第5回プレゼン資料(PDF)

IGMP (RFC1112)Operation[2] Point-to-pointMR1(192.251.39.1)MR2(192.251.39.11)MH1(192.251.39.23)UH1UH21) IGMP Query message ; MR1 224.0.0.1(all_hosts)TTL=1,IGMP_group_addr=0,dst_IP_addr=224.0.0.1 (all_hosts)src_IP_addr=192.251.39.1 (MR1)2) MR2/MH1 IGMP Query messsageMR2MH1“”3-1) IGMP Report message ; MR2 224.1.2.3 (group address)TTL=1IGMP_groupo_addr=224.1.2.3 ( group_address)dst_IP_addr=224.1.2.3 ( group_address)src_IP_addr=192.251.39.11 (MR2)3-2) IGMP Report message ; MH1 224.1.2.3 (group address)TTL=1IGMP_groupo_addr=224.1.2.3 ( group_address)dst_IP_addr=224.1.2.3 ( group_address)src_IP_addr=192.251.39.23 (MH1)4) goto step 1)32