4167appB fm Page 1 Monday August 19 2002 9 52 PM Appendix Bonus Chapter Configuring the Catalyst 1900 Switch 4167appB fm Page 2 Monday August 19 2002 9 52 PM T he 1900 switch is a low end model in the Cisco Catalyst switch family There are actually two different models associated with the Catalyst 1900 switch the 1912 and the 1924 The 1912 switches have 12 10BaseT ports and the 1924 switches have 24 10BaseT ports Each has two 100Mbps uplinks either twisted pair or fiber Since the 1900 switch can now run a version of the Cisco IOS you can use it to thoroughly understand switching through all Cisco switching products Not all Cisco switches run a version of the IOS but they will eventually In this appendix you will learn how to start up and configure a Cisco Catalyst 1900 switch using the command line interface CLI I will begin by explaining how to connect a console cable then I will discuss what happens when a 1900 switch is powered up After you learn how to connect a console cable to the switch and get the switch working I will teach you the basic configuration commands that you can use on the 1900 switch After you learn the basic commands I will show you how to configure virtual LANs VLANs on the switch as well as ISL routing and VLAN Trunk Protocol VTP The basic tasks covered in this appendix include the following Setting the passwords Setting the hostname Configuring the IP address and subnet mask Identifying the interfaces Setting a description on the interfaces Defining the port duplex of a port Verifying the configuration Managing the MAC address table 4167appB fm Page 3 Monday August 19 2002 9 52 PM Features of the 1900 Switch Setting permanent and static MAC addresses Configuring port security Describing the show version command Changing the LAN switch type Configuring VLANs Adding VLAN memberships to switch ports Creating a VTP domain Configuring trunking Configuring pruning 3 The end of the appendix includes both written and hands on labs as well as review questions to make sure you have a firm understanding of the 1900 switch configuration Configuring the 1900 switch is not directly covered on the CCNA exam however you will find the material in this appendix useful in your professional life In addition understanding the 1900 will improve your understanding of Cisco technology overall and thus your performance on the exam Features of the 1900 Switch T he Catalyst 1900 switch can now use a command line interface CLI to configure the Cisco Internetworking Operating System IOS on the switch Before the CLI was available the 1900 switch could only be configured through a menu system The CLI makes configuring the switch quite similar to how you would configure a router This book only covers the Catalyst 1900 switch configuration commands There are two types of operating systems that run on Cisco switches IOS based In this system you can configure the switch from a CLI that is similar to Cisco routers Catalyst 1900 2820 and 2900 switches can be used with an IOS based CLI although they can be set with a menu system as well 4167appB fm Page 4 Monday August 19 2002 9 52 PM 4 Appendix Bonus Chapter Configuring the Catalyst 1900 Switch Set based This system uses older CLI configuration commands setbased means you use the set command to configure the switch The Cisco switches that use the set based CLI are the 2926 1948G 4000 5000 and 6000 series The 1900 switch is important because it allows you to run a CLI with IOS based commands on a less expensive switch than the 5000 series The 1900 switches are great for home offices or other small offices where you can get 10Mbps switched ports with 100Mbps uplinks at a decent price The Three Configuration Options The Catalyst switch uses a CLI which is more like the router configuration I showed you in Chapter 4 However you can configure the switch with a webbased method using the Visual Switch Manager VSM To configure the switch through the VSM you just have to type in the IP address of the switch at a web browser You will learn how to add an IP address to the switch later in this appendix The 1900 switches also have the original menu system that allows you to configure the switch through a series of menu based options To configure the switch with Telnet or VSM an IP address must be configured on the switch Connecting to the Console Port The 1900 switch has a console port on the back of the switch just like the 2500 routers I showed you in Chapter 4 It is an RJ 45 port and it uses a rolled cable to connect to a terminal 1924 switches use a null modem cable for the console port At this point you need to start a terminal emulation program like HyperTerminal in Windows The settings for this program are as follows 9600bps 8 data bits Parity none Stop bits 1 Flow control none 4167appB fm Page 5 Monday August 19 2002 9 52 PM Features of the 1900 Switch 5 Do not connect an Ethernet cable ISDN or live telephone line into the console port These can damage the electronics of the switch 1900 Switch Startup Before you power on the switch for the first time check to make sure you have completed the following You have plugged in all the network cables securely You have connected a terminal to the console port You have configured your terminal software correctly Once you have checked everything in this list plug the power cable into the switch and watch the light sequence Then check the output on the console Figure 1 shows the 1900 switch and the light emitting diode LED locations FIGURE 1 Catalyst 1900 switch Catalyst 1900 10BaseT 100BaseTX CISCOSYSTEMS YSTEM RPS 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x 23x 24x Ax Bx STAT UTL FDUP MODE A green system light appears if the switch is operational It will be amber if a system malfunction has occurred The RPS light is on if a redundant power supply is detected in the switch The only button on the 1900 switch is the mode button By pressing the mode button you can see three different status lights on the switch Stat This light shows the status of the ports If it is green this indicates a device is plugged into the switch Green is active and a green blinking light is activity on the port If the port is amber there has been a link fault UTL This light indicates the bandwidth of the switch When you press the mode button on a 1912 switch and the LEDs for ports 1 through 4 come on this means the bandwidth utilization of the switch is somewhere between 0 1 and 1 5Mbps If lights