DHC working group Baiju V. Patel, Intel Corp. Internet Draft Munil Shah, Microsoft Corp. August 1998 Stephen R. Hanna, Sun Microsystems, Inc. Expires: February 1999 draft-ietf-dhc-multopt-03.txt Multicast Address Allocation Configuration Options Status of this memo This document is an Internet Draft. Internet Drafts are working documents of the Internet Engineering Task Force (IETF), its Areas, and its Working Groups. Note that other groups may also distribute working documents as Internet Drafts. Internet Drafts are draft documents valid for a maximum of six months. Internet Drafts may be updated, replaced, or obsoleted by other documents at any time. It is not appropriate to use Internet Drafts as reference material or to cite them other than as a "working draft" or "work in progress". To learn the current status of any Internet-Draft, please check the 1id-abstracts.txt listing contained in the Internet-Drafts Shadow Directories on ds.internic.net, nic.nordu.net, ftp.isi.edu, or munnari.oz.au. A revised version of this draft document will be submitted to the RFC editor as a Proposed Standard for the Internet Community. Discussion and suggestions for improvement are requested. This document will expire before February 1999. Distribution of this draft is unlimited. Abstract This document describes DHCP options that may be used to provide access to Multicast Address Allocation servers, such as MDHCP servers. 1. Terminology 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. 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. Patel, Shah, and Hanna [Page 1]
Internet Draft draft-ietf-dhc-multopt-03.txt August 1998 o "DHCP server" A DHCP server is an Internet host that returns configuration parameters to DHCP clients. o "MDHCP client" An MDHCP client is an Internet host requesting multicast address allocation services via MDHCP. o "MDHCP server" An MDHCP server is an Internet host providing multicast address allocation services via MDHCP. 2. Multicast Address Allocation Configuration Options The MDHCP protocol [3] allows hosts (known as MDHCP clients) to request multicast address allocation services from multicast address allocation servers (known as MDHCP servers). One way that MDHCP clients communicate with MDHCP servers is by sending multicast messages to an MDHCP Server Multicast Address. This document defines a DHCP option (as described in [1] and [2]) that may be used to configure MDHCP clients with an appropriate MDHCP Server Multicast Address and TTL. 2.1. MDHCP Server Multicast Address option The MDHCP Server Multicast Address option specifies a multicast address and TTL that MDHCP clients SHOULD use to contact MDHCP servers. A DHCP client can obtain this parameter as part of the normal DHCP protocol message exchange or separately via DHCPINFORM. Code Len Multicast Address TTL +-----+-----+-----+-----+-----+-----+-----+ | TBD | 5 | i1 | i2 | i3 | i4 | ttl | +-----+-----+-----+-----+-----+-----+-----+ The code for this option is TBD and the length is 5. 3. References [1] Droms, R., "Dynamic Host Configuration Protocol", RFC 2131, March 1997. Patel, Shah, and Hanna [Page 2]
Internet Draft draft-ietf-dhc-multopt-03.txt August 1998 [2] Alexander, S., and R. Droms, "DHCP Options and BOOTP Vendor Extensions", RFC 2132, March 1997. [3] Patel, B., M. Shah, and S. Hanna, "Multicast address allocation based on the Dynamic Host Configuration Protocol", draft-ietf-malloc-mdhcp-00.txt, August 1998. 4. Authors' Addresses Baiju V. Patel Intel Corp. 2111 NE 25th Ave. Hillsboro, OR 97124 Phone: 503 264 2422 EMail: baiju.v.patel@intel.com Munil Shah Microsoft Corporation One Microsoft Way Redmond, WA 98052 Phone: 425 703 3924 Email: munils@microsoft.com Stephen R. Hanna Sun Microsystems, Inc. 2 Elizabeth Drive, M/S UCHL03-205 Chelmsford, MA 01824 Phone: +1.978.442.0166 Email: steve.hanna@sun.com Patel, Shah, and Hanna [Page 3]
