Chapter 5 WANs and Routers Introduction to Routers

Chapter 5 WANs and Routers/ Introduction to Routers © 2004, Cisco Systems, Inc. All rights reserved. 1

Objectives © 2004, Cisco Systems, Inc. All rights reserved. 2

Introduction to WANs • A WAN is a data communications network that spans a large geographic area such as a state, province, or country. © 2004, Cisco Systems, Inc. All rights reserved. 3

WAN Devices © 2004, Cisco Systems, Inc. All rights reserved. 4

WAN Services © 2004, Cisco Systems, Inc. All rights reserved. 5

Data Link Encapsulations © 2004, Cisco Systems, Inc. All rights reserved. 6

Internal Configuration Components © 2004, Cisco Systems, Inc. All rights reserved. 7

Routers Connected by WAN Technologies © 2004, Cisco Systems, Inc. All rights reserved. 8

Path Determination © 2004, Cisco Systems, Inc. All rights reserved. 9

Internetwork Routers • Any internetwork must include the following: Consistent end-to-end addressing Addresses that represent network topologies Best path selection Dynamic or static routing Switching © 2004, Cisco Systems, Inc. All rights reserved. 10

Academy Approach to Labs • In the academy lab, all the networks will be connected with serial or Ethernet cables and the students can see and physically touch all the equipment. • Devices that make up the WAN cloud are simulated by the connection between the back-to-back DTE-DCE cables. © 2004, Cisco Systems, Inc. All rights reserved. 11

Router Internal Components © 2004, Cisco Systems, Inc. All rights reserved. 12

Router Internal Components © 2004, Cisco Systems, Inc. All rights reserved. 13

Internal Components of a 2600 Router © 2004, Cisco Systems, Inc. All rights reserved. 14

External Connections on a 2600 Router © 2004, Cisco Systems, Inc. All rights reserved. 15

Router External Connections © 2004, Cisco Systems, Inc. All rights reserved. 16

Computer or Terminal Console Connection © 2004, Cisco Systems, Inc. All rights reserved. 17

Modem Connection to Console or Auxiliary Port © 2004, Cisco Systems, Inc. All rights reserved. 18

Console Port Connections 1. Configure terminal emulation software on the PC for the following: The appropriate com port 9600 baud 8 data bits No parity 1 stop bit No flow control 2. Connect a rollover cable to the router console port (RJ-45 connector). 3. Connect the other end of the rollover cable to the RJ-45 to DB-9 adapter 4. Attach the female DB-9 adapter to a PC. © 2004, Cisco Systems, Inc. All rights reserved. 19

Eight-Pin Connections for Cisco 2600 Series Routers © 2004, Cisco Systems, Inc. All rights reserved. 20

WAN Types © 2004, Cisco Systems, Inc. All rights reserved. 21

Router Serial WAN Connectors © 2004, Cisco Systems, Inc. All rights reserved. 22

DCE Serial Connections © 2004, Cisco Systems, Inc. All rights reserved. 23

Summary © 2004, Cisco Systems, Inc. All rights reserved. 24

Introduction to Routers © 2004, Cisco Systems, Inc. All rights reserved. 25

Objectives © 2004, Cisco Systems, Inc. All rights reserved. 26

The Purpose of Cisco IOS Software • Basic routing and switching functions • Reliable and secure access to networked resources • Network scalability © 2004, Cisco Systems, Inc. All rights reserved. 27

Router User Interface © 2004, Cisco Systems, Inc. All rights reserved. 28

Router User Interface Modes © 2004, Cisco Systems, Inc. All rights reserved. 29

Cisco IOS Naming Conventions © 2004, Cisco Systems, Inc. All rights reserved. 30

Operating Cisco IOS Software © 2004, Cisco Systems, Inc. All rights reserved. 31

Steps in Router Initialization © 2004, Cisco Systems, Inc. All rights reserved. 32

Setup Mode © 2004, Cisco Systems, Inc. All rights reserved. 33

Router LED Indicators Cisco routers use LED indicators to provide status information. LED indicators will vary for different Cisco router models. © 2004, Cisco Systems, Inc. All rights reserved. 34

The Initial Router Bootup © 2004, Cisco Systems, Inc. All rights reserved. 35

Examining the Initial Bootup Output © 2004, Cisco Systems, Inc. All rights reserved. 36

Examining the Initial Bootup Output continued © 2004, Cisco Systems, Inc. All rights reserved. 37

Establish a Console Session • All Cisco routers include an EIA/TIA-232 asynchronous serial console port. The console port is an RJ 45. • Use an RJ-45 to RJ 45 rollover cable with a female RJ-45 to DB-9 adapter to connect a PC to the console port © 2004, Cisco Systems, Inc. All rights reserved. 38

Router Modes © 2004, Cisco Systems, Inc. All rights reserved. 39

User Mode Commands © 2004, Cisco Systems, Inc. All rights reserved. 40

Privileged Mode Commands © 2004, Cisco Systems, Inc. All rights reserved. 41

clock set Command © 2004, Cisco Systems, Inc. All rights reserved. 42

Using IOS Command history © 2004, Cisco Systems, Inc. All rights reserved. 43

The User Interface Error Indicator © 2004, Cisco Systems, Inc. All rights reserved. 44

The show version Command © 2004, Cisco Systems, Inc. All rights reserved. 45

Summary © 2004, Cisco Systems, Inc. All rights reserved. 46

Question/Answer © 2004, Cisco Systems, Inc. All rights reserved. 47