Total 0 (*,*,RP) entry Total 1 (*,G) entry Total 1 (S,G) entry Total 1 (S,G,rpt) entry Total 0 FCR entry
Up timer/Expiry timer
(*, 239.1.1.1) Up time: 00:18:45 RP: 2.2.2.2
RPF nbr: 23.0.0.2
RPF idx: gigaethernet1 Flags:
JOIN DESIRED
Upstream State: JOINED Local interface list: gigaethernet0 Joined interface list: Asserted interface list:
(10.0.0.2, 239.1.1.1) Up time: 00:05:21 KAT time: 00:02:10 RPF nbr: 13.0.0.1
RPF idx: gigaethernet2 SPT bit: TRUE Flags:
JOIN DESIRED Upstream State: JOINED Local interface list: Joined interface list: Asserted interface list: Outgoing interface list: gigaethernet0 Packet count 275961
(10.0.0.2, 239.1.1.1, rpt) Up time: 00:05:21 RP: 2.2.2.2 Flags:
RPT JOIN DESIRED PRUNE DESIRED
RPF SGRPT XG EQUAL Upstream State: PRUNED Local interface list: Pruned interface list: Outgoing interface list:
gigaethernet0
R1上的组播路由表： R1#show ip pim mroute IP Multicast Routing Table: PIM VRF Name: Default Total 0 (*,*,RP) entry Total 0 (*,G) entry Total 1 (S,G) entry Total 1 (S,G,rpt) entry Total 0 FCR entry
Up timer/Expiry timer
(10.0.0.2, 239.1.1.1) Up time: 00:29:08 KAT time: 00:00:38 RPF nbr: 0.0.0.0 RPF idx: None SPT bit: TRUE Flags:
JOIN DESIRED COULD REGISTER Upstream State: JOINED Local interface list: Joined interface list: gigabitethernet2 00:15:23/00:03:08 Asserted interface list: Outgoing interface list: gigabitethernet2 Packet count 646014
(10.0.0.2, 239.1.1.1, rpt) Up time: 00:29:08 RP: 2.2.2.2 Flags:
RPF SGRPT XG EQUAL
Upstream State: RPT NOT JOINED
Local interface list: Pruned interface list: Outgoing interface list:
R2：RP上显示已经剪枝掉RPT，以下是截图和显示的全部信息
R2#show ip pim mroute IP Multicast Routing Table: PIM VRF Name: Default Total 0 (*,*,RP) entry Total 1 (*,G) entry Total 1 (S,G) entry Total 1 (S,G,rpt) entry Total 0 FCR entry
Up timer/Expiry timer
(*, 239.1.1.1) Up time: 00:40:22 RP: 2.2.2.2 RPF nbr: 0.0.0.0 RPF idx: None Flags:
JOIN DESIRED
Upstream State: JOINED Local interface list: Joined interface list:
gigabitethernet1 00:40:22/00:03:08 Asserted interface list:
(10.0.0.2, 239.1.1.1) Up time: 00:01:43 KAT time: 00:02:57 RPF nbr: 12.0.0.1
RPF idx: gigabitethernet0 SPT bit: TRUE Flags:
Upstream State: NOT JOINED Local interface list: Joined interface list: Asserted interface list: Outgoing interface list: Packet count 1
(10.0.0.2, 239.1.1.1, rpt) Up time: 00:01:43 RP: 2.2.2.2 Flags:
RPT JOIN DESIRED PRUNE DESIRED
RPF SGRPT XG EQUAL Upstream State: PRUNED Local interface list: Pruned interface list:
gigabitethernet1 00:01:43/00:03:08 Outgoing interface list:
3.3.1. 设置接收端DR设备不切换到SPT。
3.3.1.1. R1是源端路由器，没有*，G表项，就是说没有共享树，
只有SPT。可以看到从G0口（与R2相连）加入的SPT树。
R1#show ip pim mroute IP Multicast Routing Table: PIM VRF Name: Default
