Difference between revisions of "Multicast Filtering"

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<span style="color:red"><b>Multicast filtering used to be a requirement with larger systems due to limited Wifi bandwidths.
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<u>However, as Ethernet networks have evolved this requirement is no longer relevant.</u></b> </span><br>
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IGMP Snooping used to be a requirement for larger system. However with improved network standards and found to cause other issues, this is also no longer a necessity and should be <b>DISABLED</b>
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== Background ==
 
== Background ==
Whilst [[Songcast|Songcasting]]  in '''large-scale mode''', Linn DS players generate significant amounts of [http://en.wikipedia.org/wiki/Multicast 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.
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<del>[[Songcast|Songcasting]]  in '''large-scale mode''', Linn DS players generate significant amounts of [http://en.wikipedia.org/wiki/Multicast 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 </del>
  
 
== Problem ==
 
== Problem ==
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* All DS players which are participating large-scale Songcast must use wired network paths between themselves.
 
* 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.
 
* The network traffic must be filtered to ensure that Multicast traffic is not sent over the wireless network.
** This uses a process known as [http://en.wikipedia.org/wiki/IGMP_snooping IGMP snooping]
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* <u>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</u>
 
 
=== IGMP Snooping ===
 
This is a feature of network equipment, and may require an upgrade to the network infrastructure to operate successfully and prevent wireless network issues
 
 
 
==== WAP (or ''all-in-one'' box) ====
 
* Enable IGMP snooping in the options
 
 
 
==== Managed Switch ====
 
* Enable IGMP snooping  in the options
 
* Ensure network path between DS players and WAP go through the switch
 
 
 
=== Tested Devices ===
 
The following devices have been tested and shown to work. Note that the hardware and firmware of these devices is under the control of their respective manufacturers and may change from what was tested
 
 
 
* WAP
 
** Dlink DWL3200AP (Firmare 2.55 or later)
 
* ''All-in-one''
 
** Buffalo WHR-G300N AirStation (Firmware V1.82/1.85)
 
** ZyXEL NBG-417N
 
** ZyXEL NBG-4615 (Fimware 1.00(BWQ.2)C0 )
 
** Billion BiPAC 6200 NXL
 
** DLINK DIR-655/B (Firmware  2.00 , 12, Aug, 2010)
 
*** (Advanced - Enable Multicast Streams)
 
* Managed Switch
 
** Cisco (Linksys) SLM2008
 
** Cisco SG300-10  [http://docs.linn.co.uk/wiki/images/e/ef/Cisco_SG300_IGMP_setup.pdf Setup
 
example]
 
** ZyXEL ES-2108
 
** ZyXEL GS2200
 
** HP Procurve 2510-24G (J9279A)
 
 
 
* Apple AirPort Extreme was tested and does '''NOT''' work
 
 
 
 
 
  
=== Customer/Retailer device reports ===
 
This information is supplied to Linn Products by Retailers/Customer.
 
Linn Products has not tested any of these devices
 
  
* Fritzbox  reported having issues with Apple broadcasts
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Latest revision as of 11:13, 10 November 2020

Multicast filtering used to be a requirement with larger systems due to limited Wifi bandwidths.
However, as Ethernet networks have evolved this requirement is no longer relevant. 
IGMP Snooping used to be a requirement for larger system. However with improved network standards and found to cause other issues, this is also no longer a necessity and should be DISABLED