OSPF Demo1 认证、BR优先级、RID、缺省路由宣告

拓扑图

计算开销值

经过计算，R1到4.4.4.4的Cost值为49
R4 S2/0/0的开销 = 100 / 2.048 ≈ 48
R1 G0/0/0的开销 = 1

验证：display ip routing-table protocol ospf

各个路由器配置命令

sys
sysname R1

int g0/0/0
ip add 192.168.0.1 24

ospf dr-pri 200
ospf 1 router-id 1.1.1.1
area 0
network 192.168.0.0 0.0.0.255

int g0/0/0
ospf authentication-mode md5 1 cipher huawei

sys
sysn R2

int g0/0/0
ip add 192.168.0.2 24

ospf dr-pri 100
ospf 1 router-id 2.2.2.2
area 0
network 192.168.0.0 0.0.0.255

int g0/0/0
ospf authentication-mode md5 1 cipher huawei

sys
sysn R3

int g0/0/0
ip add 192.168.0.3 24
int s2/0/0
ip add 34.0.0.3 8

ospf 1 router-id 3.3.3.3
area 0
network 192.168.0.0 0.0.0.255
network 34.0.0.0 0.255.255.255

int g0/0/0
ospf authentication-mode md5 1 cipher huawei

sys
sysname R4

ip route-static 0.0.0.0 0 48.0.0.8

int s2/0/0
ip add 34.0.0.4 8
int g0/0/0
ip add 48.0.0.4 8
int lo 1
ip add 4.4.4.4 32

ospf 1 router-id 4.4.4.4
default-route-advertise
area 0
network 34.0.0.0 0.255.255.255
network 4.4.4.4 0.0.0.0

sys
sysn R6
int g0/0/0
ip add 192.168.0.6 24

ospf 1 router-id 6.6.6.6
area 0
network 192.168.0.0 0.0.0.255

int g0/0/0
ospf authentication-mode md5 1 cipher huawei

sys
sysn R8

int g0/0/0
ip add 48.0.0.8 8

ip route-s 0.0.0.0 0 48.0.0.4

int lo 1
ip add 8.8.8.8 32