组播路径切换方法及路由器
申请公布号:CN102739504B
申请号:CN201110084053.2
申请日期:2011.04.02
申请公布日期:2015.06.03
发明人:于云福;杨东冬;杜小珍;陈重
分类号:H04L12/707(2013.01)I
主分类号:H04L12/707(2013.01)I
代理人:刘芳
地址:100085 北京市海淀区上地信息路3号
摘要:本发明实施例提供一种组播路径切换方法及路由器。该方法包括:路由器通过单播路由协议感知到单播路径变化时,通过组播路由协议确定在新组播路径的上游路由器与在旧组播路径的上游路由器是否相同;确定在新组播路径的上游路由器与在旧组播路径的上游路由器不相同时,通过单播路由协议判断旧单播路径是否可达;在旧单播路径可达时,通过组播路由协议从旧组播路径的上游路由器继续接收组播流,当从新组播路径的上游路由器接收到组播数据时,切换为从新组播路径的上游路由器接收组播流;在旧单播路径不可达时,通过组播路由协议直接切换为从新组播路径的上游路由器接收组播流。
主权项:一种组播路径切换方法,其特征在于,包括:路由器通过单播路由协议感知到单播路径变化时,通过组播路由协议确定在新组播路径的上游路由器与在旧组播路径的上游路由器是否相同;所述路由器通过所述组播路由协议确定在所述新组播路径的上游路由器与在所述旧组播路径的上游路由器不相同时,通过所述单播路由协议判断旧单播路径是否可达;所述路由器在所述旧单播路径可达时,通过所述组播路由协议从所述旧组播路径的上游路由器继续接收组播流,当从所述新组播路径的上游路由器接收到组播数据时,切换为从所述新组播路径的上游路由器接收组播流;所述路由器在所述旧单播路径不可达时,通过所述组播路由协议直接切换为从所述新组播路径的上游路由器接收组播流。
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