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Nbr 3.3.3.3 on Serial1/0.1 from FULL to DOWN, Neighbor Down: Dead Timer Expired

write2irfan
Level 1
Level 1

                   I am trying a LAB in GNS 3 , getting dead timer expired , i have verified Timers in all routers , these are same , I can ping from R5 to from out side of OSP area. getting some drops. any help

1 Accepted Solution

Accepted Solutions

irfan

Doing OSPF over Frame Relay can become complex and I believe that you may be encountering several issues that can happen in this type of environment. The first thing that I notice is the difference in the frame relay maps configured on the interfaces of R3. On the serial connected to R5 you have this:

frame-relay map ip 10.35.6.2 305

frame-relay map ip 10.35.6.3 306

This map does not contain the optional parameter to enable forwarding of broadcast and multicast packets. I think it would be better if your map was like this

frame-relay map ip 10.35.6.2 305 broadcast

frame-relay map ip 10.35.6.3 306 broadcast

I believe that there are also issues with the mismatch of OSPF network type between the router interfaces. On R3 you have this:

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

  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT,

and on R5 you have this

  Process ID 1, Router ID 5.5.5.5, Network Type POINT_TO_POINT, Cost: 64

  Transmit Delay is 1 sec, State POINT_TO_POINT,

HTH

Rick

HTH

Rick

View solution in original post

4 Replies 4

Richard Burts
Hall of Fame
Hall of Fame

If you would provide some additional information we might be able to provide better assistance. For a start it would be helpful to see the interface configuration of both of the routers. Also it might be good if you post the output of show ip ospf interface from both routers.

HTH

Rick

HTH

Rick

Please find run conf from R3, R5 & R6.in the end i have pasted sh ip osp int

R3

!

interface Loopback1000

ip address 3.3.3.3 255.255.255.0

ip ospf network point-to-point

!

!

interface Serial1/0

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/0.1 multipoint

ip address 10.12.3.3 255.255.255.0

ip ospf priority 0

frame-relay map ip 10.12.3.1 301 broadcast

frame-relay map ip 10.12.3.2 301 broadcast

!

interface Serial1/1

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/1.1 multipoint

ip address 10.35.6.1 255.255.255.0

ip ospf network point-to-multipoint

frame-relay map ip 10.35.6.2 305

frame-relay map ip 10.35.6.3 306

!

!

router ospf 1

router-id 3.3.3.3

log-adjacency-changes

network 3.3.3.3 0.0.0.0 area 0

network 10.12.3.0 0.0.0.255 area 0

network 10.35.6.1 0.0.0.0 area 356

!

R5

interface Loopback1000

ip address 5.5.5.5 255.255.255.0

ip ospf network point-to-point

!

!

interface Serial1/0

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/0.1 point-to-point

ip address 10.35.6.2 255.255.255.0

ip ospf hello-interval 30

frame-relay interface-dlci 503  

!

router ospf 1

router-id 5.5.5.5

log-adjacency-changes

network 5.5.5.5 0.0.0.0 area 356

network 10.35.6.2 0.0.0.0 area 356

!

R6

!

interface Loopback1000

ip address 6.6.6.6 255.255.255.0

ip ospf network point-to-point

!

interface Serial1/0

no ip address

encapsulation frame-relay

serial restart-delay 0

!

interface Serial1/0.1 point-to-point

ip address 10.35.6.3 255.255.255.0

ip ospf network point-to-multipoint

ip ospf hello-interval 10

frame-relay interface-dlci 603  

!

!

router ospf 1

router-id 6.6.6.6

log-adjacency-changes

network 6.6.6.6 0.0.0.0 area 356

network 10.35.6.0 0.0.0.255 area 356

!

****************************

R3#sh ip osp int

Serial1/0.1 is up, line protocol is up

  Internet Address 10.12.3.3/24, 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

  Designated Router (ID) 1.1.1.1, Interface address 10.12.3.1

  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 00:00:29

  Supports Link-local Signaling (LLS)

  Index 2/2, flood queue length 0

  Next 0x0(0)/0x0(0)

  Last flood scan length is 1, maximum is 1

  Last flood scan time is 0 msec, maximum is 0 msec

  Neighbor Count is 1, Adjacent neighbor count is 1

    Adjacent with neighbor 1.1.1.1  (Designated Router)

  Suppress hello for 0 neighbor(s)

Loopback1000 is up, line protocol is up

  Internet Address 3.3.3.3/24, Area 0

  Process ID 1, Router ID 3.3.3.3, Network Type POINT_TO_POINT, Cost: 1

  Transmit Delay is 1 sec, State POINT_TO_POINT,

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

    oob-resync timeout 40

  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)

Serial1/1.1 is up, line protocol is up

  Internet Address 10.35.6.1/24, Area 356

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

  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT,

  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 1/3, flood queue length 0

  Next 0x0(0)/0x0(0)

  Last flood scan length is 1, maximum is 3

  Last flood scan time is 0 msec, maximum is 4 msec

  Neighbor Count is 1, Adjacent neighbor count is 1

    Adjacent with neighbor 5.5.5.5

  Suppress hello for 0 neighbor(s)

*******************************

R5#sh ip osp int

Serial1/0.1 is up, line protocol is up

  Internet Address 10.35.6.2/24, Area 356

  Process ID 1, Router ID 5.5.5.5, Network Type POINT_TO_POINT, Cost: 64

  Transmit Delay is 1 sec, State POINT_TO_POINT,

  Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

    oob-resync timeout 120

    Hello due in 00:00:25

  Supports Link-local Signaling (LLS)

  Index 2/2, flood queue length 0

  Next 0x0(0)/0x0(0)

  Last flood scan length is 1, maximum is 1

  Last flood scan time is 0 msec, maximum is 0 msec

  Neighbor Count is 1, Adjacent neighbor count is 1

    Adjacent with neighbor 3.3.3.3

  Suppress hello for 0 neighbor(s)

Loopback1000 is up, line protocol is up

  Internet Address 5.5.5.5/24, Area 356

  Process ID 1, Router ID 5.5.5.5, Network Type POINT_TO_POINT, Cost: 1

  Transmit Delay is 1 sec, State POINT_TO_POINT,

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

    oob-resync timeout 40

  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)

Regards,

irfan

irfan

Doing OSPF over Frame Relay can become complex and I believe that you may be encountering several issues that can happen in this type of environment. The first thing that I notice is the difference in the frame relay maps configured on the interfaces of R3. On the serial connected to R5 you have this:

frame-relay map ip 10.35.6.2 305

frame-relay map ip 10.35.6.3 306

This map does not contain the optional parameter to enable forwarding of broadcast and multicast packets. I think it would be better if your map was like this

frame-relay map ip 10.35.6.2 305 broadcast

frame-relay map ip 10.35.6.3 306 broadcast

I believe that there are also issues with the mismatch of OSPF network type between the router interfaces. On R3 you have this:

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

  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT,

and on R5 you have this

  Process ID 1, Router ID 5.5.5.5, Network Type POINT_TO_POINT, Cost: 64

  Transmit Delay is 1 sec, State POINT_TO_POINT,

HTH

Rick

HTH

Rick

maping frame relay with broad cast have solve the error.

As per LAB objecties i ahev to keep R3 p-to-multipoint , and R5/R6 Pointy-to-point.

any way its ok now. it was a learning for me. but i am still wondering that timers are concern to broadcast also.

frame-relay map ip 10.35.6.2 305 broadcast

frame-relay map ip 10.35.6.3 306 broadcast