Membership information for participating computer systems participating in a multi-party conferencing session is distributed by intermittently exchanging link databases with one or more neighbor computer systems. A link database includes one or more link state records, each link state record identifying...http://www.google.com.hk/patents/US20040215667?utm_source=gb-gplus-share專利 US20040215667 - Distributing membership information for multi-party application layer sessions
