开放式最短路径优先（Open Shortest Path First，OSPF）是广泛使用的一种动态路由协议，它属于链路状态路由协议，具有路由变化收敛速度快、无路由环路、支持变长子网掩码（VLSM）和汇总、层次区域划分等优点。

本文主要讲三层交换机配置OSPF动态路由

1、环境介绍

1.1 网络拓扑图

1.2 设备IP信息

区域	设备	VLAN	IP	网关
A区	R1交换机	5	192.168.1.1/24	-
A区	PC_1	10	192.168.10.10/23	192.168.10.1
A区	PC_2	20	192.168.20.20/24	192.168.20.1
B区	R2交换机	5	192.168.1.2/24	-
B区	PC_3	30	192.168.30.30/23	192.168.30.1
B区	PC_4	40	192.168.40.40/224	192.168.40.1

2、交换机配置

2.1 R1交换机vlan配置以及端口划分

<H3C>sys
[H3C]hotname R1
[R1]vlan 5
[R1-vlan5]quit
[R1]int vlan 5
[R1-Vlan-interface5]ip address 192.168.1.1 255.255.255.0
[R1-Vlan-interface5]quit
[R1]vlan 10
[R1-vlan10]quit
[R1]int vlan 10
[R1-Vlan-interface10]ip address 192.168.10.1 255.255.254.0
[R1-Vlan-interface10]quit
[R1]vlan 20
[R1-vlan20]quit
[R1]int vlan 20
[R1-Vlan-interface20]ip address 192.168.20.1 255.255.255.0
[R1-Vlan-interface20]quit
[R1]int f1/0/53
[R1-FortyGigE1/0/53]port link-type access
[R1-FortyGigE1/0/53]port access vlan 5
[R1-FortyGigE1/0/53]quit
[R1]int range g1/0/1 to g1/0/8
[R1-if-range]port link-type access
[R1-if-range]port access vlan 10
[R1]int range g1/0/9 to g1/0/16
[R1-if-range]port link-type access
[R1-if-range]port access vlan 20

2.2 R2交换机vlan配置

<H3C>sys
[H3C]hotname R2
[R2]vlan 5
[R2-vlan5]quit
[R2]int vlan 5
[R2-Vlan-interface5]ip address 192.168.1.2 255.255.255.0
[R2-Vlan-interface5]quit
[R2]vlan 30
[R2-vlan10]quit
[R2]int vlan 30
[R2-Vlan-interface30]ip address 192.168.30.1 255.255.254.0
[R2-Vlan-interface30]quit
[R2]vlan 40
[R2-vlan40]quit
[R2]int vlan 40
[R2-Vlan-interface40]ip address 192.168.40.1 255.255.255.0
[R2-Vlan-interface40]quit
[R2]int f1/0/53
[R2-FortyGigE1/0/53]port link-type access
[R2-FortyGigE1/0/53]port access vlan 5
[R2-FortyGigE1/0/53]quit
[R2]int range g1/0/1 to g1/0/24
[R2-if-range]port link-type access
[R2-if-range]port access vlan 30
[R2]int range g1/0/25 to g1/0/48
[R2-if-range]port link-type access
[R2-if-range]port access vlan 40

2.3 R1交换机OSPF设置

[R1]ospf
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.1]network 192.168.10.0 0.0.1.255
[R1-ospf-1-area-0.0.0.1]network 192.168.20.0 0.0.0.255
[R1-ospf-1-area-0.0.0.1]quit
[R1-ospf-1]quit

2.4 R2交换机OSPF设置

[R2]ospf
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.1]network 192.168.30.0 0.0.1.255
[R2-ospf-1-area-0.0.0.1]network 192.168.40.0 0.0.0.255
[R2-ospf-1-area-0.0.0.1]quit
[R2-ospf-1]quit

3、交换机状态

3.1 R1 ospf状态和路由表

3.2 R2 ospf状态和路由表