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2-21Remote Annex 2000 Hardware Installation Guide

Chapter 2 Installing the Remote Annex 2000

Auto-initializing the ROMs

The Remote Annex 2000 is distributed without an IP address or

preferred load host (UNIX/IP, IPX, or MOP) deﬁned in ROM. When

the device is booted, the Remote Annex 2000 attempts to auto-

initialize its ROMs using BOOTP (bootstrap protocol) and RARP

(Reverse Address Resolution Protocol).

The Remote Annex 2000 supports the BOOTP and RARP protocols.

Use these protocols to automatically obtain boot information from a

UNIX host without requiring any manual set-up on the Remote

Annex 2000.

❑ BOOTP 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 maps a hardware address into an Internet address.

The ROMs invoke this system of acquiring boot information when a

boot is initiated and the Remote Annex 2000’s Internet address is not

initialized. Under this condition, the Remote Annex 2000 ﬁrst tries to

get boot information via BOOTP or RARP.

If BOOTP and RARP fail, the Remote Annex 2000 attempts to load an

image by transmitting an IPX advertisement request for service and

a MOP multicast boot request.

If all requests fail, the Remote Annex 2000 will return to the ROM

monitor (if in Test mode) or continue the auto-initializing procedure

indeﬁnately (if in normal mode).

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Bay Networks 5391 Guide d'installation Page 55