【翰林技术】配置OSPF 的NSSA 区域

组网需求
如图所示，四台交换机都运行OSPF，且整个OSPF网络被划分为Area0和Area1两个
区域。现要求Area1内的设备不接收其他OSPF区域引入的外部路由信息，而Area1内的交
换机则通过区域内的ASBR设备引入外部路由来与外部网络进行通信。同时，由于
SwitchB承载的业务较多，所以需要指定SwitchA作为转换路由器将Type7 LSA转换为
Type5 LSA发送到其他OSPF区域。

配置文件
l SwitchA的配置文件
#
sysname SwitchA
#
vlan batch 10 30
#
interface Vlanif10
ip address 192.168.1.1 255.255.255.0
#
interface Vlanif30
ip address 192.168.3.1 255.255.255.0
#
interface GigabitEthernet1/0/1
port link-type trunk
port trunk allow-pass vlan 30
#
interface GigabitEthernet1/0/2
port link-type trunk
port trunk allow-pass vlan 10
#
ospf 1 router-id 10.1.1.1
area 0.0.0.0
network 192.168.1.0 0.0.0.255
area 0.0.0.1
network 192.168.3.0 0.0.0.255
nssa translator-always
#
return
l SwitchB的配置文件
#
sysname SwitchB
#
vlan batch 20 40
#
interface Vlanif20
ip address 192.168.2.1 255.255.255.0
#
interface Vlanif40
ip address 192.168.4.2 255.255.255.0
#
interface GigabitEthernet1/0/1
port link-type trunk
port trunk allow-pass vlan 40
#
interface GigabitEthernet1/0/2
port link-type trunk
port trunk allow-pass vlan 20
#
ospf 1 router-id 10.2.2.2
area 0.0.0.0
network 192.168.2.0 0.0.0.255
area 0.0.0.1
network 192.168.4.0 0.0.0.255
nssa
#
return
l SwitchC的配置文件
#
sysname SwitchC
#
vlan batch 10 20
#
interface Vlanif10
ip address 192.168.1.2 255.255.255.0
#
interface Vlanif20
ip address 192.168.2.2 255.255.255.0
#
interface GigabitEthernet1/0/1
port link-type trunk
port trunk allow-pass vlan 10
#
interface GigabitEthernet1/0/2
port link-type trunk
port trunk allow-pass vlan 20
#
ospf 1 router-id 10.3.3.3
area 0.0.0.0
network 192.168.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255
#
return
l SwitchD的配置文件
#
sysname SwitchD
#
vlan batch 30 40
#
interface Vlanif30
ip address 192.168.3.2 255.255.255.0
#
interface Vlanif40
ip address 192.168.4.1 255.255.255.0
#
interface GigabitEthernet1/0/1
port link-type trunk
port trunk allow-pass vlan 30
#
interface GigabitEthernet1/0/2
port link-type trunk
port trunk allow-pass vlan 40
#
ospf 1 router-id 10.4.4.4
import-route static
area 0.0.0.1
network 192.168.3.0 0.0.0.255
network 192.168.4.0 0.0.0.255
nssa
#
ip route-static 172.16.0.0 255.255.0.0 NULL0
#
return
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