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Appendix
FAQ
Network
Question
: In a Point to Point environment how should the MX4 or MX2 and MXE+ be
configured?
Answer:
First, on the networking front be sure that both the MX4/MX2 and MXE+ are set
for static IP with addresses on the same subnet. ZeeVee would recommend RTP for P2P
installations. RTP has more timing and synchronization information built into the protocol.
Question
: In a network environment how best should the MX4/MXE+ be configured?
Answer:
In a network environment, the ZyPerMX4/MX2 should be configured for UDP/
RTP and multicast.
Question
: How does channel beaconing work?
Answer:
The ZV channel beacon uses the 239.13.1.19 multicast address. The MX4/MX2
uses this address to publish its channels across the network. In a single layer 2 network
this should always work. In a routed layer 3 network, this multicast address needs to be
added to the router’s forwarding table explicitly. By default, routers will not forward this
address. The actual command to do this varies by router.
Question:
What is included in the beacon signal?
Answer:
The beacon includes the multicast group, port and source IP address.
Question:
What other Network protocols are required to support the ZyPerMX4/MXE+?
Answer:
For an installation of more than a couple of MX4/MX2 sources, the layer 2
Ethernet switch needs to be a smart switch that supports IGMP and multicast traffic
management ands vary by vendor.
Question:
Should every MX4/MX2 stream in the system be configured with a different
multicast address? (UDP and RTP streaming)
Answer
: Each MX4/MX2 stream needs to be configured for a different multicast address
for proper stream bandwidth management. Network switches filter based on the IP
multicast address only. If multiple MX4/MX2 streams are configured with the same
multicast address with different ports, all the packets with that multicast address will be
forwarded to any MXE+’s tuned to any one of those channels. This will overwhelm the
Ethernet processing on the MXE+ and cause video artefacts.
Question:
What is the range of multicast addresses that can be used by the MX4/MX2?
Answer:
The full range of multicast addresses is from 224.0.0.0 to 239.255.255.255