Options

LSA Options explained?

FrankGuthrieFrankGuthrie Member Posts: 245
in CCNP
When looking thorugh the OSPF database I see a line/field with the following description Options: (No TOS-capability, DC)



What does this means? What options can you change and what do they do?
· Share on FacebookShare on Twitter

Comments

  • Options
    EdTheLadEdTheLad Member Posts: 2,111 ■■■■□□□□□□
    Read the OSPF rfc to learn about options. "No TOS-capability" means ospf will have one routing table rather than one rib for each TOS value, afaik Cisco only supports "No TOS-capability" . The DC means the router originating the LSA supports demand circuits, a demand circuit will suppress lsa hello's and route refresh, a virtual-link is an example of a demand circuit.
    Networking, sometimes i love it, mostly i hate it.Its all about the $$$$
    · Share on FacebookShare on Twitter
  • Options
    FrankGuthrieFrankGuthrie Member Posts: 245
    Hi Ed, But don't you need hello's to create a neighbour relationship?


    Does this mean that it does send hello's to set up the initial OPSF neighbour relationship, but not after the relationship has been established?
    · Share on FacebookShare on Twitter
  • Options
    powmiapowmia Users Awaiting Email Confirmation Posts: 322
    Does this mean that it does send hello's to set up the initial OPSF neighbour relationship, but not after the relationship has been established?

    ......yes
    · Share on FacebookShare on Twitter
  • Options
    FrankGuthrieFrankGuthrie Member Posts: 245
    ....thanks
    · Share on FacebookShare on Twitter
Sign In or Register to comment.