and other management processors.
  - Gb Ethernet NICs consume too much power for Wake-On-LAN
  - Until recently Gb Ethernet NIC did not have PXE implementations

> * Obviosly there is no way to change IRQ/memory address within
> the BIOS or deactivate the unused NIC.

Many BIOSes provide a way to deactivate on-board NICs.  In a different
section they may provide a way to influence the IRQ assignments
(although sometimes not directly).

-- 
Donald Becker				[email protected]
Scyld Computing Corporation		http://www.scyld.com
914 Bay Ridge Road, Suite 220		Scyld Beowulf cluster system
Annapolis MD 21403			410-990-9993

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