Layer 3 Technologies - Layer 3 multicast - Implement and troubleshoot IPv4 protocol independent multicast

3 important questions on Layer 3 Technologies - Layer 3 multicast - Implement and troubleshoot IPv4 protocol independent multicast

What is the command to check if an interface is multicast enabled?


R1#show ip pim interface

Address          Interface                Ver/   Nbr    Query  DR     DR
                                          Mode   Count  Intvl  Prior
192.168.1.1      GigabitEthernet0/0       v2/D   1      30     1      192.168.1.2

D=dense mode

What does SSM solve? 3

-Overlapping multicast addresses (same multicast address/different source address)
-Denial of service attack (check source address)
-Deployment complexity; deployment of RP are not needed, because source adddress are already known

What is the command to deny outgoing multicast stream 231.1.1.1 from 192.168.1.1 on interface gi0/0?

(config)# access-list extended filter-multicast
deny ip host 192.168.1.1 host 231.1.1.1
permit ip any any

(config-if)ip multicast boundary filter-multicast out  

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