Description: EIGRP, or Enhanced Interior Gateway Routing Protocol, is a routing protocol developed by Cisco that is used to facilitate communication between routers in wide area networks (WAN). This protocol combines features of distance vector and link state routing protocols, allowing it to provide efficient and fast routing. EIGRP uses a routing algorithm called DUAL (Diffusing Update Algorithm), which enables routers to calculate the most optimal routes and maintain network stability. One of its most notable features is the ability to perform incremental updates, meaning that only the routes that have changed are sent, thus reducing network traffic and improving efficiency. Additionally, EIGRP is capable of supporting multiple network protocols, making it versatile in heterogeneous environments. Its implementation is common in large enterprise networks, where efficiency and speed in routing are crucial for overall network performance.
History: EIGRP was introduced by Cisco in 1994 as a proprietary protocol. Its development was based on the desire to improve the limitations of existing routing protocols, such as RIP and OSPF. In 2013, Cisco announced that EIGRP would be released as an open standard, allowing its use on devices from other manufacturers, thus expanding its adoption in various networks.
Uses: EIGRP is primarily used in large, complex enterprise networks where efficient and fast routing is required. It is ideal for environments that require high availability and where routes may change frequently. It is also used in networks that combine different network protocols, thanks to its ability to support multiple protocols.
Examples: A practical example of EIGRP can be found in a multinational company that has branches in different countries. By using EIGRP, the company can ensure that all its routers communicate efficiently, optimizing data traffic between various locations. Another example is in a university campus environment, where EIGRP can manage traffic between multiple buildings and departments.
