I'm attempting to convert broadcast traffic on one lan segment into multicast, route it to another segment and then convert it back to broadcast again.
My problem occurs in the last step when the multicast traffic is not converted back to broadcast. I can see the multicast traffic makes it to the destination lan segment when I use wireshark. The topology is below and configs attached.
b'cast-src(10.71.10.2/24) -> Router1 -> Router2 -> dest-lan(192.168.10.0/24)
Any help would be greatly appreciated.
on router2 remove
ip igmp join-group 18.104.22.168
under interface f0/1
otherwise traffic is sent to cpu (process switched)
being in pim sparse-dense-mode it should not be necessary
Notice also that the original TTL of the broadcast packet has to be > 1 as explained in usage guidelines of command
ip multicast helper-map
otherwise traffic can be dropped for TTL expired.
you can use the ttl option on the first-hop router to increase the ttl of multicast packets.
This can be helpful but I didn't try this option.
Hope to help