Skip navigation
Cisco Learning Home > Certifications > Routing & Switching (CCNP) > Discussions

_Communities

This Question is Not Answered 1 Correct Answer available (4 pts)
1443 Views 4 Replies Latest reply: Dec 29, 2012 3:13 AM by Annu RSS

Currently Being Moderated

OSPF NBMA Adjacencies

Nov 17, 2011 3:06 PM

CCNP-Future-CCIE 137 posts since
Feb 16, 2010

I'm struggling with getting my head around OSPF NBMA configuration.

With the configuration I have right now the adjacency drops and reloads periodically.

 

The errors are happening about every 60 seconds on all 3 routers:

 

 

R3

R3#

*Nov 17 18:04:23.563: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on Serial1/0 from FULL to DOWN, Neighbor Down: Dead timer expired

R3#

*Nov 17 18:04:43.635: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on Serial1/0 from LOADING to FULL, Loading Done

R3#

*Nov 17 18:05:33.483: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on Serial1/0 from FULL to DOWN, Neighbor Down: Dead timer expired

R3#

*Nov 17 18:05:53.643: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on Serial1/0 from LOADING to FULL, Loading Done

 

 

 

In the diagram, R1 is the hub and R2 and R3 are spokes.

 

FR1 has these DLCI mappings:

port 1, DLCI 102 to port 2, DLCI 201

port 1, DLCI 103 to port 3, DLCI 301

Capture.PNG

 

 

 

R1R2R3

interface Serial1/0

ip address 123.1.1.1 255.255.255.0

encapsulation frame-relay

ip ospf network broadcast

serial restart-delay 0

frame-relay map ip 123.1.1.3 103

frame-relay map ip 123.1.1.2 102

!

interface Loopback0

ip address 1.1.1.1 255.255.255.255

ip ospf 1 area 1

!

router ospf 1

log-adjacency-changes

network 123.1.1.0 0.0.0.255 area 0

interface Serial1/0

ip address 123.1.1.2 255.255.255.0

encapsulation frame-relay

ip ospf network broadcast

serial restart-delay 0

frame-relay interface-dlci 201

!

interface Loopback0

ip address 2.2.2.2 255.255.255.255

ip ospf 1 area 2

!

router ospf 1

log-adjacency-changes

network 123.1.1.0 0.0.0.255 area 0

interface Serial1/0

ip address 123.1.1.3 255.255.255.0

encapsulation frame-relay

ip ospf network broadcast

serial restart-delay 0

frame-relay interface-dlci 301

!

interface Loopback0

ip address 3.3.3.3 255.255.255.255

ip ospf 1 area 3

!

router ospf 1

log-adjacency-changes

network 123.1.1.0 0.0.0.255 area 0

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)