HP DS20L - Manual (Page 73)

Remote Management 4-1
Chapter 4
Remote Management
This chapter contains an overview of the remote control features and
describes how remote management is supported.
4.1 Overview
An AlphaServer DS20L system is usually configured in a network cluster with
other rack-optimized nodes. Each system has integrated network interfaces so
that management stations can be used for control rather than duplicating
central management functions on each system. These management stations
provide for remote access to the rest of the systems. DS20L systems include
remote control features to permit remote station access to firmware and
operating software.
Each DS20L system includes two on-board Ethernet controllers, two serial
ports, and up to two PCI add-in adapters. The primary Ethernet controller
supports optional special remote management control functions. (The
wake-on-LAN utility highlighted in this chapter is supported only on the
primary network interface port.) The secondary Ethernet controller is used for
general-purpose network traffic including network management messages. The
dual serial ports are used for firmware and operating system console access
when not using the integrated Ethernet connections for console service. The
add-in PCI adapters are used to enhance general network performance or for
external peripheral devices.
Serial console access is primarily used for diagnostic access in or out of the rack.
In rack-optimized configurations, serial port access is usually managed with
network-capable terminal servers for access to command-line interfaces instead
of remote network console access and management.