On Wed, Jul 14, 2010 at 09:51:51AM -0500, Tim Nelson wrote:
Even if the limit were lower, such as 10 physical interfaces as mentioned before, I have to imagine that the host system would have issues dealing with the number of interrupts needed to *PROPERLY* service all of those interfaces in addition to the other system hardware.
There may (or may not) be another problem. As of a couple of years ago, on some Linux variants (didn't try RHEL/CentOS), I was having trouble even getting 6 NICs (on 3 cards) to work if I had IPv6 turned on. 4 NICs worked fine.
Filed some bug reports, and it was evident from the response that very, very few Linux users ever go > 4 eth's on a system. Thus the lack of properly debugged IPv6 support for that then. Fortunately I don't (yet) need IPv6. When I do, it'll be curious to see if the bug is still there.
Whit