IPTV - blocking multicast on WIFI

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''This section explains how to use the DD-WRT GUI to configure DD-WRT supporting multicast IPTV traffic while at the same time enable some LAN ports and Wireless Clients working in parallel.'' ''This section explains how to use the DD-WRT GUI to configure DD-WRT supporting multicast IPTV traffic while at the same time enable some LAN ports and Wireless Clients working in parallel.''
-This works on my WRT54GL V1.1 connecting to T-Home, without using a separate Router for the multicast traffic.+There are 2 ways to achive this. The first is to unbridge the LAN area that shouldnt get flooded with mulicast packets. The second (and imho more elegand) way is to block mulicast traffic to the interfaces which doesnt need it.
= Assumption = = Assumption =

Revision as of 19:20, 22 March 2011

Contents


Introduction

This section explains how to use the DD-WRT GUI to configure DD-WRT supporting multicast IPTV traffic while at the same time enable some LAN ports and Wireless Clients working in parallel.

There are 2 ways to achive this. The first is to unbridge the LAN area that shouldnt get flooded with mulicast packets. The second (and imho more elegand) way is to block mulicast traffic to the interfaces which doesnt need it.

Assumption

In the sample configuration, the TV media receiver is connected to LAN Port 4, and the router Ip is 192.168.1.1. Other configurations work accordingly.

Prerequisites

  1. Ensure that you are at least on DD-WRT 24v1 Firmware, otherwise download the most recent release.
  2. Connect the TV media receiver to Port 4. Connect other LAN connections to Ports 1,2,3

Allow for multicast traffic

  1. Disable (uncheck) "Filter Multicast" on Security-->Firewall

Disable multicast traffic to reach the Wireless adapter

  1. In Wireless-->Basic setting, set "Network Configuration" to "Unbridged", and "Multicast forwarding" to "disabled".
  2. Provide 192.168.3.1 with subnet mask 255.255.255.0 as the IP address for Wireless connections

Setup an additional VLAN

  1. In Setup-->VLANs, check the "tagged" checkboxes for Ports 1,2,3. Then, check the three accoring checkboxes in the VLAN 7 row, uncheck them in the VLAN 0 row, and finally uncheck the "tagged" checkboxes.
  2. Apply the settings and reboot the router

Disable multicast traffic to reach the LAN Ports 1,2,3

  1. In Setup-->Networking, check "Unbridged" for "Network Configuration vlan7", "Multicast forward" to "disable".
  2. Below this entry, provide IP number 192.168.2.1 with subnet mask 255.255.255.0 as the IP address

Enable DHCP for the additional local Networks and final steps

  1. In Setup-->Networking, add two DHCP Servers in the bottom area, one for vlan7, one for eth1 (keep the standard settign for the other fields)
  2. Apply all changes, and reboot the router

Block Multicast via Firewall

Finally, enjoy TV, LAN, and Wireless simultaneously