When you want to succeed as bad as you want to breathe, then you’ll be successful.
--Your friends at LectureNotes

Note for Computer Network - CN By Abhishek Badholia

  • Computer Network - CN
  • Note
  • 1 Topics
  • Uploaded 2 years ago
0 User(s)
Download PDFOrder Printed Copy

Share it with your friends

Leave your Comments

Text from page-1

Internet Control Protocols Reading: Section 4.1 COS 461: Computer Networks Jennifer Rexford 1

Text from page-2

Goals of Today’s Lecture • Bootstrapping an end host – Learning its own configuration parameters (DHCP) – Learning the link-layer addresses of other nodes (ARP) • IP routers – Line cards, switching fabric, and route processor – Error reporting and monitoring (with ICMP) 2

Text from page-3

Thus Far in the Class… host host HTTP message HTTP TCP segment TCP router IP Ethernet interface HTTP IP packet Ethernet interface IP TCP router IP packet SONET interface SONET interface IP IP packet Ethernet interface IP Ethernet interface 3

Text from page-4

Thus Far in the Class… • Application protocols – Socket abstraction – HyperText Transfer Protocol, File Transfer Protocol (FTP) • Transport services built on IP – TCP: reliable byte stream with congestion control – UDP: unreliable message delivery • Name/address translation – DNS: mapping host names to/from IP addresses • Internet Protocol (IP) – Best-effort packet delivery service – IP addresses and IP prefixes – Packet forwarding based on longest-prefix match 4

Lecture Notes