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UDP Broadcast over a VPN connection
Posted by on 27 January 2012 01:18 PM

The Vigor2820 router is used in this example

  1. Set ‘Multicast via VPN’ in each Lan 2 Lan profile

    http://www.draycare.com.au/dfaq/image/VPN/10/vpn_30.JPGhttp://www.draycare.com.au/dfaq/image/VPN/10/vpn_30.JPG
  2. Run the following commands on every router where the Lan to Lan vpns are numbered 1 & 2 (or more – just add more lines).

 

vpn bcrelay set y 1 l2l 1 15184 15184

vpn bcrelay set y 2 l2l 2 15184 15184

sys commit

 http://www.draycare.com.au/dfaq/image/VPN/10/vpn_31.JPG

 

 

Wireshark trace showing broadcast traffic below:

To check any router run the ‘vpn bcrelay status’ command:

http://www.draycare.com.au/dfaq/image/VPN/10/vpn_32.JPG
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