multicast problem

[yi-chen]

cisco router 2611xm connect to satellite modem through fast ethernet interface

but can't receive multicast packet from center

when pc conncect directly to modem,everything is ok

show ip pim int count

it seems the router doesn't see any multicast packet on the interface

and the ttl is higher enough for the packet not to be droped

f0/0 fa0/1

pc----------router2611---------------satellite modem-------------------center router

config:

int f0/0

ip address 172.21.5.1 255.255.255.0

ip pim dense-mode

ip igmp static-group 239.16.5.144

int f0/1

ip address 172.21.101.108 255.255.255.252

ip pim dense-mode

ip igmp static-group 239.16.5.144

ip route 0.0.0.0 0.0.0.0 172.21.101.107

ip multicast-routing

[seilsz]

Yi Chen,

What multicast routing protocol is the center router running? Can you send the output from the following commands:

show ip pim interface

show ip mroute

[yi-chen]

all routers run pim dense-mode

and the satallite modem break down the pim connection between routers

it can only forward unicast packet and defined interesting multicast packet

[seilsz]

So there is no PIM neighbor relationship established between the 2611 and the center router?

[yi-chen]

y

sorry,I make a mistake

the satellite modem need to define the multicast source address but I forgot

so the test PC without address defined can't send multicast

btw,multicast flow control in such mixed network seems difficult