The Local Transceiver (Internal)

The four SUNW,qfe channels each provide 10BASE-T or 100BASE-TX networking interfaces, using the PCI FastEthernet and Expansion (PFEX) ASIC or the SBus FastEthernet Parallel SCSI (FEPS) ASIC and a local transceiver. The driver automatically sets the link speed to 10 or 100 Mbps and conforms to the 100BASE-T IEEE 802.3u Ethernet standard. The PFEX ASIC provides the PCI interface and Media Access Control (MAC) functions. The FEPS ASIC provides the SBus interface and MAC functions. The local transceiver, which connects to an RJ-45 connector, provides the physical layer functions.

The local transceiver is capable of all the operating speeds and modes listed in "Auto-Negotiation". The local transceiver performs auto-negotiation with the remote end of the link (link partner) to select a common mode of operation.

The local transceiver also supports a forced mode of operation. You can select the speed and mode using the ndd utility, by editing the /etc/system file, or creating a qfe.conf file in the /kernel/drv directory.