46 to 1500 bytes TYPE CODE CHECKSUM IDENTIFIER SEQUENCE NUMBER OPTIONAL DATA ICMP Echo message.

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Presentation transcript:

46 to 1500 bytes

16 8 31 TYPE CODE CHECKSUM IDENTIFIER SEQUENCE NUMBER OPTIONAL DATA ICMP Echo message

16 8 31 UDP SOURCE PORT UDP DESTINATION PORT LENGTH CHECKSUM DATA UDP DATAGARAM

Destination Reassembly Required router IP packet fragments Fragments Created router IP packet source

ftp client ftp server 2353 2349 21 20 TCP Segments 131.123.8.111 131.123.250.211 2353 2349 21 20 TCP Segments Proto Local Address Foreign Address TCP 131.123.8.111:2349 131.123.250.211:21 TCP 131.123.8.111:2353 131.123.250.211:20

Send Segments Receive Segments with ACK Sliding Window Protocol time