Protocol Action: Multicast-Scope Zone Announcement Protocol (MZAP) to Proposed Standard
The IESG <iesg-secretary@ietf.org> Thu, 30 December 1999 20:36 UTC
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From: The IESG <iesg-secretary@ietf.org>
Subject: Protocol Action: Multicast-Scope Zone Announcement Protocol (MZAP) to Proposed Standard
Date: Thu, 30 Dec 1999 15:15:33 -0500
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The IESG has approved the Internet-Draft 'Multicast-Scope Zone Announcement Protocol (MZAP)' <draft-ietf-mboned-mzap-06.txt> as a Proposed Standard. This document is the product of the MBONE Deployment Working Group. The IESG contact persons are Bert Wijnen and Randy Bush. Technical Summary Two problems make administrative multicast scoping difficult to deploy and difficult to use: o Misconfiguration is easy. It is difficult to detect scope zones that have been configured so as to not be convex (the shortest path between two nodes within the zone passes outside the zone), or to leak (one or more border routers were not configured correctly), or to intersect in both area and address range. o Applications have no way to discover the scope zones that are relevant to them. This makes it difficult to use administrative scope zones, and hence reduces the incentive to deploy them. The document defines the Multicast-Scope Zone Announcement Protocol (MZAP) for discovering the multicast administrative scope zones that are relevant at a particular location. MZAP also provides mechanisms whereby two common misconfigurations of administrative scope zones can be discovered. Working Group Summary There was no technical or procedural dissent in the working group. In fact, the lack of comment was notable. Protocol Quality This document was reviewed for the IESG by Randy Bush. There is at least one implementation of SLPv2 and the APIs, based on recent (but not the final) drafts. A student at UCLA has implemented the internet-draft on FreeBSD 2.2.6-based, and has started preliminary testing on CAIRN nodes.