Linn DS/DSM Network requirements

ALL Linn DS/DSM products support 100Base-T excluding the Klimax DSM/3 that supports 1GBase-T connections and used on standard Networks

Supported networks

Private - standard non-public IPs (192.168 / 10/0, 172.xxx) NATd to internet if required

Domestic - single household setup (no VLANs etc)

Ethernet - IEEE802.3 compliant (No jumbo frames.)

You may think your network is good because you can "ping" your Linn DS/DSM and it can stream music. The fact that you can ping the product and stream music to it confirms it's connected to your network correctly and communicating normally. Discovery, however, relies on a different kind of network traffic — a broadcast announcement the product sends out so that control apps can find it automatically. Some routers, switches, and especially mesh Wi-Fi systems are configured in a way that blocks or filters this type of broadcast traffic, even though they allow regular traffic through without any issue. Check below for points to verify.

Services, ports, protocols

The Services, ports, and protocols are used by the Linn app and players in the network

Services

UPnP & SSDP (Linn DS/DSM discovery and control)

Port 1900 (UDP)

Port 2869 (TCP),

Ports 49152-65535 (both TCP & UDP)

LPEC (Linn Products Event Control)

Port 23 (TCP)

mDNS (Bonjour)

IPV4 224.0.0.251 port 5353 (UDP)

DHCP

Ports 67, 68 (UDP)

ODP (OpenHome Device Protocol)

TCP on an ephemeral port

Managed Switches

Make sure they are programmed to work in Layer-2 mode

Routers/DHCP Servers

Recommend a weekly scheduled reboot of these devices.

Jumbo packet/frames networking

This is not an official standard and is not supported by the Linn DS/DSM.

Multicast or Unicast

If you are using more than six Linn DS/DSM products on the same network and want to share/Songcast the music to other rooms, then make sure the LAN can support multicasting.

If you have issues with your Routers, check:

• QoS is turned OFF (some Routers do not implement this consistently and this may block Linn DS discovery).
• "IGMP Snooping" is turned OFF
• On BTHomeHubs turn "Extended UPnP security" - OFF
• On DLINK, within "Advanced", Multicast Streams - ENABLE
• "Privacy Separator" is turned OFF
• "WMM" is turned OFF
• "Spanning Tree" is turned OFF
• "Flow Control" is turned OFF
• Block multicast / broadcast MAC address is turned OFF
• "Sky Broadband Shield" is turned to "18"

• Speak to a networking specialist who understands the necessary equipment and setup to ensure proper handling of multicast traffic and enable multicast Songcasting

IGMP/IGMP Snooping

If your devices support this service, then make sure this is DISABLED. (This should only be enabled and setup by a “suitably qualified network expert”)

Energy-Efficient Ethernet / Green Energy mode

This is a power saving mode that different manufacturers will have different names for. This will put the router/switch/WAP in to low-power mode that will be “woken” by a network packet. However, this “packet” is only wakes up the socket, but this packet may be a “Discover” packet. This will mean when the socket goes to sleep it makes the Linn DS/DSM undiscoverable, and therefore this option should be disabled.

* "Green mode" is turned OFF

* "Green Ethernet" is turned OFF

* "Power saving" is turned OFF

* "Hibernation" is turned OFF

* "EEE" is turned OFF

* "Energy Efficient Ethernet" is turned OFF

* "802.3az" is turned OFF