© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.1 Configuring Network Devices Working at a Small-to-Medium Business or ISP – Chapter 5

2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial ISR Router Configuration  ISR combines routing, LAN switching, security, voice, and WAN connectivity features

4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial ISR Router Configuration  Tools and equipment required for setup:

6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial ISR Router Configuration  Out-of-band management for initial configuration  In-band management over a network connection

9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial ISR Router Configuration  Command Line Interface (CLI): text-based program  Security Device Manager (SDM): web-based GUI

10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Using Cisco SDM Express and SDM  Follow best practices for installing a new device to ensure correct functions

11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Using Cisco SDM Express and SDM  Use Basic NAT Wizard to configure dynamic NAT with PAT

13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  CLI command modes: two levels of access

14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Configuration modes can alter the operation of the device

15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI Help features:  Command completion  Error indicators  Command history  Arrow and function keys

16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Show commands display configuration and operation information

17 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Use Cisco IOS CLI to perform an initial router configuration

18 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Configure serial and Ethernet interfaces on a router

19 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Configure a default route for the Cisco router

20 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Configure a Cisco router to function as a DHCP server

21 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Configure static NAT on a Cisco router to enable Internet access for an internal server

22 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Back up and restore configuration files using a TFTP server

23 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Configuring a Router Using IOS CLI  Capture and save configuration file output from a terminal session

24 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP  Configuration checklists ensure that all configuration requirements are met

25 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP  Use inventory and configuration checklists and an installation plan to ensure successful installation

26 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP  Documentation includes diagrams, checklists, and activity logs

27 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP Types of customer connections over a WAN:  Point-to-point  Circuit-switched  Packet-switched

28 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP  Bandwidth and cost influence WAN choices

29 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Connecting the CPE to the ISP  Clock rate and serial encapsulation are needed when configuring serial WAN connections

30 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial Cisco 2960 Switch Configuration  Fixed-configuration, standalone devices  Configured using GUI or CLI

31 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Initial Cisco 2960 Switch Configuration  Check switch components  Connect cables to the switch  Power up the switch and observe POST

32 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 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.

36 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public