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Title : Scoping Filters for Source-Specific Multicast
Author(s) : H. Holbrook
Filename : draft-holbrook-ssm-scoping-00.txt
Pages : 9
Date : 2003-10-22
This document describes a method of providing scope-limited Source-
Specific Multicast (SSM) channels by filtering at boundary routers. The filtering prevents SSM traffic from being forwarded through a scope
boundary. Each administrative domain that wishes to enforce scoping can choose the sub-range of SSM channels that it wishes to scope -- no
globally-scoped address range is defined. The method described here
does not require extending the current SSM range allocation to include a new 'scoped SSM' range. The method described is primarily intended to provide scoping for IPv4 SSM channels, since IPv6 integrates multicast scoping into the basic addressing architecture.
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