Multicast Filtering

Background

Whilst Songcasting in large-scale mode, Linn DS players generate significant amounts of Multicast traffic on the network. Many consumer grade network switches, including many all-in-one router/switch/WAP units will broadcast this Multicast traffic to ALL devices on the network, rather than just those which have requested it.

Problem

This Multicast traffic may cause the WAP to be overloaded

• wireless network malfunctions and becomes unreliable
• unable to connect to the wireless network.

Solution

• All DS players which are participating large-scale Songcast must use wired network paths between themselves.
• The network traffic must be filtered to ensure that Multicast traffic is not sent over the wireless network.
  • One process known as IGMP snooping may work, however due to different manufacturers implementations & improvements, may cause other issues. A network specialist will be able to setup other, more reliable, solutions.
• We recommend that the system be installed by a 'networking specialist' who understands the necessary equipment and setup to ensure proper handling of multicast traffic

.