OSPF和IGRP的区别

1. 开放最短路径优先(OSPF)：
OSPF 使用链路状态路由算法。使用路由器中可用的链路状态信息，它构建拓扑，其中拓扑确定路由决策的路由表。它支持可变长度子网掩码和无类别域间路由寻址模型。由于它使用 Dijkstra 算法，因此它计算每条路线的最短路径树。 OSPF(开放最短路径优先)的主要优点是它自己处理错误检测，并使用多播寻址在广播域中进行路由。

2. 内部网关路由协议(IGRP)：
IGRP 使用距离矢量协议(内部)在系统内交换数据。它支持每个节点的多个指标，包括延迟、负载和带宽，以便比较组合成单个指标的 2 条路由。 IGRP 的端口号是 9，用于通信，默认情况下每 90 秒更新一次路由信息。

OSPF和IGRP的区别：

SR.NO	OSPF	IGRP
1.	OSPF stands For Open Shortest Path First.	IGRP Stands For Interior Gateway Routing protocol.
2.	OSPF works on Dijkstra Algorithm.	IGRP works on Bellman ford Algorithm.
3.	It is a link state protocol.	It is a distance vector protocol.
4.	It is basically use for larger size organization in the network.	It is basically use for medium to larger size organization in the network.
5.	There is no such restriction on the hop count.	It allow maximum hop count upto 255.
6.	It is a more intelligent routing protocol than IGRP.	It is not more intelligent routing protocol.
7.	OSPF routing protocol creates three Table in the router: Neighbor Table, Database Table, Routing Table.	IGRP routing protocol creates three table In the router : Neighbor Table, Topology Table, Routing Table.
8.	It’s dministrative distance is 110.	It’s administrative distance is 100.
9.	It Is a Industry standard routing protocol.	It Is a Cisco standard routing protocol.
10.	It calculates the metric in terms of bandwidth.	It calculates the metric In terms of bandwidth, load and delay.