Irenis Blankom HDM-4220C, Инструкция по установке и эксплуатации

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Author: RRi Page - 32 - Version 1.3
Date: 10-2019 BLANKOM-HDM-4230_User_Manual_ENv1.3.docx
MPEG2/4 HD-SDI to QAM and IP Encoder User Manual
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
Range for Ephemeral port
The Internet Assigned Numbers Authority (IANA) suggests the range 49152 to 65535 (2
15
+2
14
to 2
16
−1)
for dynamic or private ports.
[1]
Many Linux kernels use the port range 32768 to 61000.
[note 2]
FreeBSD has used the IANA port range
since release 4.6. Previous versions, including the Berkeley Software Distribution (BSD), use ports 1024
to 5000 as ephemeral ports.
[2][3]
Microsoft Windows operating systems through XP use the range 1025–5000 as ephemeral ports by
default.
[4]
Windows Vista , Windows 7 , and Server 2008 use the IANA range by default.
[5]
Windows Server
2003 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.
[6]
Windows Server 2008 with Exchange Server
2007 installed has a default port range of 1025–60000.
[7]
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.
[8][9]
Packet structure
UDP Header
Offsets Octet 0 1 2 3
Octet Bit 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0 0 Source port Destination port
4 32 Length Checksum
The UDP header consists of 4 fields, each of which is 2 bytes (16 bits).
[1]
The use of the fields "Checksum" and
"Source port" is optional in IPv4 (pink background in table). In IPv6 only the source port is optional (see below).
Source port number
This field identifies the sender's port when meaningful and should be assumed to be the port to reply to if
needed. If not used, then it should be zero. If the source host is the client, the port number is likely to be
an ephemeral port number. If the source host is the server, the port number is likely to be a well-known
port number.
[4]
Destination port number
This field identifies the receiver's port and is required. Similar to source port number, if the client is the
destination host then the port number will likely be an ephemeral port number and if the destination host
is the server then the port number will likely be a well-known port number.
[4]
Length
A field that specifies the length in bytes of the UDP header and UDP data. The minimum length is 8 bytes
because that is the length of the header. The field size sets a theoretical limit of 65,535 bytes (8 byte
65,527 bytes of data) for a UDP datagram. However the actual limit for the data length, which is
imposed by the underlying IPv4 protocol, is 65,507 bytes (65,535 − 8 byte UDP header − 20 byte IP
header ).
[4]