Which three pieces of information are carried on OSPF type 3 LSAs?

Which three pieces of information are carried on OSPF type 3 LSAs? (Choose three)
A. metric
B. authentication type
C. link state
D. IP subnet
E. external route tag
F. subnet mask

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3 thoughts on “Which three pieces of information are carried on OSPF type 3 LSAs?

  1. On a second though if “C” was “link state ID”, instead of “link state”, A,C and F would be more accurate.

  2. A, D, F

    There is IP prefix (192.168.1.0), Network Mask (/24) and a Metric (10). See below:
    R1#show ip ospf database summary

    OSPF Router with ID (1.1.1.1) (Process ID 1)

    Summary Net Link States (Area 10)

    Routing Bit Set on this LSA
    LS age: 872
    Options: (No TOS-capability, DC, Upward)
    LS Type: Summary Links(Network)
    Link State ID: 192.168.1.0 (summary Network Number)
    Advertising Router: 2.2.2.2
    LS Seq Number: 8000000B
    Checksum: 0xE0D5
    Length: 28
    Network Mask: /24
    TOS: 0 Metric: 10

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