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基于帧中继point-to-multipoint的单区域OSPF的配置

2009-10-11 20:18 826 查看
一、场景设置




R4、R3、R2[/b]通过R1[/b]相连,形成[/b]hub and spoke[/b]网络拓扑,[/b]R1[/b]为模拟帧中继交换机,R4为[/b]hub[/b]路由器,[/b]R2、R3 [/b]为[/b]spoke[/b]路由器,[/b]R4、R3、R2[/b]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[/b]OSPF[/b]。[/b]
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二、具体配置

1、使用R1[/b]模拟帧中继交换机:[/b]
Router(config)#hostname FRS[/b]
FRS(config)#frame-relay switching[/b]
FRS(config)#interface Serial1/0[/b]
FRS(config-if)#no ip address[/b]
FRS(config-if)#encapsulation frame-relay[/b]
FRS(config-if)#clock rate 2016000[/b]
FRS(config-if)#frame-relay intf-type dce[/b]
FRS(config-if)#frame-relay route 201 interface Serial1/3 102[/b]
FRS(config-if)#no shutdown[/b]
FRS(config-if)#exit[/b]
FRS(config)#interface Serial1/2[/b]
FRS(config-if)#no ip address[/b]
FRS(config-if)#encapsulation frame-relay[/b]
FRS(config-if)#no ip route-cache[/b]
FRS(config-if)#clock rate 2016000[/b]
FRS(config-if)#frame-relay intf-type dce[/b]
FRS(config-if)#frame-relay route 301 interface Serial1/3 103[/b]
FRS(config-if)#no shutdown[/b]
FRS(config-if)#exit[/b]
FRS(config)#interface Serial1/3[/b]
FRS(config-if)#no ip address[/b]
FRS(config-if)#encapsulation frame-relay[/b]
FRS(config-if)#no ip route-cache[/b]
FRS(config-if)#clock rate 2016000[/b]
FRS(config-if)#frame-relay intf-type dce[/b]
FRS(config-if)#frame-relay route 102 interface Serial1/0 201[/b]
FRS(config-if)#frame-relay route 103 interface Serial1/2 301[/b]
FRS(config-if)#no shutdown[/b]
FRS(config-if)#exit[/b]
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2、R4的配置如下:[/b]
Routerconfig)#hostname HQ[/b]
HQ(config)#interface Loopback1[/b]
HQ(config-if)#ip address 10.1.1.1 255.255.255.0[/b]
HQ(config-if)#ip ospf network point-to-point[/b]
HQ(config-if)#exit[/b]
HQ(config)#interface Serial1/3[/b]
HQ(config-if)#ip address 10.1.123.1 255.255.255.0[/b]
HQ(config-if)#encapsulation frame-relay[/b]
HQ(config-if)#ip ospf network point-to-multipoint #the default network type is non-broadcast[/b]
HQ(config-if)#frame-relay map ip 10.1.123.1 102 #[/b]使得HQ可以Ping[/b]通自己[/b]
HQ(config-if)#frame-relay map ip 10.1.123.2 102 broadcast #[/b]帧中继静态映射[/b]
HQ(config-if)#frame-relay map ip 10.1.123.3 103 broadcast [/b]
[/b]HQ(config-if)#no frame-relay inverse-arp #关闭动态ARP[/b]映射[/b][/b]
HQ(config-if)#no shutdown[/b]
HQ(config-if)#exit[/b]
HQ(config)#router ospf 1[/b]
HQ(config-router)#log-adjacency-changes[/b]
HQ(config-router)#network 10.1.1.0 0.0.0.255 area 0[/b]
HQ(config-router)#network 10.1.123.0 0.0.0.255 area 0[/b]
HQ(config-router)#exit[/b]

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3、R2的配置如下:
Router(config)#hostname EAST[/b]
EAST(config)#interface Loopback2[/b]
EAST(config-if)#ip address 10.1.2.1 255.255.255.0[/b]
EAST(config-if)#ip ospf network point-to-point[/b]
EAST(config-if)#exit[/b]
EAST(config)#interface Serial1/0[/b]
EAST(config-if)#ip address 10.1.123.2 255.255.255.0[/b]
EAST(config-if)#encapsulation frame-relay[/b]
EAST(config-if)#ip ospf network point-to-multipoint[/b]
EAST(config-if)#frame-relay map ip 10.1.123.2 201[/b]
EAST(config-if)#frame-relay map ip 10.1.123.1 201 broadcast[/b]
EAST(config-if)#frame-relay map ip 10.1.123.3 201 broadcast[/b]
EAST(config-if)#no frame-relay inverse-arp[/b]
EAST(config-if)#no shutdown[/b]
EAST(config-if)#exit[/b]
EAST(config)#interface Serial1/1[/b]
EAST(config-if)#ip address 10.1.23.2 255.255.255.0[/b]
EAST(config-if)#ip ospf hello-interval 5 #[/b]更改定时器timer[/b]
EAST(config-if)#ip ospf dead-interval 15[/b]
EAST(config-if)#no shutdown[/b]
EAST(config-if)#exit[/b]
EAST(config)#router ospf 1[/b]
EAST(config-router)#network 10.1.2.0 0.0.0.255 area 0[/b]
EAST(config-router)#network 10.1.23.0 0.0.0.255 area 0[/b]
EAST(config-router)#network 10.1.123.0 0.0.0.255 area 0[/b]
EAST(config-router)#exit[/b]
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4、R3的配置如下:[/b]
Router(config)#hostname WEST[/b]
WEST(config)#interface Loopback3[/b]
WEST(config-if)#ip address 10.1.3.1 255.255.255.0[/b]
WEST(config-if)#ip ospf network point-to-point[/b]
WEST(config-if)#exit[/b]
WEST(config)#interface Serial1/1[/b]
WEST(config-if)#ip address 10.1.23.3 255.255.255.0[/b]
WEST(config-if)#ip ospf hello-interval 5[/b]
WEST(config-if)#ip ospf dead-interval 15[/b]
WEST(config-if)#no shutdown[/b]
WEST(config-if)#exit[/b]
WEST(config)#interface Serial1/2[/b]
WEST(config-if)#ip address 10.1.123.3 255.255.255.0[/b]
WEST(config-if)#encapsulation frame-relay[/b]
WEST(config-if)#ip ospf network point-to-multipoint[/b]
WEST(config-if)#frame-relay map ip 10.1.123.3 301[/b]
WEST(config-if)#frame-relay map ip 10.1.123.1 301 broadcast[/b]
WEST(config-if)#frame-relay map ip 10.1.123.2 301 broadcast[/b]
WEST(config-if)#no frame-relay inverse-arp[/b]
WEST(config-if)#no shutdown[/b]
WEST(config-if)#exit[/b]
WEST(config)#router ospf 1[/b]
WEST(config-router)#network 10.1.3.0 255.255.255.0 area 0[/b]
WEST(config-router)#network 10.1.23.0 255.255.255.0 area 0[/b]
WEST(config-router)#network 10.1.123.0 255.255.255.0 area 0[/b]
WEST(config-router)#exit[/b]

三、验证配置:

EAST:

EAST#show ip ospf interface Serial1/0

Serial1/0 is up, line protocol is up

Internet Address 10.1.123.2/24, Area 0

Process ID 1, Router ID 10.1.2.1, Network Type POINT_TO_MULTIPOINT, Cost: 64

Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT

Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

oob-resync timeout 120

Hello due in 00:00:10

Supports Link-local Signaling (LLS)

Cisco NSF helper support enabled

IETF NSF helper support enabled

Index 3/3, flood queue length 0

Next 0x0(0)/0x0(0)

Last flood scan length is 1, maximum is 1

Last flood scan time is 0 msec, maximum is 4 msec

Neighbor Count is 1, Adjacent neighbor count is 1

Adjacent with neighbor 10.1.1.1

Suppress hello for 0 neighbor(s)

EAST#show ip ospf neighbor[/b][/b] #无DR、BDR的选举!

Neighbor ID Pri State Dead Time Address Interface

10.1.1.1 0 FULL/ - 00:01:54 10.1.123.1 Serial1/0

10.1.3.1 0 FULL/ - 00:00:10 10.1.23.3 Serial1/1

EAST#show ip route ospf

10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks

O 10.1.3.0/24 [110/65] via 10.1.23.3, 00:02:30, Serial1/1

O 10.1.1.0/24 [110/65] via 10.1.123.1, 00:02:30, Serial1/0

O 10.1.123.1/32 [110/64] via 10.1.123.1, 00:02:30, Serial1/0

O 10.1.123.3/32 [110/64] via 10.1.23.3, 00:02:30, Serial1/1

WEST:

WEST#show ip ospf interface Serial1/2

Serial1/2 is up, line protocol is up

Internet Address 10.1.123.3/24, Area 0

Process ID 1, Router ID 10.1.3.1, Network Type POINT_TO_MULTIPOINT, Cost: 64

Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT

Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

oob-resync timeout 120

Hello due in 00:00:07

Supports Link-local Signaling (LLS)

Cisco NSF helper support enabled

IETF NSF helper support enabled

Index 3/3, flood queue length 0

Next 0x0(0)/0x0(0)

Last flood scan length is 1, maximum is 1

Last flood scan time is 4 msec, maximum is 4 msec

Neighbor Count is 1, Adjacent neighbor count is 1

Adjacent with neighbor 10.1.1.1

Suppress hello for 0 neighbor(s)

WEST#show ip ospf neighbor #无DR、BDR的选举!

Neighbor ID Pri State Dead Time Address Interface

10.1.1.1 0 FULL/ - 00:01:46 10.1.123.1 Serial1/2

10.1.2.1 0 FULL/ - 00:00:11 10.1.23.2 Serial1/1

WEST#show ip route ospf

10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks

O 10.1.2.0/24 [110/65] via 10.1.23.2, 00:07:16, Serial1/1

O 10.1.1.0/24 [110/65] via 10.1.123.1, 00:07:16, Serial1/2

O 10.1.123.1/32 [110/64] via 10.1.123.1, 00:07:16, Serial1/2

O 10.1.123.2/32 [110/64] via 10.1.23.2, 00:07:16, Serial1/1

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