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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 [default] -2 1.1.12.3 PIM [default] -3 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -4 1.1.16.3 PIM [default] -5 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -6 1.1.16.3 PIM [default] -7 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -8 1.1.16.3 PIM [default] -9 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -10 1.1.16.3 PIM [default] -11 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -12 1.1.16.3 PIM [default] -13 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -14 1.1.16.3 PIM [default] -15 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -16 1.1.16.3 PIM [default] -17 1.1.16.4 PIM Reached RP/Core [1.1.15.0/24] -18 1.1.16.3 PIM [default] -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 ! ! ! 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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