OSPF Solutions
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OSPF Solutions OSPF over Non-Broadcast Media (unicast hellos, DR/BDR election) R5:interface Serial0/0 ip ospf 1 area 0 ! router ospf 1 neighbor 155.1.0.3 neighbor 155.1.0.1 neighbor 155.1.0.2 neighbor 155.1.0.4 R1: (Similar config on other routers) interface Serial0/0 ip ospf 1 area 0 frame-relay map ip 155.1.0.2 105 frame-relay map ip 155.1.0.3 105 frame-relay map ip 155.1.0.4 105 OSPF DR/BDR Election Manipulation (Higher priority becomes the DR, no preemption) R6# interface FastEthernet0/0.146 ip ospf priority 255 R4# interface FastEthernet0/1 ip ospf priority 0 OSPF Network Point-to-Point Rack1R4#show ip ospf interface Serial0/1 Serial0/1 is up, line protocol is up Internet Address 155.1.45.4/24, Area 0 Process ID 1, Router ID 223.255.255.255, Network Type POINT_TO_POINT, Cost: 64 Enabled by interface config, including secondary ip addresses Transmit Delay is 1 sec, State POINT_TO_POINT, Network Point-to-Multipoint (partially meshed NBMA network designs) R5: interface Serial0/0 ip ospf network point-to-multipoint frame-relay map ip 155.1.0.1 501 broadcast frame-relay map ip 155.1.0.2 502 broadcast frame-relay map ip 155.1.0.3 503 broadcast frame-relay map ip 155.1.0.4 504 broadcast R1: interface Serial0/0 ip ospf network point-to-multipoint frame-relay map ip 155.1.0.5 105 broadcast NOTE: Both Point-to-Point & Point-to-Multipoint sends hellos as multicasts , no DR/BDR election . OSPF Network Point-to-Multipoint Non-Broadcast (unicast hellos, no DR/BDR election ) R5: interface Serial0/0 ip ospf network point-to-multipoint non-
description
ccie ospf
Transcript of OSPF Solutions
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OSPF SolutionsOSPF over Non-Broadcast Media (unicast hellos, DR/BDR election)R5:interface Serial0/0 ip ospf 1 area 0
!
router ospf 1
neighbor 155.1.0.3
neighbor 155.1.0.1
neighbor 155.1.0.2
neighbor 155.1.0.4R1: (Similar config on other routers)
interface Serial0/0
ip ospf 1 area 0
frame-relay map ip 155.1.0.2 105
frame-relay map ip 155.1.0.3 105
frame-relay map ip 155.1.0.4 105
OSPF DR/BDR Election Manipulation (Higher priority becomes the DR, no preemption)R6#
interface FastEthernet0/0.146
ip ospf priority 255R4#
interface FastEthernet0/1
ip ospf priority 0
OSPF Network Point-to-PointRack1R4#show ip ospf interface Serial0/1
Serial0/1 is up, line protocol is up
Internet Address 155.1.45.4/24, Area 0 Process ID 1, Router ID 223.255.255.255, Network Type POINT_TO_POINT, Cost: 64
Enabled by interface config, including secondary ip addresses
Transmit Delay is 1 sec, State POINT_TO_POINT,
Network Point-to-Multipoint (partially meshed NBMA network designs)
R5:
interface Serial0/0
ip ospf network point-to-multipoint
frame-relay map ip 155.1.0.1 501 broadcast
frame-relay map ip 155.1.0.2 502 broadcast
frame-relay map ip 155.1.0.3 503 broadcast
frame-relay map ip 155.1.0.4 504 broadcast
R1:
interface Serial0/0
ip ospf network point-to-multipoint
frame-relay map ip 155.1.0.5 105 broadcast
NOTE: Both Point-to-Point & Point-to-Multipoint sends hellos as multicasts, no DR/BDR election.
OSPF Network Point-to-Multipoint Non-Broadcast (unicast hellos, no DR/BDR election)R1#interface Serial0/0
ip ospf network point-to-multipoint non-broadcast frame-relay map ip 155.1.0.5 105
R2#interface Serial0/0
ip ospf network point-to-multipoint non-broadcast frame-relay map ip 155.1.0.5 205
R5:interface Serial0/0
ip ospf network point-to-multipoint non-broadcast
frame-relay map ip 155.1.0.1 501
frame-relay map ip 155.1.0.2 502
frame-relay map ip 155.1.0.3 503
frame-relay map ip 155.1.0.4 504
!
router ospf 1
neighbor 155.1.0.1
neighbor 155.1.0.2
neighbor 155.1.0.3
neighbor 155.1.0.4
OSPF Network Loopback (Loopback0 interfaces are advertised into OSPF as /32 host routes)interface Loopback0
ip ospf 1 area 0
ip ospf network point-to-point
