| > 一、问题 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] |
