EIGRP 代表增强型内部网关路由协议。它用于将来自一台路由器的信息共享给位于同一区域的相邻路由器。它也是一个复杂的协议，但可以配置并使其在小型和大型网络中轻松工作。它也是一种混合协议，因为它同时使用了距离矢量路由和链路状态路由协议的特性。
OSPF 代表开放最短路径优先。这可以在各种网络中使用和部署。这是一种无类路由协议，它也有助于可变长度子网掩码 (VLSM) 和不连续网络。
EIGRP 和 OSPF 的区别：
| S.No. | Comparison | EIGRP | OSPF |
|---|---|---|---|
| 1. | Stands for | Enhanced Interior Gateway Protocol. | Open Shortest Path First. |
| 2. | Protocol type | Hybrid. | Link State. |
| 3. | Administrative distance | 90 (Internal) 170 (External). | 110 |
| 4. | Algorithm | DUAL distance vector. | Dijkstra link state. |
| 5. | Standards-based on | Cisco Proprietary. | IETF Open Standard. |
| 6. | Routing metrics | Combination of bandwidth, reliability, load and delay. | Interface bandwidth. |
| 7. | CPU requirements | Lower CPU and memory needs. | Require high CPU and memory. |
| 8. | Ease of implementation | Easy but no provision of auto-summary. | Complicated. |