RIP V/s OSPF | Differences between RIP and OSPF
A routing protocol dynamically discovers network paths, adds them to the routing table, and monitors the network topology. If any change occurs, it automatically updates the affected paths in the routing table. RIP and OSPF are routing protocols. This tutorial compares both and describes their differences with key features and functions.
RIP
RIP is a classical routing protocol. It uses a simple metric to calculate the shortest path to every destination. It uses the number of routers as the metric. A router in the network path is called a hop. If more than one route to a destination is available, it selects the route having the lowest hop count. It has several limitations. It does not support VLSM, authentication, and multicast routing updates. It is available in two variations: RIPv1 and RIPv2.
RIPv2 was developed to overcome the limitations of RIPv1. RIP2 addresses the issues of VLSM, authentication, and multicast routing updates. It was an improvement over RIPv1, but it still failed to address the limitations of hop count and slow convergence necessary for large networks.
OSPF
OSPF was developed to overcome the limitations of RIP. It uses a complex algorithm to select the fastest path to every destination. It supports VLSM, authentication, and multicast routing updates. Unlike RIP, it does not periodically broadcast the entire routing table.
It is available in three variations: OSPFv1, OSPFv2, and OSPFv3. OSPFv1 was the original variation. It was developed to support the networks of that time. OSPFv2 was designed as a replacement for OSPFv1. OSPFv1 is no longer used. Since OSPFv1 is no longer used and OSPFv2 was developed as the replacement for OSPFv1, OSPFv2 is commonly called OSPF. The original implementation of OSPF does not support IPv6. Instead of adding support for IPv6 in OSPF, a separate variation known as OSPFv3 was developed for IPv6.
Differences between RIP and OSPF
The following table compares RIP with OSPF and lists their differences.
| RIP stands for Routing Information Protocol. | OSPF stands for Open Shortest Path First. |
| RIP uses the Bellman-Ford algorithm. | OSPF uses the Dijkstra algorithm. |
| RIP uses the hop counts as the metric. It has a limit of 15 hops. If your network has more than 15 hops, you cannot use RIP. | OSPF has no limitation on the hop count. You can use it on a network of any size. |
| RIP does not support VLSM (Variable Length Subnet Masks). | OSPF supports VLSM (Variable Length Subnet Masks). |
| RIP periodically broadcasts the complete routing table. It consumes a large amount of bandwidth. | OSPF broadcasts the entire routing table only when it starts. If a change in the routing table occurs, it broadcasts only the change. |
| RIP is a Distance Vector protocol. It uses the distance (hop count) to determine the transmission path. | OSPF is a link-state protocol. It uses a complex algorithm to determine the transmission path. |
| It is suitable only for small networks. | It is ideal for all sizes of networks. |
| The AD (Administrative Distance) value of RIP is 120. | The AD (Administrative Distance) value of OSPF is 110. |
| It uses a basic algorithm to calculate the best and shortest path for every destination. It consumes less RAM and CPU than OSPF. | It uses a complex algorithm to calculate the best and shortest path for every destination. It consumes more RAM and CPU than RIP. |
| Since it broadcasts the entire routing table, it consumes more bandwidth than OSPF. | Since it broadcasts only the updates, it consumes less bandwidth than RIP. |
| It uses a single multicast address 224.0.0.9. | It uses two multicast addresses: 224.0.0.5 and 224.0.0.6. |
Differences between RIPv1, RIPv2, and OSPFv2
The following table compares RIPv1, RIPv2, and OSPFv2 based on various features and lists their differences.
| Feature | OSPFv2 | RIPv1 | RIPv2 |
| Protocol type | Link state | Distance vector | Distance vector |
| Algorithm | Dijkstra | Bellman-Ford | Bellman-Ford |
| Metric | Bandwidth | Hops | Hops |
| Hop count limit | None | 15 | 15 |
| VLSM support | Yes | No | Yes |
| Classless support | Yes | No | Yes |
| Non-contiguous network support | Yes | No | Yes |
| Auto-summarization | No | Yes | Yes |
| Manual summarization | Yes | No | Yes |
| Route propagation | Multicast | Broadcast | Broadcast |
| Convergence | Fast | Slow | Slow |
| Use authentication | Yes | No | Yes |
| Update On event | Periodic | Periodic | |
| Supported network type | All types | Flat only | Flat only |
This tutorial is part of the tutorial "OSPF Configuration and Concepts Explained.". Other parts of this tutorial are as follows:
Chapter 01 OSPF (Open Shortest Path First) Protocol
Chapter 02 RIP V/s OSPF | Differences between RIP and OSPF
Chapter 03 IGP, EGP, and Autonomous System Explained
Chapter 04 OSPF Features, Advantages, Disadvantages
Chapter 05 OSPF Fundamental Terminology Explained
Chapter 06 OSPF LSA Types and LSA Flooding Explained
Chapter 07 OSPF Area Types and Concept Explained
Chapter 08 OSPF Hello Protocol and Packets Explained
Chapter 09 OSPF RID (Router ID) Explained
Chapter 10 OSPF Neighborship Condition and Requirement
Chapter 11 OSPF DR BDR Selection Process Explained
Chapter 12 How OSPF Routers Build Adjacency Explained
Chapter 13 Shortest Path First (SPF) Algorithm Explained
Chapter 14 OSPF Single-Area Configuration Explained
Chapter 15 OSPF Stub area, Totally Stub area, NSSA, and Totally NSSA
Chapter 16 OSPF Virtual Links Explained
Chapter 17 OSPF Authentication Password and MD5 Explained
Chapter 18 OSPF Multi-Area Configuration Explained
Conclusion
OSPF was developed in the mid-1980s to overcome many of the deficiencies and scalability problems of RIP in large enterprise networks. This tutorial compared OSPF with RIP and described the main differences between them.
By ComputerNetworkingNotes Updated on 2026-04-26