4 Sun Fire V890 Server Owner’s Guide • September 2004
Ethernet Interfaces
The system provides two on-board Ethernet interfaces—one Gigabit Ethernet and
one Fast Ethernet interface. The Gigabit Ethernet interface operates at 1000 megabits
per second (Mbps). The Fast Ethernet interface can operate at 10 or 100 Mbps and
negotiates automatically with the remote end of the link (the link partner) to select a
common mode of operation.
Additional Ethernet interfaces or connections to other network types can be
provided by installing the appropriate PCI interface cards. Multiple network
interfaces can be combined with multipathing software to provide hardware
redundancy and failover capability. Should one of the interfaces fail, the software
can automatically switch all network traffic to an alternate interface to maintain
network availability. For more information about network connections, see
“Configuring Network Interfaces” on page 89.
Serial Ports and System Console
The Sun Fire V890 server provides two serial communication ports, which are
accessed through a single, shared DB-25 connector located on the system rear panel.
The primary port is capable of both synchronous and asynchronous communication,
while the secondary port is asynchronous only. An optional serial port splitter cable
is required to access the secondary serial port. For more information, see “About the
Serial Ports” on page 67.
The rear panel also provides two Universal Serial Bus (USB) ports for connecting
USB peripheral devices such as modems, printers, scanners, digital cameras, or a
Sun Type-6 USB keyboard and mouse. The USB ports support both isochronous
mode and asynchronous mode and enable data transmission at speeds of 1.5 and
12 Mbps. For additional details, see “About the USB Ports” on page 68.
The local system console device can be either a standard ASCII character terminal or
a local graphics console. The ASCII terminal connects to one of the system’s two
serial ports, while a local graphics console requires installation of a PCI graphics
card, monitor, USB keyboard, and mouse. You can also administer the system from a
remote workstation connected to the Ethernet or from a Sun Remote System Control
(RSC) console.
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