Auto-initializing the ROMs

2.7AUTO-INITIALIZING THE ROMS

The CSMIM-T1 is distributed without an IP address or preferred load host (UNIX/IP or MOP) defined in ROM. When the device is booted, the CSMIM-T1 attempts to auto-initialize its ROMs using BOOTP (bootstrap protocol) and RARP (Reverse Address Resolution Protocol).

The CSMIM-T1 supports the BOOTP and RARP protocols. The ROMs use these protocols to obtain boot information without requiring any manual set up on the CSMIM-T1.

BOOTP is a bootstrap protocol that allows a diskless client to determine its Internet address, the Internet address of the server, and the name of the file to be loaded into memory.

RARP (Reverse Address Resolution Protocol) maps a hardware address into an Internet address.

The ROM invokes these methods of acquiring boot information when a boot is initiated and the CSMIM-T1’s Internet Address is not initialized. Under this condition, the CSMIM-T1 first tries to get boot information via BOOTP; if BOOTP fails, it tries to get boot information via RARP. If neither protocol is successful, the CSMIM-T1 attempts to load an image by transmitting an IPX advertisement request for service and a MOP multicast boot request. Although it will attempt to load an IPX image, the module WILL NOT BOOT FROM IPX.

If all requests fail, the CSMIM-T1 will return to the ROM Monitor (if in test mode) or continue the auto initializing procedure indefinitely (if in normal mode).

CSMIM-T1 Hardware Installation Guide

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Cabletron Systems CSMIM-T1 manual AUTO-INITIALIZING the Roms