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Booting the Remote Access Concentrator
Chapter 2
Installing the Model 5399 Remote Access Concentrator Module
You can boot the operational software by downloading the image from a
host system or another Model 5399 Remote Access Concentrator, or by
using the image contained in Flash memory (self-boot). However, before
actually booting the unit, you must first initialize the IP address
parameters either manually or by using the auto-initialize feature. The
following sections describes the two methods of initializing the IP address
parameters, and the various boot methods.
Auto-initializing the IP Address Parameters
The Remote Access Concentrator is distributed without an IP address or
preferred load host defined in ROM. When the device is booted, the
Remote Access Concentrator attempts to auto-initialize itself using
BOOTP (bootstrap protocol) and RARP (Reverse Address Resolution
Protocol).
This method of initializing the IP address parameters is
generally done when booting from a host system (not when
self-booting).
The Remote Access Concentrator supports the BOOTP and RARP
protocols. Use these protocols to obtain boot information from a UNIX
host without requiring any manual set-up on the Remote Access
Concentrator.
•
BOOTP allows a diskless client to determine its IP address,
the IP address of the server, and the name of the file to be
loaded into memory.
•
RARP maps a hardware address into an IP address.
The ROMs invoke this system of acquiring boot information when a boot
is initiated and the Remote Access Concentrator is not initialized. Under
this condition, the Remote Access Concentrator first tries to get boot
information via BOOTP or RARP.
Nortel Networks 5399 Access Switch Hardware Installation Guide
2-23
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Troubleshooting
