Question Of The Day: 23 April, 2008

Topic: OSPF

Match the following with their associated OSPF LSA Type:

Inter Area Router Link States
Link (Type 8 ) Link States
Net Link States
Inter Area Prefix Link States
Summary ASB Link States
Type-5 AS External Link States
Router Link States
Type-7 AS External Link States
Intra Area Prefix Link States
Summary Net Link States

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Yesterday’s Question

Question Of The Day: 22 April, 2008 

Topic: OSPF

Which ’show’ command will give you detailed information about Type-5 LSAs you are receiving?

Answer: ’show ip ospf database external’

You can use ’show ip ospf database external’ to see detailed information about Type-5 LSAs in the OSPF database:

r1#show ip ospf database external

            OSPF Router with ID (1.1.1.1) (Process ID 100)

                Type-5 AS External Link States

  Routing Bit Set on this LSA
  LS age: 992
  Options: (No TOS-capability, DC)
  LS Type: AS External Link
  Link State ID: 33.33.33.33 (External Network Number )
  Advertising Router: 3.3.3.3
  LS Seq Number: 80000001
  Checksum: 0×9976
  Length: 36
  Network Mask: /32
        Metric Type: 2 (Larger than any link state path)
        TOS: 0
        Metric: 20
        Forward Address: 0.0.0.0
        External Route Tag: 0