1、Less bandwidthLess bandwidthLess load of sourceLess load of sourceLess delayLess delayMore efficientMore efficient主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192.2.2.2192.2.2.2192.3.3.3192.3.3.3假设：假设：A A、B B、C C在多播在多播组组224.1.1.1224.1.1.1中中R1R1R5R5R3R3A AB BC CR5R5R3R3R1R1B BC CA AR3R3R5R5
2、主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192.2.2.2192.2.2.2192.3.3.3192.3.3.3R3R3R5R5主机主机D D192.4.4.4192.4.4.4主机主机E E192.5.5.5192.5.5.5R5R5R2R2R4R4C CR6R6 R3R3B BD D假设：假设：A A、B B、C C、D D、E E在在多播组多播组224.2.2.2224.2.2.2中中R1R1A AE E主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192
3、.2.2.2192.2.2.2192.3.3.3192.3.3.3假设：假设：A A、B B、C C、D D、E E在在多播组多播组224.2.2.2224.2.2.2中中R3R3R5R5主机主机D D192.4.4.4192.4.4.4R5R5R2R2R1R1R4R4C CA AR6R6 R3R3E EB B主机主机E E192.5.5.5192.5.5.5D D主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192.2.2.2192.2.2.2192.3.3.3192.3.3.3假设：假设：A A、B B、C C、D D、E E
4、在在多播组多播组224.2.2.2224.2.2.2中中R3R3R5R5主机主机D D192.4.4.4192.4.4.4R5R5R2R2R1R1R4R4C CA AR6R6 R3R3E EB B主机主机E E192.5.5.5192.5.5.5D D主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192.2.2.2192.2.2.2192.3.3.3192.3.3.3假设：假设：A A、B B、C C、D D、E E在在多播组多播组224.2.2.2224.2.2.2中中R3R3R5R5主机主机D D192.4.4.4192.4.
5、4.4主机主机E E192.5.5.5192.5.5.5R5R5R2R2R1R1R4R4C CA AR6R6 R3R3E EB BD DA AR1R1R2R2R4R4主机主机A A主机主机B B主机主机C CR1R1R2R2R4R4R6R6192.1.1.1192.1.1.1192.2.2.2192.2.2.2192.3.3.3192.3.3.3假设：假设：A A、B B、C C、D D、E E在在多播组多播组224.2.2.2224.2.2.2中中R3R3R5R5主机主机D D192.4.4.4192.4.4.4主机主机E E192.5.5.5192.5.5.5R5R5R2R2R1R1R4R
6、4C CA AR6R6 R3R3E EB BD D151.10.0.0/16151.10.0.0/16198.14.32.0/24198.14.32.0/24S0S0204.1.16.0/24204.1.16.0/24E0E0S0S0E0E0S1S1S2S2R1R1S1S1151.10.0.0/16151.10.0.0/16198.14.32.0/24198.14.32.0/24S0S0204.1.16.0/24204.1.16.0/24E0E0S1S1S0S0E0E0S2S2R1R1S1S1Multicast routing protocolsMulticast routing protocols单播源单播源单播目的单播目的
