Avaya C460 SMON ユーザーズマニュアル

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Avaya C460 SMON User Guide

TCP/UDP port numbers are included in packets sent over a network using 
either the TCP or the UDP transport layer protocol. The TCP/UDP port 
number indicates how to apply an application layer protocol to the data at 
the receiving end. For example, port 25 is associated with the SMTP 
application protocol, and port 23 is associated with the Telnet application 
protocol. A single application may use several different TCP/UDP port 
numbers for various kinds of communication functions it performs.

There are three ranges of TCP/UDP port numbers:

•

TCP/UDP ports 0 - 1023 - Well Known Port Numbers. Well 
Known Port Numbers represent basic network services that are 
widely available using standard TCP/UDP port numbers. Well 
Known Port Numbers are assigned by the IANA (Internet Assigned 
Numbers Authority). On many platforms, the ways in which these 
TCP/UDP ports can be used are restricted by the system.

•

TCP/UDP ports 1024 - 49151 - Registered Port Numbers. 
Registered Port Numbers represent specific network services that 
have been registered by the IANA at the request of a vendor or 
organization.

•

TCP/UDP ports 49152 - 65535 - Private Port Numbers. Private 
Port Numbers are available for unrestricted use by applications. 
The same Private Port Number might be used for different 
purposes by different applications.

 SNMP over UDP/IP

SNMP packets travelling through the device.

 SNMPtrap over UDP/IP

SNMP trap packets travelling through the device.