Network Working Group R. Droms
Request for Comments: 2242 Bucknell University
Category: Standards Track K. Fong
Novell
November 1997
NetWare/IP Domain Name and Information
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (1997). All Rights Reserved.
1.0 Abstract
The Dynamic Host Configuration Protocol (DHCP) [RFC 2131] provides a
framework for passing configuration information to hosts on a TCP/IP
network. DHCP includes options for specific configuration parameters
[RFC 2132]. This document defines options that carry NetWare/IP
domain name and NetWare/IP sub-options to DHCP clients.
1.1 Requirements
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC 2119].
1.2 Terminology
This document uses the following terms:
o "DHCP client"
A DHCP client is an Internet host using DHCP to obtain
configuration parameters such as a network address.
Droms & Fong Standards Track [Page 1]RFC 2242 NetWare/IP Domain Name and Information November 1997
o "DHCP server"
A DHCP server is an Internet host that returns configuration
parameters to DHCP clients.
2. The NetWare/IP Domain Name option
This option code is used to convey the NetWare/IP domain name used by
the NetWare/IP product. The NetWare/IP Domain in the option is an NVT
ASCII [RFC 854] string whose length is inferred from the option 'len'
field.
The code for this option is 62, and its maximum length is 255.
Code Len NetWare/IP Domain Name
+-----+-----+------+------+------+-----
| 62 | n | c1 | c2 | c3 | ...
+-----+-----+------+------+------+-----
The 'len' field gives the length of the NetWare/IP Domain Name.
3. The NetWare/IP Information option
The NetWare/IP option code will be used to convey all the NetWare/IP
related information except for the NetWare/IP domain name.
The code for this option is 63, and its maximum length is 255. A
number of NetWare/IP sub-options will be conveyed using this option
code. The 'len' field for this option gives the length of the option
data, which includes the sub-option code, length and data fields.
Each sub-option contains in sequential order, a one byte sub-option
code, a one byte length, and an optional multiple byte value field.
The sub-option length gives the length of the value field for the
sub-option. The example below illustrates the use of the 'len' and
sub-option length fields in this option.
One and only one of the following four sub-options must be the first
sub-option to be present in option 63 encoding. Each of them is
simply a type length pair with length set to zero.
Sub-options:
NWIP_DOES_NOT_EXIST (code 1)
The responding DHCP server does not have any NetWare/IP
information configured.
Droms & Fong Standards Track [Page 2]RFC 2242 NetWare/IP Domain Name and Information November 1997
NWIP_EXIST_IN_OPTIONS_AREA (code 2)
All NetWare/IP information is present in the 'options' area of the
DHCP response packet.
NWIP_EXIST_IN_SNAME_FILE (code 3)
All NetWare/IP information is present in the 'sname' and, if
necessary, 'file' fields of the DHCP response packet. If used, the
following DHCP server behavior is required: within the 'options'
area, option 63 is present with its length field set to 2. The
first byte of the value field is set to NWIP_EXIST_IN_SNAME_FILE
tag and the second byte is set to zero. Both option 62 and option
63 will be placed in the area covered by the sname and file
fields. Option 62 is encoded normally. Option 63 is encoded with
datatracker.ietf.org