OSPF handout quiz Flashcards Preview

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Flashcards in OSPF handout quiz Deck (22):
1

what is Adjacency Database?

neighbor table

2

LSDB... Link State Database?

topology table

3

forwarding database?

routing table

4

what command is used to see the neighbor table (adjacency database?)

show ip ospf neighbor. table shows a routers connections have been made between this router and neighbor routers.

5

what command is used to see the LSDB table?

show ip ospf database
-shows the link state database table. represents the network topology.

6

what command is used to see the forwarding database ?

show ip route
-unique on all routers, used to show where to send packets to other routers.

7

how are neighbor ejacancies made?

hello packets are sent out all interfaces that are ospf enabled. used to establish/ attempt to establish adjacencies with neighbors.

8

what are LSA?

link state advertisements: after neighbor adjacency is established- LSA send out cost and state of each connected link. used to tell all other routers.

9

what is LSDB?

link state database: based on the link state advertisements received this is used to build the topology of the network.

10

what are the 5 types of OSPF packets?

hello packet, database description packet, link site request packet, link state update packet and link state acknowledgement packet

11

hello packet?

discovers neighbors and builds adjacency with them.

12

command 'database description' does what?

check for database synchronization between routers

13

link-state request

requests specific link state records from router to router

14

link state update?

sends requested link state records

15

link state acknowledgement

acknowledges other packet types.

16

what addresses are used to send multiaccess hello packets to ospf routers?

ipv4 = 224.0..0.5
ipv6= FF02::5

17

DBD?

database description

18

ipv6 network address is referred to as the?

the prefix

19

ipv6 subnet mask is referred to as the?

the prefix-length

20

serial links, fao or ga0/ links are they broadcast links?

serial links are not broadcast links but the others are

21

what command is used to reset the device id when u change it or set it for the 1st time?

clear ip ospf process

22

what command on a router is used to show that the layer 3 connectivity is working correctly?

show ip interface brief

-displays the interfaces that are up and ones that are down