Understanding EIGRP
EIGRP, or Enhanced Interior Gateway Routing Protocol, is indeed a routing protocol developed by Cisco. It is classified as an advanced distance vector protocol, which incorporates features of link-state protocols.
Key Features of EIGRP:
- Hybrid Protocol: EIGRP combines the best attributes of distance vector and link-state protocols, enabling faster convergence and more efficient routing calculations.
- DUAL Algorithm: EIGRP uses the Diffusing Update Algorithm (DUAL) for route computation and selection, ensuring loop-free and reliable routing.
- Metric Calculation: EIGRP calculates route metrics based on bandwidth, delay, load, and reliability, allowing for more accurate route selection compared to traditional distance vector protocols.
- Support for VLSM: EIGRP supports Variable Length Subnet Masking (VLSM), which enables efficient IP address utilization by allowing different subnet sizes within the same network.
- Scalability: EIGRP is scalable and can handle larger networks efficiently, making it suitable for enterprise environments.
Conclusion
In summary, the correct answer to the question is option 'A' because EIGRP is a proprietary routing protocol created by Cisco, designed to facilitate efficient and reliable routing within both small and large networks. Its advanced features and robust design make it a preferred choice for many organizations.