Lecture 6

Question 1

What was the precursor to EIGRP?

Answer 1

IGRP

Question 2

Why was IGRP invented?

Answer 2

Developed to over RIPv1 maximum hop count of 15.

Question 3

What are the metrics used by IGRP?

Answer 3

Bandwidth (used by default)
Delay (used by default)
Reliability
Load

Question 4

What does the EIGRP packet header contain?

Answer 4

It contains the AS number

Opcode Field

Question 5

What does AS number stand for?

Answer 5

Autonomous System number

Question 6

What does TLV stand for?

Answer 6

Type, Length, Value

Question 7

What does TLV: IP Internal contain?

Answer 7

Metric Field
Subnet Mask Field
Destination Field

Question 8

What does EIGRP use to route several different network layer protocols?

Answer 8

PDM is used to route different network layer protocols like IP, IPX & AppleTalk.

Question 9

What are PDMs responsible for?

Answer 9

The routing task for each network layer protocol.

Question 10

What does EIGRP use to transmit and receive EIGRP packets?

Answer 10

Reliable Transport Protocol is used to transmit EIGRP packets.

Question 11

What are the charateristics of RTP?

Answer 11

RTP involves both reliable & unreliable delivery of EIGRP packet.

Reliable delivery requires the acknowledgement from the destination device.

Unreliable delivery does not.

Question 12

How can packets be sent using RTP?

Answer 12

Unicast
Multicast

Multicast uses address 224.0.0.10

Question 13

What are the 5 types of packets used in EIGRP?

Answer 13

Hello (used to discover and form adjacencies with neighbors).

Update (used to propagate routing information)

Acknowledgement (Used to acknowledge receipt of update, query & reply packets)

Query (used by DUAL for searching for networks - can be used on unicast and multicast).

Reply (reply packet - unicast).