437
JAN 2006
Ver. 5.2
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
9.3.3.
Internet Protocol
The IP (Internet Protocol) operating at the OSI Network layer, is a connectionless protocol that provides
datagram service, and IP packets are most commonly referred to as IP data grams.
It performs the following typical functions:
1. Identifies the IP address
2. Packet disassembly and reassembly of the IP datagram
3. Routing of the IP address
Terms
Detail
Version
Currently version 4
Internet Header
Length
IP Header field length
Type Of Service
Service priority requested by IP Datagram (3 bits are reserved for
precedence)
ID
Identification frame number for upper layer communication
Flags
Packet disassembly information
Fragment Offset
Offset from most significant bit
Time To Live
Decrement the counter until 0 every time packet pass over the router
Protocol
Upper layer protocol identification number. ie TCP (06h), UDP (11h)
Header Checksum
Checksum is used for error checking on the header data
Source Address
Sender’s IP Address
Destination Address
Destination’s IP Address
Option
When implemented
Padding
Fill bit field to add up to 32 bit
Version
Internet
Header Length
Type Of Service
Total Length
4 byte
Fragment Offset
Flags
ID
Time To Live
Protocol
Header Checksum
Source Address
Destination Address
Padding (size varies)
Data
IP Datagram
Summary of Contents for DP-3530
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