Solaris 8 (Intel Platform Edition) Device Configuration Guide

100-Mbps Ethernet Performance

Some PCI motherboards contain DMA chipsets that are unable to support 100-Mbps Fast Ethernet. The Solaris environment does not support 100-Mbps PCI network operation on systems containing the slow chipsets. This problem affects PCI cards only.

These chipsets are known to exhibit this problem:

These chipsets do not exhibit this problem:

In particular, PCI cards supported by the dnet and iprb drivers don't perform well on machines with the problem chipsets. You must decide whether the performance on a particular machine is adequate for the intended purpose.