Detailed explanation of RIP version and the difference with OSPF protocol
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1. RIP protocol version difference
| RIPV1 | RIPV2 |
|---|---|
| Classful routing protocol (advertised without netmask, will be automatically summarized) | Classless routing protocol (netmask is carried when announcing, and the summarization function is automatically turned off when summarizing) |
| Does not support VLSM (Variable Length Subnet Mask) | Support VLSM |
| Authentication function is not supported | Support authentication function |
| Broadcast Updates (255.255.255.255) | Multicast update (224.0.0.9) |
| Automatic aggregation cannot be turned off | It can be automatically aggregated or manually aggregated (only one of the two aggregates can be enabled) |
| No authentication function | With authentication function (MD5 and plaintext) |
| Unable to mark route | Routing can be marked (flexible control of routing according to tag in routing policy) |
2. The difference between RIP and OSPF
| RIP | OSPF | |
|---|---|---|
| name | Based on distance vector | Based on link state |
| layer | transport layer | Network layer |
| protocol and port number | UDP 520 | IP 89 |
| working core | Number of lines (0-16/unlimited) | Computing Metrics for Links |
| priority | 100 | Internal: 10' External: 150 |
| to whom | Adjacent routers send | Send to all OSPF routers in the autonomous system |
| send what | The exchange information is all the information currently known by this router, that is, its current routing table | Link status of all routers adjacent to this router |
| when to post | Fixed time interval (30s) | Flooding occurs only when the link state changes |
| scope of application | Suitable for small and medium networks, relatively simple | Suitable for larger networks |
| Usage | Takes more time to reach equilibrium on the network than OSPF | The actual link bandwidth and CPU time occupied are less than RIP, and the memory is larger than RIP |
| subnet mask | v1 does not support subnetting, v2 version supports subnetting | Include subnet mask in routing packet, support variable length subnetting and classless addressing CIDR |
----------------- This article is a technical question asked in the original factory interview. I hope it can be helpful to write this article. If there are other deficiencies, you can comment and supplement ------------------------