3-7: EIGRP Flashcards Preview

CISA-1220 Routing > 3-7: EIGRP > Flashcards

Flashcards in 3-7: EIGRP Deck (50):
1

In 1985 Cisco developed what to overcome the limitations of RIP?

IGRP

1

Query Packets are used when in EIGRP?

Used by DUAL when searching for networks

1

In EIGRP, what is the best route to the destination?

The Successor

1

What two objects are in the EIGRP Topology Table?

All successors and all feasible successors

1

True / False: EIGRP must receive a response when querying other routers after a route goes down?

True. If no response is received, it may get "SIA" (Stuck in Active) mode

1

The Administrative Distance for an EIGRP External route is?

170

2

True / False: EIGRP does not support unequal cost load balancing?

False, EIGRP supports Equal and Unequal Cost Load Balancing

3

For the EIGRP Neighbor Adjacency to be established, what needs to match?

Networks, the AS number, and metrics

4

In EIGRP, what is the lowest metric to the destination?

The Feasible Distance

4

Which table is used by EIGRP to store all routes that are learned from EIGRP neighbors?

The topology table

5

In EIGRP, what is a neighbor with a loop-free BU route that satisfies the Feasibility Condition?

The Feasible Successor

6

In EIGRP, when is the Feasibility Condition met?

Wwhen a neighbors RD is less than the local routers FD to the same destination network

7

How do EIGRP routers establish and maintain neighbor relationships?

By exchanging hello packets with neighboring routers

8

The Administrative Distance for an EIGRP Summary route is?

5

9

In EIGRP, when DUAL is finished routes are stable and?

Passive

10

Which command is used to display the bandwidth of an interface on an EIGRP-enabled router?

show interfaces

11

What algorithm does EIGRP use?

DUAL

13

The data portion of EIGRP message is called?

Type/Length/Value (TLV)

14

Which EIGRP route would have the preferred administrative distance?

A summary route

15

EIGRP ______ ________ carry route info, only as necessary

Update Packets

16

What is indicated when an EIGRP route is in the passive state?

The route is viable and can be used to forward traffic.

17

True / False: EIGRP packets are use reliable delivery?

False

19

The Finite State Machine is?

An abstract machine that defines states, events that cause states & what events result from states

21

True / False: EIGRP supports authenticated routing updates much like OSPF and RIP?

True

21

EIGRP does not have a Dead-Timer, instead they have?

Hold-Timer

22

In EIGRP, what describes how an algorithm will react to events?

The Finite State Machine

22

In EIGRP, ff DUAL is recalculating/searching routes are?

Active

24

What is an EIGRP Split Horizon?

Routes learned on an interface are not advertised out that interface are not advertised out that interface

27

The EIGRP packet header contains what number?

The AS number

27

What is the purpose of using protocol-dependent modules in EIGRP?

To accommodate routing of different network layer protocols

28

EIGRP Hello Packets multicast to what IPv6 address?

FF02::A

29

EIGRP is what type of Routing Protocol (Link-State | Distance Vector)

Distance Vector

30

True / False: Some IOS versions allow you to use netmasks rather than wildcard masks with the EIGRP network command?

True.

31

Acknowledgement Packets use unreliable or reliable delivery?

Reliable

33

The Administrative Distance for an EIGRP Internal route is?

90

34

What command enables EIGRP on a router?

router eigrp

35

In 1992 Cisco took redeveloped IGRP and changed it to what?

Enhanced IGRP

36

EIGRP uses what to route different protocols?

Protocol Dependent Modules

37

What argument can be added to the show ip eigrp topology to show routes that are not feasible?

all-links

39

The default Hello-Interval for multiaccess networks is?

Every 5 seconds

40

RTP involves both Reliable and Unreliable delivery, what is the major difference between the two?

Reliable delivery requires ACK from destination

41

The default Hello-Interval for NMBA networks is?

Every 60 seconds

41

Where are EIGRP successor routes stored?

In the routing table and the topology table

42

EIGRP Routing Table only contains what?

Successors

44

What interval is the EIGRP Hold-Timer set to?

3x Hello Interval

46

True / False: Like OSPF, the Autonomous System (AS) number does not need to match for each router?

False - in EIGRP they all must match

47

What does EIGRP use for router packet delivery?

Reliable Transport Protocol.

48

EIGRP Hello Packets multicast to what IPv4 address?

224.0.0.10

49

What protocol number does Reliable Transport Protocol use?

88

50

In EIGRP, what is the neighbours Feasible Distance to that destination?

Reported Distance