OSPF网络类型及NBMA五种类型配置

配置一个基本的帧中继环境：中间的帧中继已经配置好了

Rl(config)#interfaces0/3

Rl(config-if)#noshutdown

Rl(config-if)#encapsulationframe-relay

Rl(config-if)#noframe-relayinverse-arp

Rl(config-if)#noarpframe-relay

Rl(config-if)#frame-relaymapip102broadcast

Rl(config-if)#frame-relaymapip103broadcast

Rl(config-if)#exit

R2#shrunints0/0

Buildingconfiguration...

Currentconfiguration:223bytes

!

interfaceSerial0/3

encapsulationframe-relay

noarpframe-relay

frame-relaymapip203broadcast

frame-relaymapip201broadcast

noframe-relayinverse-arp

end

R3#shrunintsO/3

Buildingconfiguration...

Currentconfiguration:223bytes

interfaceSerial。#

encapsulationframe-relay

noarpframe-relay

frame-relaymapip302broadcast

frame-relaymapip301broadcast

noframe-relayinverse-arp

en

帧中继子接口:

S0/0.1point-to-point

10.0.0.1

DLCI20.0.0.1301

Rl(config)#interfacesO/D

Rl(config-if)#noshutdown

Rl(config-if)#encapsulationframe-relay

Rl(config-if)#exit

Rl(config)#interfaces0/3.1point-to-point

Rl(config-subif)#

Rl(config-subif)#frame-relayinterface-dlci102

Rl(config-fr-dlci)#exit

Rl(config)#interfaces0/0.2point-to-point

Rl(config-subif)#frame-relayinterface-dlci103

Rl(config-fr-dlci)#exit

Rl#shipintbrief

InterfaceIP-AddressOK?MethodStatusProtocol

FastEthernetO/OunassignedYESunsetadministrativelydowndown

SerialO/0unassignedYESTFTPupup

SerialO/O.lYESmanualupup

SerialO/3.2YESmanualupup

FastEthernetO/1unassignedYESunsetadministrativelydowndown

SerialO/1unassignedYESunsetadministrativelydowndown

R3#shrunintsO/3

Buildingconfiguration...

Currentconfiguration:180bytes

!

interfaceSerial。#

encapsulationframe-relay

noarpframe-relay

frame-relaymapip301broadcast

noframe-relayinverse-arp

end

帧中继的多点子接口：

10.0.0.2

DTE

S0/0

1841

R2

201SODLCI10.0.0.1201

_>203s2DLCI10.0.0.3203

,102Si

DTE'103s2

1841S0/0.1multipointCloud-Pi\301SO

RI10.0.0.1FRSW302si

DLCI:.0.3

10.0.0.2102SC/O

10.0.0.3103

1841

R3

DLCI10.0.0.1301

DLCI10.0.0.2302

Rl(config)#interfaces0/0

Rl(config-if)#encapsulationframe-relay

Rl(config-if)#noshutdown

Rl(config-if)#exit

Rl(config)#interfaces0/3.1multipoint

Rl(config-subif)#

Rl(config-subif)#frame-relaymapip102broadcast

Rl(config-subif)#frame-relaymapip103broadcast

Rl(config-subif)#

Rl(config-subif)#exit

R3#shrunint

Buildingconfiguration...

Currentconfiguration:223bytes

!

interfaceSerial0/0

encapsulationframe-relay

noarpframe-relay

frame-relaymapip302broadcast

frame-relaymapip301broadcast

no

OSPF的NBMA：

非广播网络方式

可以当成一个广播网来看，不具备自动发觉邻居的实力，须要手动指定邻居

该类网络须要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：

interfaceLoopbackO

interfaceSerial。人)

encapsulationframe-relay

noarpframe-relay

frame-relaymapip103broadcast

frame-relaymapip102broadcast

noframe-relayinverse-arp

!

Rl(config)#routerospf1

Rl(config-router)#network55a

Rl(config-router)#network55area0

Rl(config-router)#networkl.l.l.O55area0

Rl(config-router)#neighborpriority0

Rl(config-router)#neighborpriority0

Rl(config-router)#exit

Rl#showipospfinterfacesO/J

Serial。/)isup,lineprotocolisup

InternetAddress^4,Area0

ProcessID1,RouterIDLI.1.1,NetworkTypeNON_BROADCAST/Cost:64

TransmitDelayis1sec.StateWAITING,Priority1

Nodesignatedrouteronthisnetwork

Nobackupdesignatedrouteronthisnetwork

Timerintervalsconfigured,Hello30,Dead120,Wait120,Retransmit5

oob-resynctimeout120

Helloduein00:00:17

WaittimebeforeDesignatedrouterselection00:01:17

SupportsLink-localSignaling(LLS)

CiscoNSFhelpersupportenabled

IETFNSFhelpersupportenabled

Index1/1,floodqueuelength0

Next0x0(0)/)x0(0)

Lastfloodscanlengthis0,maximumis0

Lastfloodscantimeis0msec,maximumis0msec

NeighborCountis0,Adjacentneighborcountis0

Suppresshellofor0neighbor(s)

R2：

interfaceLoopbackO

interfaceSerial。/)

encapsulationframe-relay

ipospfpriority0

noarpframe-relay

frame-relaymapip203broadcast

frame-relaymapip201broadcast

noframe-relayinverse-arp

routerospf1

log-adjacency-changes

network55area0

network55area0

R3：

interfaceLoopbackO

interfaceSerial。/)

encapsulationframe-relay

ipospfpriority0

noarpframe-relay

frame-relaymapip302broadcast

frame-relaymapip301broadcast

noframe-relayinverse-arp

routerospf1

log-adjacency-changes

network55area0

network55area0

Rl#showipospfneighbor

NeighborIDPriStateDeadTimeAddressInterface

Z.2.2.20FULL/DROTHER00:01:51Serial。由

33.3.30FULL/DROTHER00:01:33Serial。由

Rl#shiprouteospf

方2issubnetted,1subnets

O[110龙5]via,00:02:15,Serial0/0

^2issubnetted,1subnets

O33.3.3[110^5]via,00:01:33,SerialO/t)

NBMA环境下点到点子接口：

不须要DR的选举，可以自动发觉邻居，不须要手工指定邻居。

须要留意，对端设备假如运用物理接口，须要增力口配置ipospfnetworkpoint-to-point

S0/0.1point-to-point

10.0.0.1201

102

----------102SI

----------------s103s2

1841S0/0.2point-to-point

R120.0.0.1

103

1841

R3

DLCI20.0.0.1301

RI：

interfaceLoopbackO

ipaddress1.1.1.

interfaceSerialOA)

noipaddress

encapsulationframe-relay

!

interfaceSerialO/).!point-to-point

frame-relayinterface-dlci102

!

interfaceSerialOA).2point-to-point

frame-relayinterface-dlci103

routerospf1

log-adjacency-changes

network55area0

network55area0

network55area0

Rl#showipospfinterface$033.1

SerialOX).lisup,lineprotocolisup

InternetAddress/24,Area0

ProcessID1,RouterID,NetworkTypePOINT_TO_POINT,Cost:64

TransmitDelayis1sec,StatePOINT_TO_POINT

Timerintervalsconfigured,Hello10,Dead40,Wait40,Retransmit5

oob-resynctimeout40

Helloduein00:00:06

SupportsLink-localSignaling(LLS)

CiscoNSFhelpersupportenabled

IETFNSFhelpersupportenabled

Index1/1,floodqueuelength0

Next0x0(0)/t)x0(0)

Lastfloodscanlengthis0,maximumis0

Lastfloodscantimeis0msec,maximumis0msec

NeighborCountis0,Adjacentneighborcountis0

Suppresshellofor0neighbor(s)

R2：

interfaceLoopbackO

interfaceSerial。由

encapsulationframe-relay

ipospfpriority0

noarpframe-relay

frame-relaymapip203broadcast

frame-relaymapip201broadcast

noframe-relayinverse-arp

ipospfnetworkpoint-to-point

routerospf1

log-adjacency-changes

network55area0

network55area0

R3:

interfaceLoopbackO

interfaceSerial。由

encapsulationframe-relay

ipospfnetworkpoint-to-point

ipospfpriority0

noarpframe-relay

frame-relaymapip301broadcast

noframe-relayinverse-arp

!

routerospf1

log-adjacency-changes

network55area0

network55area0

Rl#showipospfneighbor

NeighborIDPriStateDeadTimeAddressInterface

333.30FULL/-00:00:36SerialOX).2

2.2.2.Z0FULL/-00:00:39Serial0A).l

Rl#shiprouteospf

^2issubnetted,1subnets

OZ.2.2,2[110由5]via,00:02:35,SerialO/O.l

62issubnetted,1subnets

O3.33.3[110由5]via,00:01:58,Serial。6.2

NBMA环境下多点子接口:

星型网络，非全互联

须要DR,须要手工指定邻居。

DLCI10.0.0.1301

DLCI302

R1：

interfaceLoopbackO

interfaceSerial。由

noipaddress

encapsulationframe-relay

interfaceSerialO/).!multipoint

frame-relaymapip103broadcast

frame-relaymapip102broadcast

routerospf1

log-adjacency-changes

network55area0

network55area0

Rl#showipospfinterfaces0#.l

SerialO/).!isup,lineprotocolisup

InternetAddress/24,Area0

ProcessID1,RouterID,NetworkTypeNON_BROADCAST,Cost:64

TransmitDelayis1sec,StateDR,Priority1

Nobackupdesignatedrouteronthisnetwork

Timerintervalsconfigured,Hello30,Dead120,Wait120,Retransmit5

oob-resynctimeout120

Helloduein00:00:21

SupportsLink-localSignaling(LLS)

CiscoNSFhelpersupportenabled

IETFNSFhelpersupportenabled

Index1/1/floodqueuelength0

Next0x0(0)/t)x0(0)

Lastfloodscanlengthis0,maximumis0

Lastfloodscantimeis0msec,maximumis0msec

NeighborCountis0,Adjacentneighborcountis0

Suppresshellofor0neighbor(s)

R2；

interfaceSerial。由

encapsulationframe-relay

ipospfnetworknon-broadcast

ipospfpriority0

noarpframe-relay

frame-relaymapip203broadcast

frame-relaymapip201broadcast

noframe-relayinverse-arp

interfaceLoopbackO

end

routerospf1

log-adjacency-changes

network55area0

network55area0

R2#

R3：

interfaceLoopbackO

end

interfaceSerial。由

encapsulationframe-relay

ipospfpriority0

noarpframe-relay

frame-relaymapip301broadcast

noframe-relayinverse-arp

end

routerospf1

log-adjacency-changes

network55area0

network55area0

Rl#showipospfneighbor

NeighborIDPriStateDeadTimeAddressInterface

0FULL/DROTHER00:01:39SerialOA).l

3.33.30FULL/DROTHER00:01:31Serial。用.1

NBMA环境下点到点:

不须要DR,也不须要指定邻居。

R1：

!

interfaceLoopbackO

end

interfaceSerial。由

encapsulationframe-relay

ipospfnetworkpoint-to-point

noarpframe-relay

103broadcast

frame-relaymapip102broadcast

noframe-relayinverse-arp

end

routerospf1

log-adjacency-changes

network55area0

network55area0

RI#showipospfinterfacesO/J

Serial。/)isup,lineprotocolisup

InternetAddress/24,Area0

ProcessID1,RouterID,NetworkTypePOINT_TO_POINT,Cost:64

TransmitDelayis1sec,StatePOINT_TO_POINT

Timerintervalsconfigured,Hello10,Dead40,Wait40,Retransmit5

oob-resynctimeout40

Helloduein00:00:04

SupportsLink-localSignaling(LLS)

CiscoNSFhelpersupportenabled

IETFNSFhelpersupportenabled

Index1/1,floodqueuelength0

Next0x0(0)/t)x0(0)

Lastfloodscanlengthis1,maximumis1

Lastfloodscantimeis0msec,maximumis0msec

NeighborCountis1,Adjacentneighborcountis1

Suppresshellofor0neighbor(s)

NBMA环境下点到多点:

可以当成多个点到点，不须要DR,可以自动发觉邻居。

非全互联，星型网络

须要在各个设备接口下配置：

R2(config)#interfacesO/J

R2(config-if)#ipospfnetworkpoint-to-multipoint

Rl#showipospfinterfacesO/D

Serial。/)isup,lineprotocolisup

InternetAddress/24,Area0

ProcessID1,RouterID,NetworkTypePOINT_TO_MUIIIPOINT；Cost:64

TransmitDelayis1sec,StatePOINT_TO_MULTIPOINT

Timerintervalsconfigured,Hello30,Dead120,Wait120,Retransmit5

oob-resynctimeout120

Helloduein00:00:06

SupportsLink-localSignaling(LLS)

CiscoNSFhelpersupportenabled

IETFNSFhelpersupportenabled

Index1/1/floodqueuelength0

Next0x0(0)/0x0(0)

Lastfloodscanlengthis1,maximumis1

Lastfloodscantimeis0msec,maximumis4msec

NeighborCountis2,Adjacentneighborcountis2

Suppresshellofor0neighbor(s)

Rl#showipospfneighbor

NeighborIDPriStateDeadTimeAddressInterface

Z.2.2.20FULL/-00:01:57Serial。由

33.3.30FULL/-00:01:49Serial。/)

R2#shipospfneighbor

NeighborIDPriStateDeadTimeAddressInterface

l.l.l.l0FULL/-00:01:49Serial。/)

R3#shipospfneighbor

NeighborIDPriState