Security and Technology Ramblings…

Under the “there is a first time for everything” theory, the other day I needed to convert a unicast UDP MPEG2 video stream to multicast. Here’s a quick sample on how to do it on a Cisco Router.

In the below example, I’ve got an inbound UDP unicast stream hitting 100.1.4.14 and use a static NAT to convert it to a multicast destination of 233.0.0.1

 

 

 

 

 

 

 

Let me know if you have any thoughts or comments….

!
hostname samplerouterconfig
ip multicast-routing
!
interface FastEthernet0/0
description External Interface Receiving Unicast
ip address 100.1.4.12 255.255.254.0
ip pim dense-mode
ip nat outside
!
interface FastEthernet0/1
description Internal Interface Replicating Multicast
ip address 10.1.200.1 255.255.255.0
ip pim dense-mode
ip nat inside
ip igmp static-group 233.0.0.1
duplex auto
speed auto
!
ip route 0.0.0.0 0.0.0.0 10.1.4.1
!
!
ip nat inside source static 233.0.0.1 100.1.4.14
!
end

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