OSPF网络类型.doc

1配置一个基本的帧中继环境：中间的帧中继已经配置好了R1(config)#interface s0/0R1(config-if)#no shutdown R1(config-if)#encapsulation frame-relay R1(config-if)#ip address R1(config-if)#no frame-relay inverse-arp R1(config-if)#no arp frame-relay R1(config-if)#frame-relay map ip 102 broadcast R1(config-if)#frame-relay map ip 103 broadcastR1(config-if)#exitR2#sh run int s0/0Building configuration.Current configuration : 223 bytes!interface Serial0/0 ip address encapsulation frame-relay no arp frame-relay frame-relay map ip 203 broadcast frame-relay map ip 201 broadcast no frame-relay inverse-arpendR3#sh run int s0/0Building configuration.Current configuration : 223 bytes!interface Serial0/0 ip address encapsulation frame-relay no arp frame-relay frame-relay map ip 302 broadcast frame-relay map ip 301 broadcast no frame-relay inverse-arpen2帧中继子接口：R1(config)#interface s0/0R1(config-if)#no shutdown R1(config-if)#encapsulation frame-relay R1(config-if)#exitR1(config)#interface s0/0.1 point-to-point R1(config-subif)#R1(config-subif)#ip address R1(config-subif)#frame-relay interface-dlci 102R1(config-fr-dlci)#exitR1(config)#interface s0/0.2 point-to-point R1(config-subif)#ip add R1(config-subif)#frame-relay interface-dlci 103R1(config-fr-dlci)#exitR1#sh ip int brief Interface IP-Address OK? Method Status ProtocolFastEthernet0/0 unassigned YES unset administratively down down Serial0/0 unassigned YES TFTP up up Serial0/0.1 YES manual up up Serial0/0.2 YES manual up up FastEthernet0/1 unassigned YES unset administratively down down Serial0/1 unassigned YES unset administratively down down R3#sh run int s0/0Building configuration.Current configuration : 180 bytes!interface Serial0/0 ip address encapsulation frame-relay no arp frame-relay frame-relay map ip 301 broadcast no frame-relay inverse-arpend3帧中继的多点子接口：R1(config)#interface s0/0R1(config-if)#encapsulation frame-relay R1(config-if)#no shutdown R1(config-if)#exitR1(config)#interface s0/0.1 multipoint R1(config-subif)#R1(config-subif)#ip address R1(config-subif)#frame-relay map ip 102 broadcast R1(config-subif)#frame-relay map ip 103 broadcast R1(config-subif)#R1(config-subif)#exitR3#sh run int Building configuration.Current configuration : 223 bytes!interface Serial0/0 ip address encapsulation frame-relay no arp frame-relay frame-relay map ip 302 broadcast frame-relay map ip 301 broadcast noOSPF的NBMA：4非广播网络方式可以当成一个广播网来看，不具备自动发现邻居的能力，需要手动指定邻居该类网络需要DR。可以手动指定DR，修改其他设备接口的优先级为0适用于全互联网络R1：interface Loopback0 ip address !interface Serial0/0 ip address encapsulation frame-relay no arp frame-relay frame-relay map ip 103 broadcast frame-relay map ip 102 broadcast no frame-relay inverse-arp!R1(config)#router ospf 1R1(config-router)#network 55 aR1(config-router)#network 55 area 0R1(config-router)#network 55 area 0 R1(config-router)#neighbor priority 0R1(config-router)#neighbor priority 0R1(config-router)#exitR1#show ip ospf interface s0/0Serial0/0 is up, line protocol is up Internet Address /24, Area 0 Process ID 1, Router ID , Network Type NON_BROADCAST, Cost: 64 Transmit Delay is 1 sec, State WAITING, Priority 1 No designated router on this network No backup designated router on this network Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 oob-resync timeout 120 Hello due in 00:00:17 Wait time before Designated router selection 00:01:17 Supports Link-local Signaling (LLS) Cisco NSF helper support enabled IETF NSF helper support enabled Index 1/1, flood queue length 0 Next 0x0(0)/0x0(0) Last flood scan length is 0, maximum is 0 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 0, Adjacent neighbor count is 0 Suppress hello for 0 neighbor(s)R2：interface Loopback0 ip address interface Serial0/0 ip address encapsulation frame-relay ip ospf priority 0 no arp frame-relay frame-relay map ip 203 broadcast frame-relay map ip 201 broadcast no frame-relay inverse-arprouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R3：interface Loopback0 ip address interface Serial0/0 ip address encapsulation frame-relay ip ospf priority 0 no arp frame-relay frame-relay map ip 302 broadcast frame-relay map ip 301 broadcast no frame-relay inverse-arprouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 0 FULL/DROTHER 00:01:51 Serial0/0 0 FULL/DROTHER 00:01:33 Serial0/0R1#sh ip route ospf /32 is subnetted, 1 subnetsO 110/65 via , 00:02:15, Serial0/0 /32 is subnetted, 1 subnetsO 110/65 via , 00:01:33, Serial0/05 NBMA环境下点到点子接口：不需要DR的选举，可以自动发现邻居，不需要手工指定邻居。需要注意，对端设备如果使用物理接口，需要增加配置ip ospf network point-to-pointR1：interface Loopback0 ip address interface Serial0/0 no ip address encapsulation frame-relay!interface Serial0/0.1 point-to-point ip address frame-relay interface-dlci 102 !interface Serial0/0.2 point-to-point ip address frame-relay interface-dlci 103 router ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0 network 55 area 0R1#show ip ospf interface s0/0.1Serial0/0.1 is up, line protocol is up Internet Address /24, Area 0 Process ID 1, Router ID , Network Type POINT_TO_POINT, Cost: 64 Transmit Delay is 1 sec, State POINT_TO_POINT Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 oob-resync timeout 40 Hello due in 00:00:06 Supports Link-local Signaling (LLS) Cisco NSF helper support enabled IETF NSF helper support enabled Index 1/1, flood queue length 0 Next 0x0(0)/0x0(0) Last flood scan length is 0, maximum is 0 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 0, Adjacent neighbor count is 0 Suppress hello for 0 neighbor(s)R2：interface Loopback0 ip address interface Serial0/0 ip address encapsulation frame-relay ip ospf priority 0 no arp frame-relay frame-relay map ip 203 broadcast frame-relay map ip 201 broadcast no frame-relay inverse-arpip ospf network point-to-pointrouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R3:interface Loopback0 ip address interface Serial0/0 ip address encapsulation frame-relay ip ospf network point-to-point ip ospf priority 0 no arp frame-relay frame-relay map ip 301 broadcast no frame-relay inverse-arp!router ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 0 FULL/ - 00:00:36 Serial0/.2 0 FULL/ - 00:00:39 Serial0/0.1R1#sh ip route ospf /32 is subnetted, 1 subnetsO 110/65 via , 00:02:35, Serial0/0.1 /32 is subnetted, 1 subnetsO 110/65 via , 00:01:58, Serial0/0.26 NBMA环境下多点子接口：星型网络，非全互联需要DR，需要手工指定邻居。R1：interface Loopback0 ip address endinterface Serial0/0 no ip address encapsulation frame-relayinterface Serial0/0.1 multipoint ip address frame-relay map ip 103 broadcast frame-relay map ip 102 broadcastrouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0 neighbor neighbor R1#show ip ospf interface s0/0.1Serial0/0.1 is up, line protocol is up Internet Address /24, Area 0 Process ID 1, Router ID , Network Type NON_BROADCAST, Cost: 64 Transmit Delay is 1 sec, State DR, Priority 1 Designated Router (ID) , Interface address No backup designated router on this network Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5 oob-resync timeout 120 Hello due in 00:00:21 Supports Link-local Signaling (LLS) Cisco NSF helper support enabled IETF NSF helper support enabled Index 1/1, flood queue length 0 Next 0x0(0)/0x0(0) Last flood scan length is 0, maximum is 0 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 0, Adjacent neighbor count is 0 Suppress hello for 0 neighbor(s)R2：interface Serial0/0 ip address encapsulation frame-relay ip ospf network non-broadcast ip ospf priority 0 no arp frame-relay frame-relay map ip 203 broadcast frame-relay map ip 201 broadcast no frame-relay inverse-arpinterface Loopback0 ip address endrouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R2#R3：interface Loopback0 ip address endinterface Serial0/0 ip address encapsulation frame-relay ip ospf priority 0 no arp frame-relay frame-relay map ip 301 broadcast no frame-relay inverse-arpendrouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 0 FULL/DROTHER 00:01:39 Serial0/.3 0 FULL/DROTHER 00:01:31 Serial0/0.17 NBMA环境下点到点：不需要DR，也不需要指定邻居。R1：!interface Loopback0 ip address endinterface Serial0/0 ip address encapsulation frame-relay ip ospf network point-to-point no arp frame-relay frame-relay map ip 103 broadcast frame-relay map ip 102 broadcast no frame-relay inverse-arpendrouter ospf 1 log-adjacency-changes network 55 area 0 network 55 area 0R1# show ip ospf interface s0/0Serial0/0 is up, line protocol is up Internet Address /24, Area 0 Process ID 1, Router ID , Network Type POINT_TO_POINT, Cost: 64 Transmit Delay is 1 sec, State POINT_TO_POINT Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 oob-resync timeout 40 Hello due in 00:00:04 Supports Link-local Signaling (LLS) Cisco NSF helper support enabled IETF NSF helper support enabled Index 1/1, 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 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor Suppress hello for 0 neighbor(s)8 NBMA环境下点到多点：可以当成多个点到点，不需要DR，可以自动发现邻居。非全互联，星型网络需要在各个设备接口下配置：R2(config)#interface s0/0R2(config-if)#ip ospf network point-to-multipointR1#show ip ospf interface s0/0Serial0/0 is up, line protocol is up Internet Address /24, Area 0 Process ID 1, Router ID , 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 00:00:06 Supports Link-local Signaling (LLS) Cisco NSF helper support enabled IETF NSF helper support enabled Index 1/1, 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 2, Adjacent neighbor count is 2 Adjacent with neighbor Adjacent with neighbor Suppress hello for 0 neighbor(s)R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 0 FULL/ - 00:01:57 Serial0/0 0 FULL/ - 00:01:49 Serial0/0R2#sh ip ospf neighbor Neighbor ID Pri State Dead Time A