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Simply OSPF NBMA question

Istvan kelemen
Level 1
Level 1

Hey!

LAB: OSPF over multipoint frame relay (hub and 2 spokers).

Neighbors are not coming up.

Wireshark capture is showing 1-1 hello packets to 192.168.0.66 and to 192.168.0.67 but that's all.

Neighbor command is not shown in the sh run, and the prioriti is 0.

R1

interface Loopback0

ip address 1.1.1.1 255.255.255.0

interface Serial0/0.1 multipoint

ip address 192.168.0.65 255.255.255.192

ip ospf priority 0

frame-relay map ip 192.168.0.66 102 broadcast

frame-relay map ip 192.168.0.67 103 broadcast

router ospf 1

router-id 1.1.1.1

log-adjacency-changes

network 1.1.1.0 0.0.0.0 area 0

network 192.168.0.64 0.0.0.63 area 0

FR map is active

Neighbor ID     Pri   State           Dead Time   Address         Interface

N/A               0   ATTEMPT/DROTHER 00:01:21    192.168.0.66    Serial0/0.1

N/A               0   ATTEMPT/DROTHER 00:01:21    192.168.0.67    Serial0/0.1

Serial0/0.1 is up, line protocol is up

  Internet Address 192.168.0.65/26, Area 0

  Process ID 1, Router ID 1.1.1.1, Network Type NON_BROADCAST, Cost: 64

  Transmit Delay is 1 sec, State DROTHER, Priority 0

  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 00:00:00

  Supports Link-local Signaling (LLS)

  Index 1/1, 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)

R2

interface Loopback0

ip address 2.2.2.2 255.255.255.0

interface Serial0/0.1 multipoint

ip address 192.168.0.66 255.255.255.192

ip ospf priority 0

frame-relay map ip 192.168.0.65 201 broadcast

frame-relay map ip 192.168.0.67 201 broadcast

router ospf 1

router-id 2.2.2.2

log-adjacency-changes

network 2.2.2.0 0.0.0.0 area 0

network 192.168.0.64 0.0.0.63 area 0

Neighbor ID     Pri   State           Dead Time   Address         Interface

1.1.1.1           0   INIT/DROTHER    00:01:39    192.168.0.65    Serial0/0.1

Serial0/0.1 is up, line protocol is up

  Internet Address 192.168.0.66/26, Area 0

  Process ID 1, Router ID 2.2.2.2, Network Type NON_BROADCAST, Cost: 64

  Transmit Delay is 1 sec, State DROTHER, Priority 0

  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 00:00:19

  Supports Link-local Signaling (LLS)

  Index 1/1, 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 1, Adjacent neighbor count is 0

  Suppress hello for 0 neighbor(s)

R3

interface Loopback0

ip address 3.3.3.3 255.255.255.0

interface Serial0/0.1 multipoint

ip address 192.168.0.67 255.255.255.192

ip ospf priority 0

frame-relay map ip 192.168.0.65 301 broadcast

frame-relay map ip 192.168.0.67 301 broadcast

router ospf 1

router-id 3.3.3.3

log-adjacency-changes

network 3.3.3.0 0.0.0.0 area 0

network 192.168.0.64 0.0.0.63 area 0

Neighbor ID     Pri   State           Dead Time   Address         Interface

1.1.1.1           0   INIT/DROTHER    00:00:30    192.168.0.65    Serial0/0.1

Serial0/0.1 is up, line protocol is up

  Internet Address 192.168.0.67/26, Area 0

  Process ID 1, Router ID 3.3.3.3, Network Type NON_BROADCAST, Cost: 64

  Transmit Delay is 1 sec, State DROTHER, Priority 0

  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 00:00:16

  Supports Link-local Signaling (LLS)

  Index 1/1, 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 1, Adjacent neighbor count is 0

  Suppress hello for 0 neighbor(s)

Thanks!

2 Replies 2

Richard Burts
Hall of Fame
Hall of Fame

Istvan

The essence of your problem is that assigning ip ospf priority 0 on all of the serial interfaces is preventing any router from becoming DR. And on a multipoint connection some router needs to function as DR. My suggestion is to configure the priority to 1 on R1. I believe that this will solve your problem.

HTH

Rick

HTH

Rick

Yea thanks! Exactly! I just watched Jeremy's tutorial video 5 times to get that detail, but thanks!!

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