SMP111 • Reference Information 98
Multicast IP Addressing for Multiple SMP111 Installations
When multiple SMP111 devices are installed in a system (when the multicast address
is used for push or pull streaming) the streams are managed by the SMP111 to avoid
conflicts.
Pull streaming (RTSP)
The SMP111 can use one of two multicast streaming IP address assignment methods.
If multicast IP addresses for a network are limited, the SMP111 devices can use
unassigned port numbers within the available range (1024 to 65436).
NOTE: To prevent conflicts, always check to see if other devices using the same IP
address have already used a port number before using it in the SMP111.
The following table shows a typical port assignment for multiple SMP111 devices using a
single multicast IP address (RTSP pull streams require four sequential ports).
Device SMPIP Multicast IP Multicast Port
SMP1
192.168.254.10 239.199.188.138 7000 to 7003
SMP2
192.168.254.11 239.199.188.138 7004 to 7007
SMP3
192.168.254.12 239.199.188.138 7008 to 7011
When there are different multicast IP addresses available, there is no need for multiple port
numbers and the port number can remain at the default (63000) as shown in the next table.
Device SMPIP Multicast IP Multicast Port
SMP1
192.168.254.10 239.199.188.138 7000
SMP2
192.168.254.11 239.199.188.139 7000
SMP3
192.168.254.12 239.199.188.140 7000
NOTE: The SMP111 automatically inserts the ending port number when the initial port
number is entered.
Push streaming (TS/UDP, TS/RTP, ES/RTP)
Push streams to a multicast address generally require only two ports, except for ES/RTP
which requires four. When push streaming from multiple SMP111 devices to multicast
addresses, the same IP address rules apply as with pull streaming.
For push streaming, the destination IP and port number are adjusted using the encoder
presets page.
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