OSPF在FR环境下的六种网络类型完全配置总结.docx
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OSPF在FR环境下的六种网络类型完全配置总结.docx
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OSPF在FR环境下的六种网络类型完全配置总结
OSPF在FR环境下的六种网络类型完全配置总结
1:
Hub-and-spoke上的NBMA模式(也是默认模式)
总结:
HUB-AND-SPOKE上NBMA模式特点:
(1) 帧中继接口IP地址都在同一子网上;
(2) 要手动配置OSPF邻居;
(3) 需要选举DR,需要手动控制DR在HUB端;
(4) 需要手工进行帧中继映射。
验证:
1:
验证拓扑:
2:
配置过程:
(1) FR交换机的配置.
frame-relayswitching
ints0/0
enfrietf
frame-relayintf-typedce
clockrate64000
frame-relaylmi-typeansi
frame-relayroute102interfaces0/1201
frame-relayroute103interfaces0/2301
frame-relayroute104interfaces0/3401
nosh
ints0/1
enfrietf
frame-relayintf-typedce
clockrate64000
frame-relaylmi-typeansi
frame-relayroute201interfaces0/0102
frame-relayroute203interfaces0/2302
frame-relayroute204interfaces0/3402
nosh
ints0/2
enfrietf
frame-relayintf-typedce
clockrate64000
frame-relaylmi-typeansi
frame-relayroute301interfaces0/0103
frame-relayroute302interfaces0/1203
frame-relayroute304interfaces0/3403
nosh
ints0/3
enfrietf
frame-relayintf-typedce
clockrate64000
frame-relaylmi-typeansi
frame-relayroute401interfaces0/0104
frame-relayroute402interfaces0/1204
frame-relayroute403interfaces0/2304
nosh
路由器R1
R1(config)#ints0/0
R1(config-if)#encapsulationframe-relay
R1(config-if)#ipadd192.168.1.1255.255.255.0
R1(config-if)#nosh
R1(config-if)#intlo0
R1(config-if)#ipadd1.1.1.1255.255.255.0
interfaceSerial0/0
ipaddress192.168.1.1255.255.255.0
encapsulationframe-relay
noframe-relayinverse-arp
frame-relaymapip192.168.1.2102broadcast
frame-relaymapip192.168.1.3103broadcast
frame-relaymapip192.168.1.4104broadcast
路由器R2
R2(config)#ints0/0
R2(config-if)#ipadd192.168.1.2255.255.255.0
R2(config-if)#encapsulationframe-relay
R2(config-if)#noframe-relayinverse-arp
R2(config-if)#frame-relaymapip192.168.1.1201broadcast
R2(config-if)#frame-relaymapip192.168.1.3203broadcast
R2(config-if)#frame-relaymapip192.168.1.4204broadcast
R2(config-if)#nosh
R2(config-if)#intlo0
R2(config-if)#ipadd2.2.2.2255.255.255.0
路由器R3
R3(config)#ints0/0
R3(config-if)#encapsulationframe-relay
R3(config-if)#noframe-relayinverse-arp
R3(config-if)#ipadd192.168.1.3255.255.255.0
R3(config-if)#frame-relaymapip192.168.1.1301broadcast
R3(config-if)#frame-relaymapip192.168.1.2302broadcast
R3(config-if)#frame-relaymapip192.168.1.4304broadcast
R3(config-if)#nosh
R3(config-if)#intlo0
R3(config-if)#ipadd3.3.3.3255.255.255.0
路由器R4
R4(config)#ints0/0
R4(config-if)#encapsulationframe-relay
R4(config-if)#noframe-relayinverse-arp
R4(config-if)#ipadd192.168.1.4255.255.255.0
R4(config-if)#frame-relaymapip192.168.1.1401broadcast
R4(config-if)#frame-relaymapip192.168.1.2402broadcast
R4(config-if)#frame-relaymapip192.168.1.3403broadcast
R4(config-if)#nosh
R4(config-if)#intlo0
R4(config-if)#ipadd4.4.4.4255.255.255.0
(2) 配置OSPF路由
R1(config)#routeros1
R1(config-router)#network0.0.0.0255.255.255.255a0
R2(config)#routeros1
R2(config-router)#network0.0.0.0255.255.255.255a0
R3(config)#routeros1
R3(config-router)#net0.0.0.0255.255.255.255a0
R3(config-router)#noau
R4(config)#routeros1
R4(config-router)#net0.0.0.0255.255.255.255a0
R1#shiposnei //发现没有任何邻居
R1#shoiposinterfaces0/0
Serial0/0isup,lineprotocolisup
InternetAddress192.168.1.1/24,Area0
ProcessID1,RouterID1.1.1.1,NetworkTypeNON_BROADCAST,Cost:
64
TransmitDelayis1sec,StateDR,Priority1
DesignatedRouter(ID)1.1.1.1,Interfaceaddress192.168.1.1
Nobackupdesignatedrouteronthisnetwork
Timerintervalsconfigured,Hello30,Dead120,Wait120,Retransmit5
oob-resynctimeout120
Helloduein00:
00:
08
SupportsLink-localSignaling(LLS)
Index1/1,floodqueuelength0
Next0x0(0)/0x0(0)
Lastfloodscanlengthis0,maximumis0
Lastfloodscantimeis0msec,maximumis0msec
NeighborCountis0,Adjacentneighborcountis0
Suppresshellofor0neighbor(s)
//发现帧中继缺省情况下是NBMA网络,所以需要手动指邻居.
R1(config)#routeros1
R1(config-router)#neighbor192.168.1.2
R1(config-router)#neighbor192.168.1.3
R1(config-router)#neighbor192.168.1.4
R1#shoiposnei
NeighborID Pri State DeadTime Address Interface
2.2.2.2 1 FULL/DROTHER 00:
01:
58 192.168.1.2 Serial0/0
3.3.3.3 1 FULL/DROTHER 00:
01:
58 192.168.1.3 Serial0/0
4.4.4.4 1 FULL/DR 00:
01:
58 192.168.1.4 Serial0/0
R2#shoiposnei
NeighborID Pri State DeadTime Address Interface
1.1.1.1 1 FULL/DROTHER 00:
01:
41 192.168.1.1 Serial0/0
Hub端和所有的Spoke端都建立了邻居,Spoke端之间没能建邻居,而且发现路由也没能全部学习到。
解决方法是保证Hub端成为DR。
R1(config)#ints0/0
R1(config-if)#ipospfpriority255
R2(config)#ints0/0
R2(config-if)#ipospfpriority0
R3(config)#ints0/0
R3(config-if)#ipospfpriority0
R4(config)#ints0/0
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