多播静态路由引起的循环题目的解决
一、题目： 在r3和r1之间使用了GRE通道，所有的路由器接口配置为sparse-mode,R4 ip为（1.1.4.4）但Ｒ１无法ping通多播源。 二、示意图如下： multicast source -----R5------R3-------R223----R1--e0 ............................................| ............................................| ............................................R4 """""""""""""""""""""""""""""""""""" 三、原配置如下： R1#mtrace 1.1.15.1 150.100.2.1 239.255.8.8 Type escape sequence to abort. Mtrace from 1.1.15.1 to 150.100.2.1 via group 239.255.8.8 From source (?) to destination (?) Querying full reverse path... 0 150.100.2.1 -1 1.1.12.5 PIM -2 1.1.12.3 PIM -3 1.1.16.4 PIM Reached RP/Core -4 1.1.16.3 PIM -5 1.1.16.4 PIM Reached RP/Core -6 1.1.16.3 PIM -7 1.1.16.4 PIM Reached RP/Core -8 1.1.16.3 PIM -9 1.1.16.4 PIM Reached RP/Core -10 1.1.16.3 PIM -11 1.1.16.4 PIM Reached RP/Core -12 1.1.16.3 PIM -13 1.1.16.4 PIM Reached RP/Core -14 1.1.16.3 PIM -15 1.1.16.4 PIM Reached RP/Core -16 1.1.16.3 PIM -17 1.1.16.4 PIM Reached RP/Core -18 1.1.16.3 PIM -19 1.1.16.4 PIM Reached RP/Core -20 1.1.16.3 PIM -21 1.1.16.4 PIM Reached RP/Core -22 1.1.16.3 PIM -23 1.1.16.4 PIM Reached RP/Core -24 1.1.16.3 PIM -25 1.1.16.4 PIM Reached RP/Core -26 1.1.16.3 PIM -27 1.1.16.4 PIM Reached RP/Core -28 1.1.16.3 PIM -29 1.1.16.4 PIM Reached RP/Core -30 1.1.16.3 PIM -31 1.1.16.4 PIM Reached RP/Core -32 1.1.16.3 PIM 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 ! ! ! inte***ce Loopback0 ip address 1.1.1.1 255.255.255.0 ip ospf network point-to-point ! inte***ce Tunnel0 ip address 1.1.103.1 255.255.255.252 ip pim sparse-mode tunnel source Loopback0 tunnel destination 1.1.3.3 ! inte***ce Ethernet0 ip address 1.1.15.1 255.255.255.0 ip pim sparse-mode ! inte***ce Ethernet1 ip address 1.1.11.1 255.255.255.0 ! in 1/3 123下一页尾页
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