组播源和组播接收者在同一台设备同一块单板上,配置pim sm,*.*.0.1这个组播源和接收者都在同一台7503的情况,但是可以正常拉流,表项如下,
表项下RP是null的,
<XinYuanShuRu-S7503X>dis pim routing-table *.120.0.1
Total 651 (*, G) entries; 364 (S, G) entries
Total matched 1 (*, G) entries; 1 (S, G) entries
(*, *.120.0.1)
RP: NULL
Protocol: pim-sm, Flag: WC NIIF
UpTime: 4w:3d
Upstream interface: NULL
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface information:
Total number of downstream interfaces: 1
1: Vlan-interface609
Protocol: igmp, UpTime: 4w:3d, Expires: -
(10.*.255.22, *.*.0.1)
RP: NULL
Protocol: pim-sm, Flag: SPT LOC ACT
UpTime: 3w:3d
Upstream interface: Vlan-interface505
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface information:
Total number of downstream interfaces: 1
1: Vlan-interface609
Protocol: pim-sm, UpTime: 3w:3d, Expires: -
当组播源和组播接收者在同一个单板上的话,是不看RP信息,是看 Downstream interface information信息。
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