1.拓扑
2.各路由器配置
sysname R1ospf 1area 0.0.0.0network 10.0.12.0 0.0.0.255network 10.0.13.0 0.0.0.255interface LoopBack0ip address 1.1.1.1 255.255.255.255ospf 1 area 0.0.0.0interface GigabitEthernet0/0ip address 10.0.12.1 255.255.255.0interface GigabitEthernet0/1ip address 10.0.13.1 255.255.255.0ip route-static 2.2.2.2 32 10.0.13.3 preference 9
sysname R2ospf 1area 0.0.0.0network 10.0.12.2 0.0.0.0network 10.0.24.2 0.0.0.0interface LoopBack0ip address 2.2.2.2 255.255.255.255ospf 1 area 0.0.0.0interface GigabitEthernet0/0ip address 10.0.12.2 255.255.255.0interface GigabitEthernet0/1ip address 10.0.24.2 255.255.255.0
sysname R3ospf 1area 0.0.0.0network 10.0.13.3 0.0.0.0network 172.17.21.0 0.0.0.255interface GigabitEthernet0/0ip address 10.0.13.3 255.255.255.0interface GigabitEthernet0/1ip address 172.17.21.5 255.255.255.0ip route-static 2.2.2.2 32 172.17.21.28 preference 9sysname R4ospf 1area 0.0.0.0network 10.0.24.4 0.0.0.0network 172.17.20.4 0.0.0.0interface GigabitEthernet0/0ip address 172.17.20.4 255.255.255.0interface GigabitEthernet0/1ip address 10.0.24.4 255.255.255.0
3.服务器配置与测试
#服务器物理网卡
[root@yt-hz-kvm01 ~]# brctl show br0
bridge name bridge id STP enabled interfaces
br0 8000.0025909be920 yes eth2#添加2个IP网段
ip add a 172.17.20.28/26 dev br0
ip add a 172.17.21.28/24 dev br0#添加ospf配置文件
[root@yt-hz-kvm01 ~]# cat /etc/quagga/ospfd.conf
router ospfospf router-id 172.17.21.28network 172.17.20.0/24 area 0.0.0.0network 172.17.21.0/24 area 0.0.0.0#启动ospf进程
systemctl restart ospfd
#查看ospf邻居与路由
查看ospf邻居
查看ospf路由
查看路由
#添加延时100ms
[root@yt-hz-kvm01 ~]# tc qdisc add dev eth2 root netem delay 100ms#R1和r3上面增加2.2.2.2的静态路由，优先级要比ospf学到的高
#R1
ip route-static 2.2.2.2 32 10.0.13.3 preference 9#R3
ip route-static 2.2.2.2 32 172.17.21.28 preference 9
#测试（在r2路由器上面指定环回口测试,此时由于来回路径不一致，回去的流量是经过了服务器端口）
#删除延时100ms
tc qdisc del dev eth2 root netem delay 100ms
