On demand routing (ODR)

1. Must turn on CDP for all routers; hence this routing protocol is Cisco proprietary. 2. Only works in hub and spoke topology. 3. Has a default administrative distance of 160. 4. Extremely easy to configure. 5. Makes default route easier to configure for every spoke to hub communication. The hub router actually advertises default … Continue reading On demand routing (ODR)

Type 10 LSA – Opaque LSA

This LSA is an extension of OSPF. The extension is for doing OSPF traffic engineering. MAX-LSA - Protects against adjacent router's excessive LSA in the OSPF domain. Excessive LSA will cost router's high cpu resources. This is to limit the LSA that is not generated by the router itself. CAUTION: Router adjacency will be affected … Continue reading Type 10 LSA – Opaque LSA

LSA types

1. Router LSA - This LSA is produced by every router. The LSA contains information of the router's connected interfaces, states, neighbour router type, any known ospf routers connected to the router's link and outgoing cost of each link. This LSA floods within its own area (intra-area flooding), hence this LSA describes intra-area route. 2. … Continue reading LSA types