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Port Number
A port number is combined with the IP address to create an application-specific or
process-specific address. The port number can uniquely identify an application or process
on a computer and thereby enable the computer to share a single Ethernet connection
for multiple requirements. A port number is always associated with the IP address of the
computer, as well as the type of protocol used for network communication.
The SME uses specific ports, but can be configured to meet most requirements. A number
of ports in the range 1024 - 49151 are also reserved for other applications. Consult the lists
here.
Ports in the range 49152 - 65535 are available for private or dynamic use.
For more information on TCP and UDP port numbers, see the following website:
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
NOTE: Ports previously assigned and currently in use by the SME cannot be used
again.
All streaming methods (except TS/UDP push) use multiple port numbers. The following table
shows the number of ports used by each streaming method. Encoder 1 and Encoder 2
streams have different port numbers.
Unicast (per stream)
Multicast
* 4 ports for "Audio/Video", or 2 ports for "Video only"
When the SME 211 ports are configured, only the initial port is entered by the user. The
SME 211 firmware then assigns the multiple port numbers based on the initial port number.
Choosing an IP Address
If the SME 211 and other devices are connected via an independent network, then follow
the guidelines below when choosing IP addresses. However, if the SME 211 and other
devices are being connected to an existing network, advise the network administrator and
ask them to assign suitable addresses.
It is generally recommended that addresses in the private class C range are used
(192.168.0.0 through 192.168.255.255).
There are two rules for choosing IP addresses:
•
The network identifier must be the same for each address.
The host identifier must be unique for each address.
•
Applying these rules to class C addresses, the first three decimal values of the IP addresses
must all be the same, while the last value is used to uniquely identify each device.
The table below shows an example of a valid class C addressing scheme.
Device
Device 1
Device 2
Device 3
NOTE: The host identifiers (
sequential or in any particular order. However, it is recommended that the numbers are
grouped for simplicity.
RTSP (Pull)
4*
4*
IP Address
Subnet Mask
192.168.255.41
192.168.255.42
192.168.255.43
,
, and
41
42
TS/UDP
TS/RTP
(Push)
(Push)
1
2
1
2
255.255.255.0
255.255.255.0
255.255.255.0
in the example above) do not need to be in
43
SME 211 • Reference Information
ES/RTP
(Push)
4*
4*
92
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