ILMI-Based Server Discovery for NHRP (RFC2603)
Original Publication Date: 1999-Jun-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
This memo defines how ILMI-based Server Discovery, which provides a method for ATM-attached hosts and routers to dynamically determine the ATM addresses of servers, shall be used to locate NHRP servers.
Network Working Group M. Davison
Request for Comments: 2603 Cisco Systems
Category: Standards Track June 1999
ILMI-Based Server Discovery for NHRP
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 (C) The Internet Society (1999). All Rights Reserved.
This memo defines how ILMI-based Server Discovery, which provides a
method for ATM-attached hosts and routers to dynamically determine
the ATM addresses of servers, shall be used to locate NHRP servers.
Presently, configuring a host or router to use NHRP  is cumbersome
and error-prone since it requires at least one ATM address to be
statically configured on each host or router in the network.
Further, it is impossible to implement a diskless host to use NHRP
since local configuration is required. ILMI-based Server Discovery,
hereafter referred to as "server discovery," provides a solution to
A brief overview of the Integrated Local Management Interface (ILMI)
and the Service Registry MIB, as defined by the ATM Forum, are
provided in this memo. The reader should consult  for a complete
description of ILMI and this MIB, but the information contained here
is sufficient for an understanding of its use to support NHRP server
2. Integrated Local Management Interface
The Integrated Local Management Interface (ILMI)  provides a
mechanism for ATM-attached devices, such as hosts, routers, and ATM
switches, to transfer management information. It is based on the
Simple Network Management Protocol (SNMP), Version 1, and supports
get, get-next, set and trap operations.
The ILMI specification designates the switch side of the ATM link as
the 'network side' and the host/router side of the ATM link as the '
user side.' The Service Registry MIB, which is outlined in Section 3,
is implmented on the network side and is queried from the user side.
3. ILMI 4.0 Service Registry MIB
Server discovery utilizes the Service Registry MIB defined by the ATM
Forum in ILMI Specification Version 4.0 . To support the existing
framework for IP over ATM, ATM switches must support the Service
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