Routing Information Protocol (RIP)

Duration: 8 min

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Module outline

  1. About Course: UPPSC Course Overview
  2. Interview Preparation & Guidance: Interview Preparation
  3. Paper 1 | General Hindi: भाषा, लिपि, ध्वनि, वर्ण, अक्षर, स्वर, व्यंजन, मात्रा और संयुक्ताक्षर, वर्तनी, वर्ण-विन्यास, अनुस्वार, अनुनासिक, चंद्रबिंदु और ‘र’ के रूप, शब्द, पद और शब्द-भेद, संज्ञा और सर्वनाम, विशेषण और क्रिया, लिंग, वचन, पुरुष और कारक, काल, वाच्य, वाक्य और वाक्य-भेद, वर्णमाला, समास, संधि, विलोम शब्द, पर्यायवाची शब्द, सामान्य अशुद्धियाँ, अनेक शब्दों के लिए एक शब्द, मुहावरे और लोकोक्तियाँ, अपठित गद्यांश और अपठित पद्यांश, Multi-Topic Content (Cross-Concept Material)
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  8. Paper 1 | Computer Organization and Architecture: Basics of COA, Programming the Basic Computer, Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Register Transfer and Microoperations, Control Unit Design
  9. Paper 1 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security
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  13. Paper 1 | Software Project Management: Software Project Management
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  16. Paper 2 | Artificial Intelligence & High Performance Computing: Approaches to AI, Search Algorithms, Game Playing, Knowledge Representation, Planning, Multi Agent Systems, Natural Language Processing, Emerging Tech Trends
  17. Paper 2 | Image Processing: Digital Image Fundamentals, Image Enhancement, Image Restoration, Color Image Processing, Image Compression
  18. Paper 2 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  19. Paper 2 | Computer Graphics: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing
  20. Paper 2 | Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, HTML Basics, JavaScript-Basics, Java
  21. Paper 2 | Soft Computing: Fuzzy Sets, Artificial Neural Networks, Genetic Algorithms
  22. Paper 2 | Distributed System: Distributed Systems
  23. UPPSC Live Class Recordings: UPPSC Polytechnic Lecturer 2025 (CS)
  24. Previous Year Papers:
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AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces the Routing Information Protocol (RIP), a widely used intradomain routing protocol based on distance-vector algorithms. The instructor defines RIP’s metric as hop count, using a network diagram with hosts N1 through N4 and routers R1 through R3 to illustrate 1-hop, 2-hop, and 3-hop paths. The lesson then covers the RIP algorithm, emphasizing that routers send entire forwarding tables rather than only distance vectors. The receiver adds one hop to each cost and updates the next-router field; routes are added if new, or replaced if cheaper. The final section explains RIP’s periodic, expiration, and garbage collection timers, noting that expired routes have hop count set to 16. It concludes with RIP performance characteristics: less traffic, convergence of forwarding tables, and robustness.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The opening slide is titled “Routing Information Protocol (RIP)” and states that RIP is one of the most widely used intradomain routing protocols based on distance-vector routing. A “Metric” section defines hop count as the number of networks a packet travels from source router to final destination host. A diagram shows N1 Source through N4 Destination linked by R1, R2, and R3, with labels “1 hop (N4),” “2 hops (N3, N4),” and “3 hops (N2, N3, N4).” Red underlines highlight key phrases.

  2. 2:00 – 5:00 02:00-05:00

    The “RIP Algorithm” slide explains that, instead of sending only distance vectors, a router sends the whole contents of its forwarding table in update messages. The receiver adds one hop to each cost and changes the next router field to the sending router’s address. Three route-selection cases are listed: add a received route if it does not exist in the old forwarding table; select it if its cost is lower than the old route’s cost. The section transitions to “Timers in RIP,” introducing periodic, expiration, and garbage collection timers.

  3. 5:00 – 8:14 05:00-08:14

    The “Timers in RIP” slide details the periodic timer, which controls advertising of regular update messages, and the expiration timer, which governs route validity. It states that when a route expires, “the hop count of the route is set to 16,” with 16 circled in red. The final “Performance of RIP” slide lists three characteristics: Less Traffic, Convergence of Forwarding Tables, and Robustness.

The lecture progresses from definition to operation. First, RIP is positioned as an intradomain distance-vector protocol whose metric is hop count, illustrated with a simple multi-router topology. Next, the algorithm’s update mechanism is explained: full forwarding-table advertisements, cost increment by one hop, and route replacement rules. Finally, timers operationalize reliability—periodic updates, expiration at hop count 16, and garbage collection—while performance points summarize RIP’s practical advantages. The central ideas are hop-count metric, full-table updates, and timer-based route aging; minor details include specific slide annotations.

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