Cisco 1503 Instructions de montage

CHAPTER

Using Your Hub Software 3-1

Using Your Hub Software

This chapter describes procedures for configuring the Cisco Micro Hub, and contains the

following sections:

•Preparing for Configuration

•Configuring the Hub

•Command Summary

Preparing for Configuration

To configure any Cisco Micro Hubs in a stack, the stack must include at least one

Micro Hub 1503. You can connect to the Micro Hub 1503 to configure it in one of two

ways:

•Direct Connection through the CONSOLE Port

•Connection Using Telnet

Direct Connection through the CONSOLE Port

You can configure the Micro Hub 1503, by connecting a terminal or a PC directly to the

hub’s CONSOLE port as described in the section “Connecting the CONSOLE Port” in the

chapter “Installing Your Hub.”

Preparing for Configuration

Cisco Micro Hub User Guide

3-2

Connection Using Telnet

If the hub is correctly connected to a network, you can access the hub by using Telnet from

anywhere on that network and can use the configuration program to communicate with the

hub. Before making a Telnet connection to the hub, you must configure the hub with a valid

IP address, subnet mask, and default gateway using the configuration program.

Configuration Using a PC

If you are configuring the hub with a PC (not a dumb terminal), you need a type of

communication software called terminal emulation software to send commands to the hub.

Table 3-1 Common Terminal Emulation Software Programs

Terminal emulation software has changeable settings. To enable your PC to communicate

to the hub, specify the port used by your PC (for example, COM 1), and then configure the

software settings to the following:

•Terminal emulation type: ANSI

•Baud: 9600

•Data bit: 8

•Parity: None

•Stop bits: 1

•Flow control: None

PC Operating System Software

Windows 3.x or

Windows NT 3.5x

Terminal (included with the Windows software)

Windows 95 or

Windows NT 4.x

HyperTerm (included with the Windows software)

Macintosh ProComm, VersaTerm, ZTerm (supplied separately)

Using Your Hub Software 3-3

Command Conventions

This section describes some things you might need to know before using the commands to

configure the hub. If you are familiar with these conventions, you can skip this section.

•Enter commands by typing the text of the command at the configuration prompt and

then pressing the Return key.

•There are two configuration prompt levels:

—The guest-level prompt is the device name followed by an angle bracket (>):

Hub>

—The administrator-level prompt is the device name followed by a pound sign (#). To

reach this prompt, the user (usually the system administrator) must enter a password

with the enable command:

Hub>

Hub> enable

Password: ******

Hub#

•There are two editing modes provided by the configuration program—normal and

enhanced. For more information about the enhanced editing mode, refer to the

terminal editing command in the section “Editing Commands” later in this chapter.

The following editing commands can be used on the command line in either editing

mode:

—Backspaceerases characters to the left of the cursor.

— Delete erases characters to the right of the cursor (this may be different, depending

on the terminal emulation software that you are using).

—Ctrl-Ccancels a command prior to pressing the Return key.

—Tabor Ctrl-I completes a command name based on partial input.

Preparing for Configuration

Cisco Micro Hub User Guide

3-4

•You can abbreviate commands to the fewest letters that make them unique. For example,

for the show history command, you can enter:

Hub> show his

•Certain commands display multiple screens with this prompt between screens:

--More--

Press the space bar to see more output from the command or press Return to display

the next line. Press any other key to return to the prompt.

Configuration Modes

You configure the Micro Hub 1503 (or the attached stack) with the configuration program

that is a part of the hub’s firmware. There are two configuration modes: guest mode and

administrator mode (also called privileged mode). The commands available in guest mode

are a subset of those available in administrator mode.

When you first connect to the hub, the configuration program is set to guest mode. If you

are connecting to the hub using Telnet, you must also enter a Telnet session password. To

enter administrator mode, use the enable command and enter the administrator password.

You will then be prompted to enter the enable password, as shown below:

Hub> enable

Password: <enable_password>

Setting the Administrator Password

Some commands require the user to enter a password before they can be entered. This is an

important feature because it prevents accidental or unauthorized changes to your hub

settings and to your network.

Set the password using the password command, as shown below:

Hub# password

Old Password: <old_password>

New Password: <new_password>

Hub#

Using Your Hub Software 3-5

Forgot Your Password?

The <password> field can contain from 0 to 80 uppercase and lowercase alphanumeric

characters. Spaces are not allowed. The first character cannot be a number. Passwords are

case sensitive.

An example of a valid password is mypassword1.

Forgot Your Password?

If you forget the password that provides access to administrator-level commands or if you

forget the password required for Telnet sessions, you can bypass the password requirement

and set a new password. You must be connected to the hub through the CONSOLE port to

perform these steps.

Take the following steps:

Step 1 Turn the hub OFF, and wait 60 seconds before going to Step 2.

Step 2 Turn the hub ON, and wait while the following messages are displayed on the

terminal:

Starting the system...

Boot option : bootp get ip

Enter BOOTP phase, wait or press Ctrl-C to break...

.....

Bootup Error: Timeout, no response from BOOTP server.

Press RETURN to start a new session

Step 3 Press Ctrl-C.

Step 4 When the following prompt appears, enter a new administrator password:

New administrator password: <new_password>

Step 5 When the following prompt appears, re-enter the new password:

Confirm administrator password: <new_password>

Step 6 You are then prompted to enter and confirm a new Telnet session password, as

follows:

New telnet-session password: <new_telnet-session_password>

Confirm telnet-session password: <new_telnet-session_password>

Configuring the Hub

Cisco Micro Hub User Guide

3-6

Step 7 The following message appears, confirming that your new passwords have been

accepted:

Administrator and telnet passwords are modified.

Welcome to Cisco hub model 150x

Configuring the Hub

This section describes basic hub configuration.

Before you configure a Micro Hub 1503, have the following information available:

•IP address and IP subnet mask that you will assign to the hub if you are accessing the

configuration program using Telnet or SNMP.

•IP address for the TFTP server if you want to use TFTP bootup feature.

•IP address for the BOOTP server if you want to use the BOOTP feature.

•IP address of the hub’s gateway if you want to use Telnet or SNMP.

•IP addresses for authorized Trap Managers, if you want management stations to receive

trap messages generated by the hub.

Note If you do not have this information, you might need to get it from your system

administrator or from your network plan before you can complete your hub configuration.

Hub ID Numbers

This section describes how to determine the hub ID number of a particular Micro Hub in a

stack of Micro Hubs. Before configuring the hub, you should understand how hubs in a

stack are identified.

You cannot manually assign a hub ID number to a hub in a stack. The hub ID number is

assigned based on how the hubs are cabled together.

Note The physical location of a hub in a stack does not determine a hub’s ID number.

Using Your Hub Software 3-7

Hub ID Numbers

Here are two rules that determine hub ID numbers in a stack of hubs:

1The lowest hub ID number in a stack (1) is always assigned to the hub with another hub

connected to its OUT port and with no hub connected to its IN port.

2The highest hub ID number in a stack (any number from 2 to 5) is always assigned to

the hub with no hub connected to its OUT port and with another hub connected to its IN

port.

Figure 3-1 illustrates these rules.

Figure 3-1 Hub ID Numbers for Stacked Hubs

OUT STACKCONNECT IN

Hub ID = 1

Hub ID = 2

Hub ID = 3

Hub ID = 2

Hub ID = 1

H11447

Configuring the Hub

Cisco Micro Hub User Guide

3-8

Configuring the hub takes place in three major steps:

1Entering Administrator Mode

2Configuring IP and SNMP Parameters

3Configuring the SNMP Management Station

All of the commands used in the configuration steps are fully explained in the section

“Command Summary” later in this chapter.

Entering Administrator Mode

Step 1 Connect a console by following the instructions in the section “Connecting the

CONSOLE Port” in the chapter “Installing Your Hub” or start a Telnet session

with the hub.

Step 2 Turn the hub ON by setting the power switch to the ON ( | ) position.

Step 3 After a few seconds, you will see the user prompt. Use the enable command to

enter administrator mode:

Hub> enable

Step 4 After entering the command, you will be prompted to enter the administrator

password. If the administrator password has not been set, you can enter

administrator mode by pressing the Return key, as shown below:

Hub> enable

Password: <Return>

Hub#

Note If the administrator password has not been set, you should set it following

the steps in the section “Setting the Administrator Password” earlier in this

chapter. Record the password in a secure location.

The pound sign (#) after the prompt indicates that you are in administrator mode

and can enter the commands to configure the hub for IP and SNMP parameters.

Using Your Hub Software 3-9

Configuring IP and SNMP Parameters

The illustration below shows the network that is being configured in this section:

Figure 3-2 Example Network

Note The network addresses used in the steps below are examples only; they will not work

for your network. You should substitute them with the IP addresses that apply to your

network devices.

Step 1 Use the ip address command to configure the hub’s IP address, subnet mask,

and gateway address:

Hub# ip address 172.16.10.2 255.255.255.0 172.16.10.1

Step 2 Use the snmp community command to configure the SNMP communities and

their options:

Hub# snmp community 1 private rw

Server PC PC PC

SNMP network

management station

Micro Hub 1503

Router A

S6280

Configuring the Hub

Cisco Micro Hub User Guide

3-10

Step 3 Use the ip trap-manager command to configure the IP address of the SNMP

management station:

Hub# ip trap-manager 1 172.16.20.2

Basic IP and SNMP configuration is now complete. To return to guest mode, enter exit.

Enter exit a second time to close the current terminal session:

Hub# exit

Hub> exit

Configuring the SNMP Management Station

Make sure that the SNMP management station receives traps from the Micro Hub 1503

(and any Micro Hubs connected to it in a stack) by configuring the management station as

follows:

•Make sure the management station has entries for all the Micro Hubs in the stack.

•The entries for the Micro Hubs should have Get Community and Set Community

configured as private.

•The management station should be able to read SNMP information from the

Micro Hubs, such as port status and traffic counts.

•The management station should be able to control and manage the Micro Hubs,

including enabling and disabling ports and changing contact information.

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