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OSPF over Frame-Relay

Written by Rene Molenaar on . Posted in Frame Relay

Scenario:

After successfully configuring the previous frame-relay lab you feel it's time to try and run OSPF over this frame-relay link. OSPF knows many different network types and every type has a different solution, up to you to try them all out!

Hint: this lab uses the same topology as the "Frame-Relay Basics" lab, make sure you configured this lab first, then continue with this one.

Goal:

  • Create loopbacks on all routers:
    Paris: 1.1.1.1 /24
    Berlin: 2.2.2.2 /24
    Stockholm: 3.3.3.3 /24
  • Configure OSPF on all routers using the point-to-multipoint interface (192.168.123.X subnet).
  • Advertise all loopbacks in OSPF.
  • Paris should be the OSPF designated router.
  • Configure the OSPF network type on all routers to "Broadcast", ensure you have full connectivity to all subnets.
  • Configure the OSPF network type on all routers to "Non-Broadcast", ensure you still have full connectivity.
  • Configure the OSPF network type on all routers to "Point-to-Multipoint", ensure you still have full connectivity.
  • Configure the OSPF network type on all routers to "Point-to-Multipoint non-broadcast", ensure you still have full connectivity.

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

OSPF over Frame-Relay

Video Solution:

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Comments (13)

  • avatar
    majuza
    2010-09-01 15:29:00

    Hi Everyone, I m trying to add these configs on to GNS3 an I get this error message"206-unable to create UDP NIO" please help

  • avatar
    dmb2002man
    2010-09-22 03:32:53

    Is there a way to setup a dlci from stockholm to berlin. How would you connect the serial connection for it. It would be for redundancy in case Paris router went down then stockholm and berlin could still reach each other.

    thanks

  • avatar
    ReneMolenaar
    2010-09-22 09:11:02

    Hi Joe,

    This is no problem...just create another PVC on the Frame-Relay switch. You could use DLCI 203 on router Berlin and DLCI 302 on router Stockholm.

    On the frame-relay switch you need to configure this PVC:

    Serial 0/1
    Frame-relay route 203 S0/2 302

    Serial 0/2
    Frame-relay route 302 s0/1 203

    That takes care of the frame-relay switch.

    Of course on the Routers you need to configure this PVC as well...you can create a new sub-interface and put the DLCI there.

  • avatar
    ReneMolenaar
    2010-10-25 19:54:29

    You are right, will need to fix this one...

  • avatar
    Paul Lawley-Walker
    2011-06-12 14:25:56

    Great tutorial .... Many thanks, I learned lots from this vid ...

  • avatar
    Kaage
    2011-06-14 12:06:24

    Hi, there are only startup configs without .net file

  • avatar
    uscallesen
    2011-09-14 10:08:52

    The GNS3 topology file is missing !

  • avatar
    binaryops
    2012-01-12 22:50:35

    Hey Rene, did this get left out of the .zip file by chance? It's not there and wanted to see if you could upload it please!

    Thank you so much!
    Binaryops

  • avatar
    sunyijanika
    2012-05-11 17:32:50

    Can somebody help me with this lab?? I configured it but, Unfortunately I can just see one ospf route on Paris, I got confused..

    FRSW

    FRSW#sh frame-relay route
    Input Intf Input Dlci Output Intf Output Dlci Status
    Serial0/0 102 Serial0/1 201 active
    Serial0/0 103 Serial0/2 301 active
    Serial0/1 201 Serial0/0 102 active
    Serial0/2 301 Serial0/0 103 active

    R1

    interface Loopback0
    ip address 1.1.1.1 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.1 multipoint
    ip address 192.168.123.1 255.255.255.0
    ip ospf priority 100
    frame-relay map ip 192.168.123.2 102 broadcast
    frame-relay map ip 192.168.123.3 103 broadcast
    !
    router ospf 1
    log-adjacency-changes
    network 1.1.1.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0
    neighbor 192.168.123.2
    neighbor 192.168.123.3

    --------------------
    Paris#sh ip route

    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.1
    1.0.0.0/24 is subnetted, 1 subnets
    C 1.1.1.0 is directly connected, Loopback0
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/65] via 192.168.123.3, 00:16:22, Serial0/0.1

    R2

    interface Loopback0
    ip address 2.2.2.2 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.2 multipoint
    ip address 192.168.123.2 255.255.255.0
    frame-relay map ip 192.168.123.1 201 broadcast
    frame-relay map ip 192.168.123.3 201 broadcast
    !
    router ospf 1
    log-adjacency-changes
    network 2.2.2.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0

    ------------------
    Berlin#sh ip route


    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.2
    2.0.0.0/24 is subnetted, 1 subnets
    C 2.2.2.0 is directly connected, Loopback0


    R3

    interface Loopback0
    ip address 3.3.3.3 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.3 multipoint
    ip address 192.168.123.3 255.255.255.0
    frame-relay map ip 192.168.123.1 301 broadcast
    frame-relay map ip 192.168.123.2 301 broadcast


    router ospf 1
    log-adjacency-changes
    network 3.3.3.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0

    -----------------------
    Stockholm#sh ip route


    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.3
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/65] via 192.168.123.1, 00:04:22, Serial0/0.3
    3.0.0.0/24 is subnetted, 1 subnets
    C 3.3.3.0 is directly connected, Loopback0


    What did I miss? please!

  • avatar
    sunyijanika
    2012-05-12 09:38:10

    enter your message here...

    sunyijanika wrote:
    Can somebody help me with this lab?? I configured it but, Unfortunately I can just see one ospf route on Paris, I got confused..

    FRSW

    FRSW#sh frame-relay route
    Input Intf Input Dlci Output Intf Output Dlci Status
    Serial0/0 102 Serial0/1 201 active
    Serial0/0 103 Serial0/2 301 active
    Serial0/1 201 Serial0/0 102 active
    Serial0/2 301 Serial0/0 103 active

    R1

    interface Loopback0
    ip address 1.1.1.1 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.1 multipoint
    ip address 192.168.123.1 255.255.255.0
    ip ospf priority 100
    frame-relay map ip 192.168.123.2 102 broadcast
    frame-relay map ip 192.168.123.3 103 broadcast
    !
    router ospf 1
    log-adjacency-changes
    network 1.1.1.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0
    neighbor 192.168.123.2
    neighbor 192.168.123.3

    --------------------
    Paris#sh ip route

    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.1
    1.0.0.0/24 is subnetted, 1 subnets
    C 1.1.1.0 is directly connected, Loopback0
    3.0.0.0/32 is subnetted, 1 subnets
    O 3.3.3.3 [110/65] via 192.168.123.3, 00:16:22, Serial0/0.1

    R2

    interface Loopback0
    ip address 2.2.2.2 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.2 multipoint
    ip address 192.168.123.2 255.255.255.0
    frame-relay map ip 192.168.123.1 201 broadcast
    frame-relay map ip 192.168.123.3 201 broadcast
    !
    router ospf 1
    log-adjacency-changes
    network 2.2.2.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0

    ------------------
    Berlin#sh ip route


    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.2
    2.0.0.0/24 is subnetted, 1 subnets
    C 2.2.2.0 is directly connected, Loopback0


    R3

    interface Loopback0
    ip address 3.3.3.3 255.255.255.0
    !
    interface Serial0/0
    no ip address
    encapsulation frame-relay
    serial restart-delay 0
    !
    interface Serial0/0.3 multipoint
    ip address 192.168.123.3 255.255.255.0
    frame-relay map ip 192.168.123.1 301 broadcast
    frame-relay map ip 192.168.123.2 301 broadcast


    router ospf 1
    log-adjacency-changes
    network 3.3.3.0 0.0.0.255 area 0
    network 192.168.123.0 0.0.0.255 area 0

    -----------------------
    Stockholm#sh ip route


    Gateway of last resort is not set

    C 192.168.123.0/24 is directly connected, Serial0/0.3
    1.0.0.0/32 is subnetted, 1 subnets
    O 1.1.1.1 [110/65] via 192.168.123.1, 00:04:22, Serial0/0.3
    3.0.0.0/24 is subnetted, 1 subnets
    C 3.3.3.0 is directly connected, Loopback0


    What did I miss out? please!
  • avatar
    ReneMolenaar
    2012-05-16 09:29:28

    Check the OSPF network type for the serial interface. I believe by default it's non-broadcast. You'll have to change the network type or specify neighbors manually.

  • avatar
    sunyijanika
    2012-05-16 12:24:19

    Thanks! You're right, default is non-broadcast. I just left a neighbor command on one of the spoke routers, but without that command the neighborship came up.