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Step 4: Configure a Catalyst Switch with Cisco Network Assistant
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Introduction
This document explains how to use the Cisco Network Assistant (CNA)
software to configure a Catalyst switch for the first time. This procedure
applies to 2900XL, 2940, 2950, 2960, 2970, 3500XL, 3550, 3560, and 3750 model
Catalyst switches.
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Requirements
To perform the steps described in this document, you need to have these
items:
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Connect to the Switch
Follow these steps to connect your PC to the switch for
configuration:
Change the IP Address on the PC
Your PC must have a compatible IP address in order to communicate with
the switch. Before you change your TCP/IP settings, make note of your current
settings.
To configure the IP address on your PC, go to the Start >
Settings > Control Panel > Network and Dialup Connections.
Right-click on your network connection icon and choose
Properties. Select Internet Protocol (TCP/IP)
and click Properties. Enter the IP address
10.0.0.2 with a subnet mask of 255.255.255.0.
For more detailed instructions, refer to
Configure
an IP Address on Your PC.
Put the Switch in Setup Mode
Follow these steps to put the switch in setup mode:
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Press and hold the Mode button for approximately 2 seconds, or
until all LEDs next to the Mode button except for the RPS LED turn green. On
the 2940 switch, hold the Mode button until all of the LEDs above the Mode
button turn green. On the 2960 switch, hold the Mode button until the all of
the LEDs except the RPS and SPEED turn green.
Note: The model illustrated is a Catalyst 2950. Your switch may look
slightly different.
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When all LEDs except the RPS LED turn green, release the Mode
button. All LEDs except the RPS LED should remain green. On the 2940 switch,
all of the LEDs remain green. On the 2960 switch, all of the LEDs except the
RPS and SPEED remain green.
If the LEDs begin to blink after you have held the Mode button for
2 seconds or you cannot get the required LEDs to remain lit, then the switch
has an existing configuration and cannot enter setup mode. Refer to
Troubleshoot the Procedure for
assistance.
Connect the PC to the Switch
Follow these steps to connect your PC to the switch:
Note: For configuration, the switch must be connected only to the PC.
Verify that no other devices are connected to the switch.
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Connect one end of a straight-through Ethernet cable to Ethernet
port 20 on the front panel of the switch. If you have a 2940 switch, connect
one end of a straight-through Ethernet cable to any Ethernet port on the front
panel of the switch.
Note: Port 1 is typically the management port, but for VLAN
configuration you cannot use port 1 as the management port for setup.
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Connect the other end of the Ethernet cable to the Ethernet port on
your PC.
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Verify that the port status LEDs turn green on both connected
Ethernet ports.
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Configure the Switch
Follow these steps to configure VLANs on the switch with CNA:
Connect to the Switch with CNA
Follow these steps to log in to the switch with CNA:
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To launch CNA, go to Start > Programs > Cisco Network
Assistant > Cisco Network Assistant.
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When the Connect window opens, type 10.0.0.1 in
the Connect To field, and then click
Connect.
Note: If you are unable to connect to the switch with CNA, see
Troubleshoot the Procedure for help.
Create a VLAN
CNA operates in two modes: Expert View and Guide View. The default view
for CNA 3.0 is Expert View. To ensure that you are in Expert View, click the
Expert button on the far right of the toolbar.
Follow these steps to create a VLAN on the switch:
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On the Features tab, click Configure > Switching >
VLANs.
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In the VLANs window, click the Configure VLANs
tab.
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Click Create to open the Create VLAN
window.
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Enter the VLAN information for the new VLAN.
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In the VLAN ID field, enter
20.
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In the VLAN Name field, enter
Default.
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Leave the VLAN Status field set as Active.
Click OK.
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When you are finished, the two VLANs appear in the VLANs window.
Click Apply, and then click OK.
Configure VTP Server
Follow these steps to configure the VLAN trunking protocol (VTP)
server:
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On the Features tab, click Configure > Switching >
VLANs.
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In the VLANs window, click the Configure VTP
tab.
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Enter the VTP information for the new VLANs.
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For V2 VTP Mode, select
Enabled.
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For VTP Mode Control, select
Server.
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For VTP Pruning Mode, select
Disabled.
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For Domain Name, type SMB.
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For VTP Password, type the enable password of the router that you
entered in field B12 on the Internet worksheet.
Click OK to save the VTP information.
Configure the Host Name
The host name identifies the switch. Follow these steps to configure or
change the host name on the switch:
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On the Features tab, click Configure > Device Properties
> Hostname.
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Since this is the root switch, type rootsw in the
New Hostname field.
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Click OK.
Configure Passwords
Follow these steps to create or change passwords on the switch:
Note: Refer to
Password
Security for guidelines on how to create secure passwords.
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On the Features tab, click Configure > Device Properties
> Users and Passwords.
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In the Users and Passwords window, click the Local
Username/Password tab.
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Click Create.
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Enter the administrative user name and password information:
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In the Username field, enter
admin.
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In the password fields, enter the password, and then enter the
password again to confirm. Use the admin password that you entered in field S5
of the Switch Port Assignments worksheet.
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Use the Privilege Level drop-down list to set the access level to
15. This level has read-write access; all user levels under 15
have read-only access.
Click OK.
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Click Apply. The user information appears in the
Username list.
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Click the HTTP Authentication tab.
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Click the Local Username/Password radio button,
and then click Apply.
Note: When you receive an alert message that you have changed your
authentication values, click Yes to continue. You do not need
to relaunch CNA.
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Click the Enable Password
tab.
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Click Create.
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In the password fields, enter the enable password, and then enter
the password again to confirm. Click OK. Use the enable
password that you entered in field S5 of the Switch Port Assignments
worksheet.
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Click the Console/Telnet Password
tab.
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Under Console and Telnet, type the admin password that you entered
in field S5 of the Switch Port Assignments worksheet.
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Click Apply in the Users and Passwords window.
When you receive an alert message that you have changed your authentication
values, click Yes to continue. Then click
OK.
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After you change the system passswords, CNA may prompt you to log
in again. If the Network Authentication window appears, log in to CNA with the
admin username and password that you entered in fields S5 of the Switch Port
Assignments worksheet. Click OK.
Note: The login prompt may not appear until you perform another action
in CNA.
Set the System Time
Follow these steps to configure the clock time zone and the Network
Time Protocol (NTP) server:
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On the Features tab, click Configure > Device Properties
> System Time.
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In the System Time window, use the Time Zone drop-down list to
select the correct time zone for your location. Use the system time that you
entered in field B13 in the Internet worksheet.
Note: You do not need to manually enter the current time because the
switch uses the router as a time server.
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Click Advanced.
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In the Server field, enter the IP address of the router that you
entered in field L6A of the LAN Addressing Worksheet, and click
OK.
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Click OK in the System Time
window.
Configure the IP Address
Configure VLAN 20 with the IP address that you entered in field L8 of
the LAN Addressing Worksheet.
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On the Features tab, click Configure > Device Properties
> IP Addresses.
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On the Interface Configuration tab, enter the IP address
information.
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Click the IP Address field for VLAN 20, and then enter the IP
address of the root switch that you entered in field L8 of the LAN Addressing
Worksheet.
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Click the Subnet Mask field, and then select
255.255.255.0 from the drop-down
list.
Click Apply.
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Click the Device Configuration
tab.
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Enter the default gateway information for the switch.
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In the Default Gateway field, enter the IP address for the router
that you entered in field L6A of the LAN Addressing
Worksheet.
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In the Domain Name field, enter the domain name for the device
that you entered in field B48 of Internet Worksheet.
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Uncheck the Enable Domain Lookup check
box.
Click OK.
Configure Port Assignments
Follow these steps to configure switch ports with Smartports.
Smartports is a feature that helps you apply consistent configurations to ports
based on roles that you assign to each port. CNA then applies appropriate port
settings for the connection type.
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On the Features tab, click Configure >
Smartports. A window displays with a graphic illustration of the
switch.
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Click port 1 to select the port, and then click
Modify.
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In the Modify Port Roles window, configure the port role and
attributes.
Click OK.
The port is assigned with the desktop macro, which appears on the
switch illustration.
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Configure ports 2 through 9 with these assignments:
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For port 2 (for use by a router), set the port role to Router and
Native VLAN to Default (20).
Note: When you receive a warning message that you are about to change
a port role, click Yes to continue.
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Port 3 is reserved for future use.
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For port 4 (for use by PIX internal), set the port role to
Desktop and Access VLAN to Default (20).
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For port 5 (for use by a wireless access point) and ports 6
through 9 (for use by switches), set the port role to Switch and Native VLAN to
Default (20). To configure these ports at one time, press Ctrl
on your keyboard while you click each port in the CNA window.
Note: When you receive a warning message that you are about to change
a port role, click Yes to continue.
Click OK. When you receive a warning message that
modified ports will be set to factory default, click Yes to
continue.
Save Your Configuration
Follow these steps to save your configuration.
Note: When you save your configuration, CNA disconnects from the switch.
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On the Features tab, click Configure > Save
Configuration.
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In the Save Configuration window, use the Hostname drop-down list
to select rootsw.
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Click Save. This causes the switch to exit setup
mode and disconnect from your PC. All LEDs on the switch shut off except the
SYS and STAT LEDs, which remain green.
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Close the CNA application.
Reconnect to the Switch
Follow these steps to reconnect to the switch on a different
port:
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Unplug the Ethernet cable from port 20, and then insert the cable
into port 1.
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Change the TCP/IP setting on your PC to match the switch (for
example, 192.168.10.50). Right-click on the network connection icon in your
system tray and open the network connections window. Right-click on the
Local Area Connection icon and choose
Properties. Select Internet Protocol
(TCP/IP), click Properties, and then enter the new IP
address.
Note: You may need to restart your computer after you change the IP
address.
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Launch CNA. When the Connect window appears, enter the switch IP
address from field L8 on the LAN Addressing Worksheet (for example,
192.168.10.2), and then click Connect.
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When the Network Authentication window appears, log into the switch
with the admin user ID and password.
Configure the Remaining Ports
Follow these steps to configure the rest of the ports on the
switch.
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On the Features tab, click Configure >
Smartports. A window displays with a graphic illustration of the
switch.
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Drag the mouse cursor over ports 10 through 24 (or 48) to highlight
the ports with a yellow outline.
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Click Modify.
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In the Modify Port Roles window, configure the port type and
attributes.
Click OK.
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Click OK in the Smartports Setup window. The
remaining ports are now configured.
Save Your Configuration
Follow these steps to save your configuration.
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On the Features tab, click Configure > Save
Configuration.
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In the Save Configuration window, use the Hostname drop-down list
to select rootsw.
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Click Save. You can now close the CNA
application.
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To disconnect your PC from the switch, remove the Ethernet cable
from the ports on the PC and the switch. You may need to restore the TCP/IP
settings on your PC to the original values. Refer to
Configure
an IP Address on Your PC for instructions.
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Connect the Switch to Your Network
Identify the cables that you need to connect the switch to your
network. If you are not sure how to identify the types of Ethernet cables,
refer to
Cable
Descriptions.
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To connect your switch to a server, workstation, or router, use a
straight-through Ethernet cable.
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To connect your switch to a repeater or another switch, use a
crossover Ethernet cable.
Connect devices to the switch according to the Switch Port Assignments
Worksheet. The general assignments are shown in this table.
Port
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Device
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Port 1
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Workstation
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Port 2
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Router
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Port 3
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Reserved for future use
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Port 4
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PIX
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Port 5
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Access Point
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Ports 6 though 9
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Additional switches
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Ports 10 through 24 or 48
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Additional devices
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Follow these steps to connect devices to your switch:
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Connect one end of an Ethernet cable to a port on your
switch.
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Insert the other end of the Ethernet cable into a port on the
target device (server, workstation, router, switch, etc.).
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Wait for approximately 30 seconds, and then verify that the port
status LED on the switch turns green. If the LED is off and does not turn
green, see Troubleshoot the Procedure for
help.
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Next Step
You have completed configuration of your Catalyst switch.
If want to add additional switches, refer to
Add a New
Ethernet Switch.
To make other changes to your switch, refer to the
Switch
Support Page.
To configure other devices in your network, refer to the
Configuration
Overview Page.
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Troubleshoot the Procedure
This section provides information about common problems that you may
encounter. If this information does not solve your problem, contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
Problem
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Cause(s) and Suggested Solution(s)
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You are unable to put the switch into setup mode because the
four Mode LEDs begin to blink after you have held the Mode button for two
seconds or you cannot get the four LEDs to remain lit.
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The switch has an existing configuration on it. To clear the
current configuration from the switch, follow these steps:
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Press and hold the Mode button. The switch LEDs will begin to
blink after about two seconds.
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Continue to hold the Mode button for approximately eight more
seconds, or until the LEDs stop blinking.
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Release the Mode button. The switch will then
reboot.
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Wait 1 minute for the power-on self test (POST) to complete
successfully. When POST is complete the SYST and STAT LEDs will display
green.
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Press and hold the Mode button for approximately two seconds,
or until all LEDs next to the Mode button except for the
RPS LED turn green.
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You connected a PC directly to the switch, but you are unable
to establish a connection with CNA.
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Ensure that the power-on self test (POST) completed
successfully. The SYST and STAT LEDs must be green.
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After you connect the switch to the PC, you must wait 30
seconds before you can try to connect. Wait 30 seconds, and then try to connect
again.
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Verify the IP Address on your PC is 10.0.0.2.
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Ensure that you typed the correct IP address in the Connect
window. Retype 10.0.0.1, and then click
Connect.
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Ensure that you used the proper cable. You must use a
straight-through cable, not a crossover cable. Refer to
Cable
Descriptions for more information.
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You connected the switch to your network, but you are unable to
establish a remote connection with CNA.
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Ensure that you typed the correct IP address in the Connect
window. Retype the IP address that you assigned to the switch, and then click
Connect.
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Ensure that you used the proper cable. To connect your switch
to a server, workstation, or router, use a straight-through Ethernet cable. To
connect your switch to a repeater or another switch, use a crossover Ethernet
cable. Refer to
Cable
Descriptions for more information.
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Ensure that the switch is connected to a subnet that matches
the IP address you assigned.
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You connected the switch to another device on your network, but
the port status LED is off.
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Ensure that the target device is powered
on.
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Ensure that you have used the correct cable to connect to the
target device. Refer to
Cable
Descriptions for more information.
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Ensure that the port adapter on the target device is
operating properly.
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Related Information
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