基于帧中继point-to-multipoint的单区域OSPF的配置
一、场景设置
R4、R3、R2
通过R1
相连，形成
hub and spoke
网络拓扑，
R1
为模拟帧中继交换机，R4为
hub
路由器，
R2、R3
为
spoke
路由器，
R4、R3、R2
采用点对多点接口。所有路由器均使用物理接口连接并启用
OSPF
。
二、具体配置
1、使用R1
模拟帧中继交换机:
Router(config)#hostname FRS
FRS(config)#frame-relay switching
FRS(config)#interface Serial1/0
FRS(config-if)#no ip address
FRS(config-if)#encapsulation frame-relay
FRS(config-if)#clock rate 2016000
FRS(config-if)#frame-relay intf-type dce
FRS(config-if)#frame-relay route 201 interface Serial1/3 102
FRS(config-if)#no shutdown
FRS(config-if)#exit
FRS(config)#interface Serial1/2
FRS(config-if)#no ip address
FRS(config-if)#encapsulation frame-relay
FRS(config-if)#no ip route-cache
FRS(config-if)#clock rate 2016000
FRS(config-if)#frame-relay intf-type dce
FRS(config-if)#frame-relay route 301 interface Serial1/3 103
FRS(config-if)#no shutdown
FRS(config-if)#exit
FRS(config)#interface Serial1/3
FRS(config-if)#no ip address
FRS(config-if)#encapsulation frame-relay
FRS(config-if)#no ip route-cache
FRS(config-if)#clock rate 2016000
FRS(config-if)#frame-relay intf-type dce
FRS(config-if)#frame-relay route 102 interface Serial1/0 201
FRS(config-if)#frame-relay route 103 interface Serial1/2 301
FRS(config-if)#no shutdown
FRS(config-if)#exit
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2、 R4的配置如下：
Routerconfig)#hostname HQ
HQ(config)#interface Loopback1
HQ(config-if)#ip address 10.1.1.1 255.255.255.0
HQ(config-if)#ip ospf network point-to-point
HQ(config-if)#exit
HQ(config)#interface Serial1/3
HQ(config-if)#ip address 10.1.123.1 255.255.255.0
HQ(config-if)#encapsulation frame-relay
HQ(config-if)#ip ospf network point-to-multipoint #the default network type is non-broadcast
HQ(config-if)#frame-relay map ip 10.1.123.1 102 #
使得HQ可以Ping
通自己
HQ(config-if)#frame-relay map ip 10.1.123.2 102 broadcast #
帧中继静态映射
HQ(config-if)#frame-relay map ip 10.1.123.3 103 broadcast
HQ(config-if)#no frame-relay inverse-arp #关闭动态ARP映射
HQ(config-if)#no shutdown
HQ(config-if)#exit
HQ(config)#router ospf 1
HQ(config-router)#log-adjacency-changes
HQ(config-router)#network 10.1.1.0 0.0.0.255 area 0
HQ(config-router)#network 10.1.123.0 0.0.0.255 area 0
HQ(config-router)#exit
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3、R2的配置如下：
Router(config)#hostname EAST
EAST(config)#interface Loopback2
EAST(config-if)#ip address 10.1.2.1 255.255.255.0
EAST(config-if)#ip ospf network point-to-point
EAST(config-if)#exit
EAST(config)#interface Serial1/0
EAST(config-if)#ip address 10.1.123.2 255.255.255.0
EAST(config-if)#encapsulation frame-relay
EAST(config-if)#ip ospf network point-to-multipoint
EAST(config-if)#frame-relay map ip 10.1.123.2 201
EAST(config-if)#frame-relay map ip 10.1.123.1 201 broadcast
EAST(config-if)#frame-relay map ip 10.1.123.3 201 broadcast
EAST(config-if)#no frame-relay inverse-arp
EAST(config-if)#no shutdown
EAST(config-if)#exit
EAST(config)#interface Serial1/1
EAST(config-if)#ip address 10.1.23.2 255.255.255.0
EAST(config-if)#ip ospf hello-interval 5 #
更改定时器timer
EAST(config-if)#ip ospf dead-interval 15
EAST(config-if)#no shutdown
EAST(config-if)#exit
EAST(config)#router ospf 1
EAST(config-router)#network 10.1.2.0 0.0.0.255 area 0
EAST(config-router)#network 10.1.23.0 0.0.0.255 area 0
EAST(config-router)#network 10.1.123.0 0.0.0.255 area 0
EAST(config-router)#exit
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4、R3的配置如下：
Router(config)#hostname WEST
WEST(config)#interface Loopback3
WEST(config-if)#ip address 10.1.3.1 255.255.255.0
WEST(config-if)#ip ospf network point-to-point
WEST(config-if)#exit
WEST(config)#interface Serial1/1
WEST(config-if)#ip address 10.1.23.3 255.255.255.0
WEST(config-if)#ip ospf hello-interval 5
WEST(config-if)#ip ospf dead-interval 15
WEST(config-if)#no shutdown
WEST(config-if)#exit
WEST(config)#interface Serial1/2
WEST(config-if)#ip address 10.1.123.3 255.255.255.0
WEST(config-if)#encapsulation frame-relay
WEST(config-if)#ip ospf network point-to-multipoint
WEST(config-if)#frame-relay map ip 10.1.123.3 301
WEST(config-if)#frame-relay map ip 10.1.123.1 301 broadcast
WEST(config-if)#frame-relay map ip 10.1.123.2 301 broadcast
WEST(config-if)#no frame-relay inverse-arp
WEST(config-if)#no shutdown
WEST(config-if)#exit
WEST(config)#router ospf 1
WEST(config-router)#network 10.1.3.0 255.255.255.0 area 0
WEST(config-router)#network 10.1.23.0 255.255.255.0 area 0
WEST(config-router)#network 10.1.123.0 255.255.255.0 area 0
WEST(config-router)#exit
三、验证配置：
EAST: