多播静态路由引起的循环问题的解决

　　-19 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-20 1.1.16.3 PIM [default]

　　-21 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-22 1.1.16.3 PIM [default]

　　-23 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-24 1.1.16.3 PIM [default]

　　-25 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-26 1.1.16.3 PIM [default]

　　-27 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-28 1.1.16.3 PIM [default]

　　-29 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-30 1.1.16.3 PIM [default]

　　-31 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24]

　　-32 1.1.16.3 PIM [default]

　　R1#

　　04:55:18: MRT: Update (*, 224.0.1.40), RPF Null, PC 0x354F1F4

　　R1#sh run

　　Building configuration...

　　Current configuration : 1546 bytes

　　!

　　version 12.1

　　no service single-slot-reload-enable

　　service timestamps debug uptime

　　service timestamps log uptime

　　no service password-encryption

　　!

　　hostname R1

　　!

　　logging rate-limit console 10 except errors

　　!

　　ip subnet-zero

　　no ip finger

　　no ip domain-lookup

　　!

　　ip multicast-routing

　　cns event-service server

　　!

　　!

　　!

　　interface Loopback0

　　ip address 1.1.1.1 255.255.255.0

　　ip ospf network point-to-point

　　!

　　interface Tunnel0

　　ip address 1.1.103.1 255.255.255.252

　　ip pim sparse-mode