Panasonic UF-E1 Service Manual page 170

UF-E1
6.5.3.2. Internet Protocol
The IP (Internet Protocol) operating at the OSI Network layer, is a connectionless protocol that provides dat-
agram service, and IP packets are most commonly referred to as IP datagrams. 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
Version
Time To Live
Terms
Version
Internet Header
Length
Type Of Service
ID
Flags
Fragment Offset
Time To Live
Protocol
Header Checksum
Source Address
Destination Address
Option
Padding
Internet
Type Of Service
Header Length
ID
Protocol
Currently version 4
IP Header field length
Service priority requested by IP Datagram (3 bits are reserved for pre-
cedence)
Identification frame number for upper layer communication
Packet disassembly information
Offset from most significant bit
Decrement the counter until ½0½ every time packet pass over the
router
Upper layer protocol identification number. ie TCP (06h), UDP (11h)
Checksum is used for error checking on the header data
Sender's IP Address
Destination's IP Address
When implemented
Fill bit field to add up to 32 bit
4 byte
Flags
Source Address
Destination Address
Option + Padding (size varies)
Data
IP Datagram
Detail
166
Total Length
Fragment Offset
Header Checksum