LSA Options explained?

FrankGuthrieFrankGuthrie Posts: 245Member
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?

Comments

  • EdTheLadEdTheLad Posts: 2,112Member ■■■■□□□□□□
    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 $$$$
  • FrankGuthrieFrankGuthrie Posts: 245Member
    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?
  • powmiapowmia Posts: 322Users Awaiting Email Confirmation
    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
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