QSC MP-M Series Technical Notes

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Revision A—17 April 2019 1QSC Business Music Solutions Technical NotesQSC MP-M Series MixersNetwork setup and troubleshootingThe default settings of a QSC MP-M Series mixer will have it obtain an IP address automatically from a DHCP server, typically in a switch orrouter, once it establishes a network connection. As long as the setup computer is connected to the same network, it and the mixer will beable to communicate via the MP-M Install or MP-M Manage applications.If there is no DHCP server or it fails to respond, the mixer will self-assign a default Link Local address.For an MP-M Series mixer’s default Link Local address information is:• IP Address 169.254.112.112• Subnet Mask 255.255.0.0• Gateway 169.254.44.244Therefore, if there are two or more MP-M Series mixers on a network with no DHCP, their default address settings will cause a confilctbecause they will all try to use the same IP address. It becomes necessary to assign static IP addresses to the individual mixers so they cancoexist on the network.Static IP address assignmentNOTE: Assigning a static address to an MP-M Series mixer requires configuring a valid Gateway Address. This will ensure proper networkcommunication even if all the devices are connected on the same network. For example, on a network that uses a 192.168.1.X domain:• IP Address 192.168.1.20• Subnet Mask 255.255.255.0• Gateway 192.168.1.1NOTE: After you enter the IP address, subnet mask, or gateway address, press Enter. Click Apply to make the settings active.MP-M network troubleshootingFor the network connection, be sure to use the RJ-45 jack labeled ETHERNET.If you are troubleshooting a network connection on an MP-M Series mixer but it does not appear in the device list of the app on the setupcomputer, make sure the security settings of the switch or router are not blocking the mixer’s discovery protocol. These are the MP-MSeries discovery protocol settings:• Discovery Type Bonjour• Protocol mDNS• Discovery Address 224.0.0.251• Network Ports Randomly selected by the mixer / Not definedThe network must allow mDNS functions with this discovery address.The mixer will randomly select multicast ports whenever it boots up or reconnects to the network. Network discovery is not routable andthere are no hard links for it. The MP-M Install and MP-M Manage apps will not connect if discovery is prevented or interrupted.If the mixer is not discoverable and you suspect that network security is blocking its discovery protocol, try connecting the mixer and setupcomputer to a simplified router or switch, or connect the computer and mixer directly. Then verify that the mixer is discoverable.

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