CCNP ROUTE OSPF MultiArea

Enviado por lesand el Mar, 25/10/2016 - 19:09
Topología
Topologia OSPF Multiarea
Resumen de la actividad:
Configuración de OSPF MultiArea
Objetivo(s):
Configuración de OSPF en Frame-Relay Multipoint
Recursos Utilizados:
2600 Software (C2691-ADVIPSERVICESK9-M), Version 12.4(15)T10, RELEASE SOFTWARE (fc3)
Desarrollo de la actividad:
Configuracion de OSPF en Frame Relay Multipunto (NBMA)
En OSPF existen los network Type: Non-broadcast, Broadcast, Point to Multipoint y Point to multipoint Non-Broadcast para realizar las configuraciones de OSPF con Frame Relay Multipoint.
Por defecto al configurar una interface (multipunto) con OSPF esta quedara como Non-Broadcast (o NBMA). Esto implica que la interface no descrubrira vecinos (usa unicast) y sus timers seran de 30 seg para el hello y 120 seg para el dead. Ademas este tipo de red elige DR, lo cual es importante a considerar debido a que en el caso de una red Hub and Spoke, el DR debe quedar en el HUB.
DP2#show ip ospf interface serial 0/0
Serial0/0 is up, line protocol is up
Internet Address 10.3.0.2/24, Area 3
Process ID 4, Router ID 10.0.12.2, 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 00:00:23
Wait time before Designated router selection 00:01:54
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, 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)
DP2(config)#router ospf 4
DP2(config-router)#neighbor 10.3.0.6
DP2(config-router)#neighbor 10.3.0.7

DP6(config-if)# router ospf 4
DP6(config-router)# neighbor 10.3.0.2
DP6(config-router)#int se0/0
DP6(config-if)#ip ospf priority 0

DP7(config-if)# router ospf 4
DP7(config-router)# neighbor 10.3.0.2
DP6(config-router)#int se0/0
DP6(config-if)#ip ospf priority 0
Configuracion de OSPF en Frame Relay Multipunto (BMA)
Ademas de la configuracion NBMA, esta se puede realizar cambiando el tipo de red a Broadcast (BMA). En este tipo de red los vecinos se descubren de forma automatica (usa multicast). Es importante que el DR se mantenga en el HUB. Para este caso los timers cambian a 10 Seg y 40 Seg
DP2(config)#int se0/0
DP2(config-if)#ip ospf network broadcast

DP6(config-router)#int se0/0
DP6(config-if)#ip ospf network broadcast
DP6(config-if)#ip ospf priority 0

DP6(config-router)#int se0/0
DP6(config-if)#ip ospf network broadcast
DP6(config-if)#ip ospf priority 0
DP2#show ip ospf interface serial 0/0
Serial0/0 is up, line protocol is up
Internet Address 10.3.0.2/24, Area 3
Process ID 4, Router ID 10.0.12.2, Network Type BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 10.0.12.2, Interface address 10.3.0.2
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:07
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 1/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 2
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 2, Adjacent neighbor count is 2
Adjacent with neighbor 192.168.11.1
Adjacent with neighbor 192.168.15.1
Suppress hello for 0 neighbor(s)
DP2#sh
DP2#show ip os
DP2#show ip ospf ne
DP2#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
10.0.12.1 1 FULL/DR 00:00:33 10.0.12.1 FastEthernet0/0
192.168.11.1 0 FULL/DROTHER 00:00:36 10.3.0.7 Serial0/0
192.168.15.1 0 FULL/DROTHER 00:00:34 10.3.0.6 Serial0/0
Más información:
CCNP Routing and Switching ROUTE 300-101 Official Cert Guide