Method for realizing VPN multicast
Title：
Method for realizing VPN multicast
Application Number：
 200610141164
Application Date：
 2006/10/13
Announcement Date：
 2007/03/28
Pub. Date：
Publication Number：
 1937593
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04L 12/56
Applicant(s)：
 Chinese Mobile Communication Group Corp.
Inventor(s)：
Key Words：
 realizing method, VPN, multicast
Abstract：
 The invention relates to a public network multicast issuing tree matching method, comprising: group management router calculates each covering degree value of the current private network multicast group in each existing public network multicast issuing tree; judging whether there is a public network multicast issuing tree whose covering degree value is greater than covering degree threshold: if yes, judging whether there is a unique issuing tree with the maximum covering degree: if yes, selecting the public network multicast issuing tree; if not, judging whether there is a unique static issuing tree: if yes, selecting the static issuing tree; if not, judging whether there is a unique most-quoted issuing tree: if yes, selecting the issuing tree; if not, selecting the earliest built public network multicast issuing tree. And it also relates to a VPN multicast implementing method, selecting matched tree or newly building a tree. And it reduces bandwidth waste.
Claim：
Priority：
PCT：
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A method to realize VPN multicast




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