OSPF Flashcards Preview

Cisco CCNP Concepts & Theory > OSPF > Flashcards

Flashcards in OSPF Deck (18)
Loading flashcards...
1

What type of advertisements does OSPF send to neighboring routers with link states and link metrics?

Link State Advertisements

2

What database are LSA Link State Advertisements stored on a local router?

LSDB-Links State Database

3

What protocol number does OSPF use over IPv4, which is reserved for OSPF by IANA?

89

4

What is ALLSPFRouters and the multicast address?

224.0.0.5 for ALLSPFRouters (ALL Routers running OSPF)

5

What is ALLDrouters and the multicast address?

224.0.0.6 for ALLDrouters (DR-Designated Routers)

6

What is OSPF hello packets responsible for?

discovering and maintaining neighbors

7

Each process maintains a table for adjacent OSPF neighbors and the state of each router? Yes or no

yes

8

What is the Designated router responsible for?

Flooding updates to all OSPF routers on that segment as updates occur

9

In the event that a DR router fails what takes over?

BDR Backup Designated Router

10

What is the purpose of a passive OSPF interface?

prohibits adjacency's from forming

11

How does a OSPF passive interface prohibit adjacency from forming?

does not send out OSPF hellos and does not process any received OSPF packets

12

Do DROther routers establish full adjacency with other DROther routers routers? yes or no

no

13

What command is used to advertise the default route to an OSPF domain?

default-information originate

14

When you set an interface priority to 0, what occurs?

removes the DR/BDR election immediately

15

What is a NBMA Non-broadcast multiple-access network?

physical link that doesn't support sending the same packet to more than one destination and same physical link is used to communicate with more than one destination

16

What is a OSPF P2P network type?

Point to Point connection
ex. serial connection

17

Does an OSPF P2P network type use a DR? yes or no

no, because it point to point connection

18

What is OSPF SPT?

OSPF router builds a Shortest Path Tree where router is the root and destination networks are the leaves