Cisco 1538 series User manual

CHAPTER

Overview 1-1

Overview

This chapter describes the features and components of the Cisco 1538 series Micro Hubs

10/100 (hereafter collectively referred to as the “Micro Hubs”). These class-II repeaters are

a part of the Cisco Networked Office stack, a family of stackable, desktop networking

platforms designed for small workgroups.

Overview of the Micro Hubs

The Micro Hubs are stackable, 8-port, 10/100-Mbps, autosensing Fast Ethernet class II

repeaters with internal bridging.

•The Cisco 1538M Micro Hub 10/100 (hereafter referred to as the “managed hub”) can

be monitored through a web console or the command-line interface. This hub can

manage a stack of up to 3 additional Micro Hubs and serve up to 32 user connections.

For an overview of the management features of this hub, see the “Management Options

(Cisco 1538M Hub)” section on page 1-7.

•The Cisco 1538 Micro Hub 10/100 (hereafter referred to as the “manageable hub”) is

without internal management applications but can be monitored and controlled through

interconnection to a managed hub.

Either hub model can be a standalone networking device or can connect to other routers,

switches, and hubs to form a larger network. You can also stack and connect up to four hubs

through the rear-panel ports to form a larger network.

Features

Cisco 1538 Series Micro Hub 10/100 Installation and Configuration Guide

1-2

Features

Table 1-1 summarizes the features of the Micro Hubs.

Table 1-1 Feature Summary of the Micro Switch

Feature Description

Management • Simple Network Management Protocol (SNMP) and Remote Monitoring (RMON)

provides configuration, management and monitoring on a per-port and per-hub basis.

• Three management interface options:

— The Cisco ConfigMaker configuration application provides a single configuration

interface for all products in the Cisco Networked Office stack.

— Cisco 1538 Hub Manager with an embedded HTTP server provides an interface for

all supported management functions.

— A command-line interface (CLI) supports management through Telnet in-band or

console port out-of-band connections.

• Menu-based diagnostic console for hub recovery tasks.

• Cisco Discovery Protocol (CDP) enables network management stations to discover the

hub in a network topology.

• Manages up to 32 ports in a 4-hub stack with one IP address.

Stacking • Integrated stacking ports allow up to four hubs in a single collision domain.

• Two managed hubs can be deployed for management backup.

Performance • Autosensing on all ports allows automatic configuration for either 10BaseT or

100BaseT connections.

• Built-in high-speed bridge function automatically connects 10BaseT and 100BaseT

workstations without an external switch or router.

• Embedded switch supports store-and-forward switching and filtering and forwarding

rate at full-wire speed.

MDI/MDI-X connectivity • MDI/MDI-X option for port 5 inter-hub connectivity without crossover cables.

• Class II repeater supports a two-hub daisy chain.

Connectivity • Complies to the IEEE 802.3 10BaseT and 802.3u 100BaseTX specifications.

Security slot • The switch can be secured to a desktop or other surface using lockdown equipment.

Overview 1-3

Front-Panel LEDs

This section describes the hub front-panel LEDs.

Figure 1-1 Front-Panel LEDs

1234

5678

PWR

COL

Blinking amber—Hub detects

collisions on the network. The LED

blinks faster as more collisions occur.

ACT

Blinking green—Traffic is present.

14347

10 MBPS

COL/ACT

100 MBPS

COL/ACT

PWR

Solid green—Micro Hub has power.

Solid amber—POST in progress.

After power-on—POST nonfatal failure.

With blinking port LED—POST fatal failure.

Off—Micro Hub does not have power.

Hub port status

Solid green—Good connection to network device (link).

Blinking green—Data is being sent or received through this port.

Blinking rate reflects the amount of data being received.

Solid amber—The hub has partitioned this port.

Off—No connection to network device (no link).

Rear-Panel Components

Cisco 1538 Series Micro Hub 10/100 Installation and Configuration Guide

1-4

Rear-Panel Components

Figure 1-2 shows the rear-panel ports, connectors, and LEDs for the Cisco 1538M and

Cisco 1538 Micro Hubs.

Figure 1-2 Rear-Panel LEDs and Components of the Cisco 1538M Managed Hub

14335

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538M

2x 3x10/100 4x

CONSOLE

234

5678

Hub ports, 1X through 8X (RJ-45)

Use 10BaseT or 100BaseTX Ethernet

straight-through cables to connect

network devices.

MDI/MDI-X button for port 5

OUT (default)—Connect 10BaseT or

100BaseTX PC, workstation, router, or

server with straight-through Ethernet

cable.

IN—Connect another Cisco hub.

Hub port status

Solid green—Link is established at 100 Mbps.

Off—Link is established at 10 Mbps or no link.

Power receptacle

Connect power cord

to this receptacle.

Lock

slot Console port

Stacking ports

The UP connector connects to

upstream hub DOWN connector.

The DOWN connector connects

to downstream UP connector.

Overview 1-5

Rear-Panel Components

Figure 1-3 Rear-panel Components of the Cisco 1538 Manageable Hub

16220

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538

2x 3x10/100 4x

234

5678

Hub ports, 1X through 8X (RJ-45)

Use 10BaseT or 100BaseTX Ethernet

straight-through cables to connect

network devices.

MDI/MDI-X button for port 5

OUT (default)—Connect 10BaseT or

100BaseTX PC, workstation, router, or

server with straight-through Ethernet

cable.

IN—Connect another Cisco hub.

Hub port status

Solid green—Link is established at 100 Mbps.

Off—Link is established at 10 Mbps or no link.

Power receptacle

Connect power cord

to this receptacle.

Lock

slot

Stacking ports

The UP connector connects to

upstream hub DOWN connector.

The DOWN connector connects

to downstream UP connector.

Stack Management

Cisco 1538 Series Micro Hub 10/100 Installation and Configuration Guide

1-6

Stack Management

Micro Hubs can be interconnected by using the stacking cable and the stacking connectors

on the rear panel of the hubs, creating a stack of up to four Micro Hubs (Figure 1-4). The

interconnected units in that stack appear to the rest of the network and to the management

interface as a single logical repeater. You can have a second managed hub in the stack act

as a redundant stack manager in case the primary manager fails.

Note You need at least one managed hub in your stack if you want to manage the stack.

Figure 1-4 Stacking Micro Hubs to Create Larger Managed Networks

For more information about stacking Micro Hubs, see “Installing Micro Hubs in a Stack”

on page 2-8.

MDI MDI-X

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538

2x 3x10/100 4x

234

5678

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538M

2x 3x10/100 4x

CONSOLE

234

5678

Cisco 1538M Hub

Cisco 1538 Hub

14346

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538

2x 3x10/100 4x

234

5678

DOWN

MDI -XMDI

LED

OFF

SPEED

100BaseTX

10BaseTX

RATING

100-127 /200-240 V~

0.3A / 0.2 50/60 Hz

6x 7x 8x

Cisco 1538M

2x 3x10/100 4x

CONSOLE

234

5678

Overview 1-7

Management Options (Cisco 1538M Hub)

The Cisco 1538M hub can manage a single hub or a hub stack. You can use the default

settings shipped with the hub, or you can customize the configuration through the Cisco

1538 Hub Manager web-based interface, the CLI, or SNMP.

The Cisco 1538 Hub Manager is the easiest interface to use for the basic configuration and

monitoring tasks. To perform all the configuration and monitoring tasks, use the CLI and

SNMP.

This section provides the following information:

•List of default configuration settings for the hub

•Overview of the Cisco 1538 Hub Manager and the basic management tasks you can

perform using it

Note Procedures for performing management tasks and detailed information about the

Cisco 1538 Hub Manager pages are also provided in the Cisco 1538 Hub Manager

online help.

•Overview of the CLI, which is fully described in the Cisco 1538 Series Micro Hub

10/100 Command Reference.

•Overview of SNMP and the hub Management Information Base (MIB) files.

Note The menu-based diagnostic console is described in the “Recovery Procedures Using

the Diagnostic Console” section on page 4-7.

Management Options (Cisco 1538M Hub)

Cisco 1538 Series Micro Hub 10/100 Installation and Configuration Guide

1-8

Default Configuration Settings

The hub is designed to operate with little or no user intervention. After you assign the IP

information, the hub uses its default settings (Table 1-2) and begins forwarding packets as

soon as it is powered up and connected to compatible devices.

For procedures on how to reset all hub console port settings to the factory defaults, see the

“Resetting the Hub to the Factory Defaults” section on page 4-14.

Table 1-2 Default Settings and Cisco 1538 Hub Manager Pages

Feature Default Setting Hub Manager Page

Management

IP information 0.0.0.0 IP Management Page

Stack management — Group Management Page

Cisco Discovery Protocol (CDP) Enabled CDP Management Page

Performance Tuning

Speed of ports Autonegotiate Port Management Page

Security

Hub password None Home Page

Community string public/private SNMP Management Page

Trap manager None SNMP Management Page

Write manager None SNMP Management Page

Diagnostics

Usage reports — Detailed Group Statistics Page

Detailed Port Statistics Page

Remote monitoring Enabled —

Upgrades

Firmware — System Configuration Page

Overview 1-9

Overview of the Cisco 1538 Hub Manager

The Cisco 1538 Hub Manager (hereafter referred to as the hub manager) is a web-based

graphical user interface for basic hub configuration and monitoring. Using the hub

manager, you can configure and monitor the hub from anywhere on your intranet.

Each hub manager page

•Provides fields, check boxes, and lists for changing the configuration settings

•Displays current information about the hub

•Provides online help for each page

—Detailed information about the fields, lists, check boxes, and buttons

—Specific procedures for performing management tasks

To use the hub manager, you must have one of these web browsers installed on your

management station:

•Netscape Communicator 4.03 or higher

•Microsoft Internet Explorer 4.01 or higher

Management Tasks Supported on the Hub Manager

The management tasks you can perform from the hub manager can be grouped as described

in Table 1-3.

Procedures for accessing and using the hub manager are provided in

•“Accessing the Cisco 1538 Hub Manager” section on page 2-27

•Chapter 3, “Configuring and Monitoring from the Hub Manager”

Note Information provided in Chapter 3, “Configuring and Monitoring from the Hub

Manager,” is also provided in the hub manager online help.

Management Options (Cisco 1538M Hub)

Cisco 1538 Series Micro Hub 10/100 Installation and Configuration Guide

1-10

Overview of the Command-Line Interface

Using the CLI, you can access the hub software and perform the same basic system

configuration and system monitoring tasks available through the hub manager. You can also

perform privileged configuration and troubleshooting tasks available only through the CLI

and SNMP.

Procedures describing how to access the CLI are in the “Accessing the CLI” section on

page 2-29. For complete information about using the CLI, refer to the Cisco 1538 Series

Micro Hub 10/100 Command Reference.

Table 1-3 Configuration and Monitoring Tasks

Changing Hub and Port Configuration Settings

Assigning or Changing Basic Hub Information on page 3-4

Changing the Port Settings on page 3-11

Managing the Hub Segments on page 3-17

Changing the Hub IP Information on page 3-21

Changing the CDP Settings on page 3-26

Changing the System Configuration on page 3-29

Changing Hub Security

Assigning or Changing the Hub Password on page 3-5

Changing the SNMP Settings on page 3-23

Monitoring Hub and Port Conditions

Using the Hub Image to Monitor the Hub on page 3-6

Checking or Resetting Port Statistics on page 3-15

Checking or Resetting Hub Statistics on page 3-19

Remote Monitoring on page 2-31

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