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Specifications are subject to change without notice. - 13 - BLANKOM MPE 4400 EN 2020 V1.1
MPE-4400
http://www.iana.org/assignments/multicast-addresses/multicast-
Choosing a UDP port number for multicast streams is also important. Even if you use a
different multicast IP for each of your streams, we strongly recommend using different UDP port
numbers as well. This is because a server and all software running on the server receives ALL
multicast traffic on an open port and extra processing is required to filter out the required traffic. If
the each stream arrives on a different port, the server can safely ignore any traffic on ports that are
not open. Port numbers MUST be chosen so that don't clash with any existing services or
ephemeral ranges. The ephemeral range for Windows Vista, 7, 2008 is 49152 to 65535, for older
Windows it is 1025 to 5000 and for Linux it is 32768 to 61000. For more information on Windows
see
http://support.microsoft.com/kb/929851
Care should also be taken to avoid system ports 0 to
http://www.iana.org/assignments/service-names-port-numbers/service-names-port-
Generally one of the unassigned You Ports (1024-49151) should be used, you can run
the netstat -abn (as admin under windows) command to see which ports are currently in use.
REGISTERED PORT
A registered port is a
(a sub-address defined within the
, in the
range 1024–49151) assigned by the
Internet Assigned Numbers Authority
Corporation for Assigned Names and Numbers
(ICANN) before March 21, 2001,
before 1998) for use with a certain protocol or application.
Ports with numbers 0–1023 are called system or well-known ports; ports with numbers 1024-
49151 are called you or registered ports, and ports with numbers 49152-65535 are called dynamic
and/or private ports.
Both system and you ports are used by transport protocols (TCP, UDP, DCCP,
SCTP) to indicate an application or service.
Ports 0–1023 – system or
Ports 1024–49151 – you or registered ports
Ports >49151 – dynamic / private ports
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
RANGE FOR EPHEMERAL PORT
Internet Assigned Numbers Authority
(IANA) suggests the range 49152 to 65535 (2
15
+2
14
to 2
16
−1)
for dynamic or private ports.
use the port range 32768 to 61000.
since release 4.6. Previous versions, including the
Berkeley Software Distribution
5000 as ephemeral ports.
operating systems through XP use the range 1025–5000 as ephemeral ports by
default.
, and
use the IANA range by default.
uses the range 1025–5000 by default, until Microsoft security update MS08-037 from 2008 is installed,
after which it uses the IANA range by default.
Windows Server 2008 with Exchange Server 2007 installed
has a default port range of 1025–60000.
In addition to the default range, all versions of Windows since
Windows 2000 have the option of specifying a custom range anywhere within 1025–65535.