TCPIP

TCP/IP Transmission Control Protocol / Internet Protocol

TCP/IP & OSI ,[object Object],[object Object]

Ethernet - A Real Data-Link Layer ,[object Object],[object Object],[object Object]

Ethernet ,[object Object],[object Object],[object Object],[object Object],[object Object]

CSMA/CD C arrier S ense M ultiple A ccess with C ollision D etection ,[object Object],[object Object],[object Object]

An Ethernet Frame ,[object Object],[object Object],8 bytes 6 6 2 0-1500 4 Preamble Destination Address Source Address Len CRC DATA

Ethernet Addressing ,[object Object],[object Object]

Internet Protocol The IP in TCP/IP ,[object Object],[object Object],[object Object]

IP Datagrams ,[object Object],[object Object],[object Object],An IP packet is called a datagram

IP Addresses ,[object Object],[object Object],Rensselaer

IP Addresses ,[object Object],[object Object]

IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],IPv4 (version 4)

The four for mats of IP Addresses Class A B C D 0 NetID 10 110 NetID 1110 Multicast Address HostID NetID HostID HostID 8 bits 8 bits 8 bits 8 bits

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network and Host IDs ,[object Object],[object Object],[object Object]

IP Addresses ,[object Object],[object Object],[object Object],[object Object],CS has a class B network

Host and Network Addresses ,[object Object],[object Object],[object Object]

IP Broadcast and Network Addresses ,[object Object],[object Object],[object Object]

Subnet Addresses ,[object Object],[object Object],10 NetID SubnetID HostID

Subnetting router Subnet 1 128.213.1.x Subnet 2 128.213.2.x Subnet 3 128.213.3.x

Subnetting ,[object Object],[object Object],[object Object]

Mapping IP Addresses to Hardware Addresses ,[object Object],[object Object],[object Object],[object Object]

Reverse Address Resolution ,[object Object],[object Object],[object Object]

ARP ,[object Object],[object Object],[object Object],Arp Arp!

ARP (cont.) ,[object Object],[object Object]

ARP conversation HEY - Everyone please listen! Will 128.213.1.5 please send me his/her Ethernet address? not me Hi Green! I’m 128.213.1.5, and my Ethernet address is 87:A2:15:35:02:C3

RARP conversation HEY - Everyone please listen! My Ethernet address is 22:BC:66:17:01:75. Does anyone know my IP address ? Hi Green! Your IP address is 128.213.1.17 . not me

Services provided by IP ,[object Object],[object Object],[object Object],[object Object],[object Object]

IP Datagram 1 byte 1 byte 1 byte 1 byte VERS HL Fragment Offset Fragment Length Service Datagram ID FLAG TTL Protocol Header Checksum Source Address Destination Address Options (if any) Data

IP Datagram Fragmentation ,[object Object],[object Object],[object Object]

IP Flow Control & Error Detection ,[object Object],[object Object]

ICMP Internet Control Message Protocol ,[object Object],[object Object],[object Object]

ICMP Message Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IP/BYE-BYE ,[object Object],[object Object]

Transport Layer & TCP/IP ,[object Object],[object Object],[object Object]

Process Layer Transport Layer Network Layer Data-Link Layer ICMP, ARP & RARP TCP UDP IP 802.3 Process Process

UDP User Datagram Protocol ,[object Object],[object Object],[object Object],[object Object]

Ports ,[object Object],[object Object],[object Object],Ports spelled backwards is strop ... Coincidence? (I think not!)

Ports Host A Host B Process Process Process Process Process Process

UDP ,[object Object],[object Object],[object Object],[object Object],UDP Datagram Format The term datagram is also used to describe the unit of transfer of UDP! Source Port Destination Port Length Checksum Data

TCP Transmission Control Protocol ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Connection-Oriented ,[object Object],[object Object],[object Object]

Reliable ,[object Object],[object Object],Reliable does not mean that things don't go wrong, it means that we find out when things go wrong.

Byte Stream ,[object Object],[object Object],Somebody needs to do this since IP is delivering all the data, it's just that the application layer doesn't need to do this!

Buffering ,[object Object],[object Object]

Full Duplex ,[object Object],[object Object]

TCP Ports ,[object Object],[object Object]

TCP Segments ,[object Object],[object Object],[object Object],[object Object]

TCP Segment Format 1 byte 1 byte 1 byte 1 byte Destination Port Options (if any) Data Source Port Sequence Number Request Number offset Reser. Control Window Checksum Urgent Pointer

Addressing in TCP/IP ,[object Object],[object Object],[object Object],[object Object],NOTE: TCP/IP is a protocol suite that includes IP, TCP and UDP.

TCP vs. UDP ,[object Object],[object Object],[object Object],[object Object]

TCP/IP Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hmmmmm. TCP or UDP ? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TCPIP

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TCPIP