Friday, May 24, 2013

Troubleshooting OSPF: Show Commands and Debug Commands

Relevant Debug and Show Commands 

  1. OSPF Show Commands
  2. OSPF Debug Commands 
OSPF Show Commands
  • Show IP Protocols 
    • Data Displayed by the command:
      • OSPF Status and process-id
      • area types configured
      • protocols being redistributed
      • networks being advertised
      • neighbors/gateways
    • helpful in troubleshooting:
      • neighbor relationships
      • missing routes
      • summarization issues 
      • filtering problems 
  • Show IP route OSPF
    • Data Displayed by the Command;
      • OSPF routes from neigbors
      • administrative distance
      • cumulative cost metric
      • route source/interface
    • helpful in troubleshooting:
      • missing routes 
      • summarization issues 
      • filtering problems
      • general troubleshooting 
  • Show IP OSPF Interfaces
    • Data Displayed:
      • Interfaces participating in OSPF
      • Network Type(s)
      • Neighbor count
      • Authentication Type
      • Timer Values
    • Helpful in troubleshooting:
      • neighbor relationships
      • local congiuration issues
      • routing problems
  • Show IP OSPF Neighbors
    • data displayed:
      • Active fully adjacent neighbors
      • router ID of neighbors
      • IP address/interface of neighbors
      • dead time of neighbors
      • neighbor state/DR state (designated router state)
    • Helpful for;
      • Neighbor relationships
      • local configuration issues
  • Show IP OSPF Database
    • Data Displayed:
    • Helpful For:
      • Missing Routes
      • Filtering Problems
      • General troubleshooting 

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