Auto-Initializing The Roms - Cabletron Systems CSMIM2-16 Installation Manual

Chapter 2: Installing the CSMIM2
2.8

AUTO-INITIALIZING THE ROMS

The CSMIM2 supports the BOOTP and RARP protocols. The ROMs use
these protocols to obtain boot information without requiring any manual
set-up on the CSMIM2.
• 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 ROMs invoke this system of acquiring boot information when a boot
is initiated and the CSMIM2's Internet Address is not initialized. Under
this condition, the CSMIM2 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 CSMIM2 either prompts the user for
the Internet address (if in Set Up mode) or it lights the Attn LED to
indicate the Internet address is not set (if in Normal mode).
For a successful BOOTP retrieval, a bootpd must be running on a host on
the same network as the CSMIM2 and must have the appropriate
information in the bootptab file. The CSMIM2's BOOTP
implementation adheres to rfc951, rfc1048, and rfc1084. Below is a
sample bootptab file entry used to initialize the CSMIM2 named
terminator.
csmimdefault:\
:sm=255.255.255.0:gw=132.245.22.66:\
:hn:vm=auto:to=-18000:
terminator:ht=1:ha=00802d004879:ip=132.245.22.226:tc=csmimde-
fault:
In the previous example:
• sm is the subnet mask;
• gw is the load/ dump gateway address; ht is host type (1=Ethernet);
• ip is the CSMIM2's Internet Address; ha is the CSMIM2's hardware
address (Ethernet Address); and
• vm is the Vendor Magic Cookie.
2-10 CSMIM2 Installation Guide