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New Member

Need help with an OSPF hub and spoke through frame relay config...

I am currently studying for my CCNA exam and have been using a simulator to test out configurations. However I have run into a problem. I can't seem to get the configuration to work like the book says it should.

   PC1----R1 ---- PC2

               |

        {FRAME RELAY}

          /                 \

       R2                 R3

         |                   |

       PC3              PC4

Now. I believe I have frame relay configured correctly, since all 3 routers can talk to each other.

I have R1 configured with the network command for all 4 interfaces it is using (2 sub interfaces)

R2 has the network command for its LAN, R3 has the network command for its LAN.

For some reason R1 is not advertising its LAN to the other two routers. I can however use "default-information originate" on Router 1 and this will then make it advertise its route to R2 and R3. From the way I read it, this command should not be necessary here. So why isn't R1 telling R2 and R3 about its two lan connections?

R1 will advertise R3 to R2 and vice versa. So i don't get why its not advertising PC1 and PC2.

Also the entire setup is in area 0.

Everyone's tags (7)
2 REPLIES
Hall of Fame Super Gold

Re: Need help with an OSPF hub and spoke through frame relay con

What's the output of the command "sh ip ospf int brief"?

New Member

Re: Need help with an OSPF hub and spoke through frame relay con

It wouldn't accept the brief tag but here is the long version from R1

FastEthernet1/0 is up, line protocol is up

  Internet Address 10.1.1.1/24, Area 0

  Process ID 1, Router ID 10.1.1.1, Network Type BROADCAST, Cost: 1

  Transmit Delay is 1 sec, State DROTHER, Priority 1

  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

    Hello due in 00:00:02

  Index 3/3, flood queue length 0

  Next 0x0(0)/ox0(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)

Serial0/0.1 is up, line protocol is up

  Internet Address 10.1.12.1/30, Area 0

  Process ID 1, Router ID 10.1.1.1, Network Type POINT_TO_POINT, Cost: 10

  Transmit Delay is 1 sec, State POINT_TO_POINT

  Designated Router (ID) 10.1.12.2, Interface address 10.1.12.1

  Backup Designated router (ID) 10.1.12.1, Interface address 10.1.12.1

  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

    Hello due in 00:00:02

  Index 1/1, flood queue length 0

  Next 0x0(0)/ox0(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 1, Adjacent neighbor count is 1

  Adjacent with neighbor 10.1.12.2 (Designated Router)

  Suppress hello for 0 neighbor(s)

Serial0/0.2 is up, line protocol is up

  Internet Address 10.1.13.1/30, Area 0

  Process ID 1, Router ID 10.1.1.1, Network Type POINT_TO_POINT, Cost: 10

  Transmit Delay is 1 sec, State POINT_TO_POINT

  Designated Router (ID) 10.1.13.2, Interface address 10.1.13.1

  Backup Designated router (ID) 10.1.13.1, Interface address 10.1.13.1

  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

    Hello due in 00:00:02

  Index 1/1, flood queue length 0

  Next 0x0(0)/ox0(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 1, Adjacent neighbor count is 1

  Adjacent with neighbor 10.1.13.2 (Designated Router)

  Suppress hello for 0 neighbor(s)

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