1. Configuring Network Devices
Working at a Small-to-Medium Business or ISP – Chapter 5

2. Objectives Configure a router with an initial configuration.
Use Cisco SDM to configure a Cisco ISR with LAN connectivity, Internet connectivity and NAT.
Configure a Cisco router for LAN connectivity, Internet connectivity and NAT using the Cisco IOS CLI.
Configure a WAN connection from customer premises to an ISP.
Describe, setup and configure a standalone LAN switch.

3. Initial ISR Router Configuration
ISR combines routing, LAN switching, security, voice, and WAN connectivity features

4. Initial ISR Router Configuration
Cisco IOS software modules are called images
IP Base image: entry-level Cisco IOS
Images are specific to models of devices

5. Initial ISR Router Configuration
Tools and equipment required for setup:

6. Initial ISR Router Configuration
Three-stage bootup process:
Power-on self test (POST)
Locate and load Cisco IOS
Locate startup configuration file or enter setup mode

7. Initial ISR Router Configuration
Verifying and troubleshooting bootup process:
View output from the show version command
Use dir flash: and boot flash: in ROMmon mode
View boot system commands

8. Initial ISR Router Configuration
Out-of-band management for initial configuration
In-band management over a network connection

9. Initial ISR Router Configuration
Command Line Interface (CLI): text-based program
Security Device Manager (SDM): web-based GUI

10. Using Cisco SDM Express and SDM
Follow best practices for installing a new device to ensure correct functions

11. Using Cisco SDM Express and SDM
Eight SDM Express configuration screens:
Overview
Basic configuration
LAN IP address
DHCP
Internet (WAN)
Firewall
Security settings
Summary

12. Using Cisco SDM Express and SDM
Use Basic NAT Wizard to configure dynamic NAT with PAT

13. Configuring a Router Using IOS CLI
CLI command modes: two levels of access

14. Configuring a Router Using IOS CLI
Configuration modes can alter the operation of the device

15. Configuring a Router Using IOS CLI
Help features:
Command completion
Error indicators
Command history
Arrow and function keys

16. Configuring a Router Using IOS CLI
Show commands display configuration and operation information

17. Configuring a Router Using IOS CLI
Use Cisco IOS CLI to perform an initial router configuration

18. Configuring a Router Using IOS CLI
Configure serial and Ethernet interfaces on a router

19. Configuring a Router Using IOS CLI
Configure a default route for the Cisco router

20. Configuring a Router Using IOS CLI
Configure a Cisco router to function as a DHCP server

21. Configuring a Router Using IOS CLI
Configure static NAT on a Cisco router to enable Internet access for an internal server

22. Configuring a Router Using IOS CLI
Back up and restore configuration files using a TFTP server

23. Configuring a Router Using IOS CLI
Capture and save configuration file output from a terminal session

24. Connecting the CPE to the ISP
Configuration checklists ensure that all configuration requirements are met

25. Connecting the CPE to the ISP
Use inventory and configuration checklists and an installation plan to ensure successful installation

26. Connecting the CPE to the ISP
Documentation includes diagrams, checklists, and activity logs

27. Connecting the CPE to the ISP
Types of customer connections over a WAN:
Point-to-point
Circuit-switched
Packet-switched

28. Connecting the CPE to the ISP
Bandwidth and cost influence WAN choices

29. Connecting the CPE to the ISP
Clock rate and serial encapsulation are needed when configuring serial WAN connections

30. Initial Cisco 2960 Switch Configuration
Fixed-configuration, standalone devices
Configured using GUI or CLI

31. Initial Cisco 2960 Switch Configuration
Check switch components
Connect cables to the switch
Power up the switch and observe POST

32. Initial Cisco 2960 Switch Configuration
Switch settings can be configured using the Cisco IOS CLI
Assign an IP address to the default management virtual local area network, VLAN1

33. Initial Cisco 2960 Switch Configuration
Connect the stand-alone LAN switch to the router and verify connectivity
Configure port security to prevent unauthorized use
Shut down unused ports

34. Initial Cisco 2960 Switch Configuration
Cisco Discovery Protocol (CDP) gathers information about directly-connected Cisco network devices
Two Cisco devices directly connected on the same local network are called neighbors

35. Summary
The Integrated Services Router (ISR) is a good choice for small to medium businesses and ISP-managed customers.
ISRs can be initially configured using SDM or the router IOS CLI.
When using the CLI, “show” commands verify configuration elements.
An installation plan can minimize disruption to a network when new devices are being added.
Documentation is necessary, both when configuring and when installing network devices.
Switches are assigned IP addresses by configuring them on the management interface, VLAN 1.