Tài liệu CIS 185 CCNP ROUTEEIGRP Part 1 pdf

CIS 185 CCNP ROUTE

EIGRP Part 1

Rick Graziani

Cabrillo College

[email protected]

Last Updated: Fall 2012

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EIGRP Part 1

 Review

 Neighbor Adjacencies and

EIGRP Reliability

 EIGRP Metric

 DUAL

 Basic EIGRP Configuration

 Passive-Interfaces

 Summarization

 Default Route

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Materials

 Book:

 Implementing Cisco IP Routing

(ROUTE) Foundation Learning

Guide: Foundation learning for the

ROUTE 642-902 Exam

 By Diane Teare

 Book

 ISBN-10: 1-58705-882-0

 ISBN-13: 978-1-58705-882-0

 eBook

 ISBN-10: 0-13-255033-4

 ISBN-13: 978-0-13-255033-8

Review

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What do we remember about EIGRP?

 What type of protocol is EIGRP?

 Distance Vector

 What are the default metrics used by

EIGRP?

 Bandwidth (slowest) and Delay (cumulative)

 What are the optional metrics?

 Reliability and Load

 Note: Book also state MTU but it is not a metric.

 What algorithm is used to determine best

path?

 DUAL (Diffusing Update Algorithm)

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Review of EIGRP from CCNA

 Enhanced Interior Gateway Routing Protocol (EIGRP)

 Released in 1992 with Cisco IOS Software Release 9.21.

 Enhancement of Cisco’s:

 Interior Gateway Routing Protocol (IGRP).

 Both are Cisco proprietary, operate only on:

 Cisco routers

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RTP and EIGRP

Packet Types

 What transport layer protocol does EIGRP use?

 Reliable Transport Protocol (RTP)

 Why doesn’t EIGRP use UDP or TCP?

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Protocol￾Dependent

Modules

 EIGRP uses protocol-dependent modules (PDM). to route

different protocols, including:

 IPv4

 IPv6

 Internetwork Packet Exchange (IPX)

 AppleTalk

EIGRP Packet

Frame Header

Frame Payload

CRC IP

Header

Protocol Number

(EIGRP = 88)

EIGRP

Header

EIGRP

Message

On a LAN, the EIGRP

packet is encapsulated

in an Ethernet frame

with a destination

multicast MAC address:

01-00-5E-00-00-0A

The destination IP address is

set to the multicast 224.0.0.10

and the EIGRP protocol field

is 88.

The EIGRP

header identifies

the type of EIGRP

packet and

autonomous

system number.

The EIGRP

message

consists of

the Type /

Length /

Value (TLV).

EIGRP Header

EIGRP Packet