Table of Contents

Overview of the Micro Switch
Features
Front-Panel LEDs
Rear-Panel Components
Management Options

Default Configuration Settings
Overview of the Cisco 1548 Switch Manager

Management Tasks Supported on the Switch Manager

Overview of the Command-Line Interface
Overview of SNMP

Network Examples Using the Micro Switch

High-Performance Desktop
Network Backbone

Overview

This chapter describes the features and components of the Cisco 1548M Micro Switch 10/100 (hereafter referred to as the "Micro Switch"). The Micro Switch is part of the Cisco Networked Office stack, a family of small-office networking platforms.

Overview of the Micro Switch

The Micro Switch is an 8-port managed switch with dual-speed, autonegotiated 10/100 Ethernet ports. The switch supports Spanning-Tree Protocol (STP), port-based virtual LANs (VLANs), Simple Network Management Protocol (SNMP) and web management functions.

Features

Table 1-1 describes the features of the Micro Switch.

Table 1-1: Feature Summary of the Micro Switch

Feature	Description
Management	SNMP and Remote Monitoring (RMON) support provides full configuration, management, and monitoring on a per-port basis. Three management interface options: The Cisco ConfigMaker configuration management application provides a single configuration interface for all products in the Cisco Networked Office stack. A web console with an embedded HTTP server provides an interface for all supported management functions. A command-line interface (CLI) provides the option of management through Telnet in-band or console port out-of-band connections. Menu-based diagnostic console for switch recovery tasks. CiscoView software, a GUI-based device management application, provides dynamic status, statistics, and comprehensive configuration information. Cisco Discovery Protocol (CDP) enables network management stations to discover the switch in a network topology.
VLANs	The switch supports up to four port-based VLANs. Each port can be assigned to one or to all VLANs.
Performance	Autosensing on all ports allows automatic configuration for either 10BaseT or 100BaseT connections. Each port automatically negotiates with a connected network device to operate in either half- or full-duplex mode. The switch stores each incoming packet in memory and then forwards the packet to the appropriate port for delivery.
Security slot	The switch can be secured to a desktop or other surface using lockdown equipment.
Supported addresses	The switch supports 4096 source and destination addresses.
Standards conformance	The switch complies with IEEE 802.3 10BaseT and IEEE 802.3u 100BaseTX standards.

Front-Panel LEDs

Figure 1-1 describes the switch front-panel LEDs.

Rear-Panel Components

Figure 1-2 shows the rear-panel ports, connectors, and LEDs.

Figure 1-2: Rear-Panel LEDs and Components of the Micro Switch

Management Options

You can use the default settings shipped with the switch, or you can customize the configuration through the Cisco 1548 Switch Manager web-based interface, the CLI, or SNMP.

Default Configuration Settings

The switch is designed to operate with little or no user intervention. After you assign the IP information, the switch uses its default settings (Table 1-2) and begins forwarding packets as soon as it is powered up and connected to compatible devices.

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Table 1-2: Default Settings and Cisco 1548 Switch Manager Pages

Feature		Default Setting	Switch Manager Page
Management
	IP information	0.0.0.0	IP Management Page
	VLAN membership	VLAN 1	VLAN Management Page
	Address table	---	Address Table Management Page
	Cisco Discovery Protocol (CDP)	Disabled	CDP Management Page
Performance Tuning
	Speed of ports	Autonegotiate	Port Management Page
	Duplex mode of ports	Autonegotiate	Port Management Page
Network Redundancy
	Spanning-Tree Protocol (STP)	Enabled	Spanning-Tree Management Page
Security
	Switch password	None	Home Page
	Community string	public/private	SNMP Management Page
	Trap manager	None	SNMP Management Page
	Write manager	None	SNMP Management Page
Diagnostics
	Port monitoring	Disabled	SPAN Configuration Page
	Usage reports	--- ---	Detailed Port Statistics Page Statistics Reports Page
	Remote monitoring	Enabled	---
Upgrades
	Firmware	---	System Configuration Page

For procedures on how to reset all switch console port settings to the factory defaults, see the "Resetting the Hub to the Factory Defaults" section.

Overview of the Cisco 1548 Switch Manager

The Cisco 1548 Switch Manager (hereafter referred to as the switch manager) is a web-based graphical user interface for basic switch configuration and monitoring. Using the switch manager, you can configure and monitor the switch from anywhere on your intranet.

Each switch manager page

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

• Displays current information about the switch

• 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 switch manager, you must have one of these web browsers installed on your management station:

Management Tasks Supported on the Switch Manager

The management tasks you can perform from the switch manager can be grouped as described in Table 1-3.

Procedures for accessing and using the switch manager are provided in

• "Accessing the Cisco 1538 Hub Manager" section

• "Configuring and Monitoring from the Hub Manager"

Table 1-3: Configuration and Monitoring Tasks

Changing Switch and Port Configuration Settings
	Assigning or Changing Basic Switch Information
	Changing the Port Settings
	Maintaining the Address Table
	Changing the Switch IP Information
	Changing the CDP Settings
	Assigning Ports to Different VLANs
	Changing the Spanning-Tree Protocol Settings
	Changing the System Configuration
Changing Switch Security
	Assigning or Changing the Switch Password
	Changing the SNMP Settings
Monitoring Switch and Port Conditions
	Using the Switch Image to Monitor the Switch
	Checking or Resetting Port Statistics
	Checking or Resetting Exception and Utilization Statistics
	Monitoring Port Activity
	Remote Monitoring

Overview of the Command-Line Interface

Using the CLI, you can access the switch software and perform the same basic system configuration and system monitoring tasks available through the switch 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. For complete information about using the CLI, refer to the Cisco 1548M Micro Switch 10/100 Command Reference.

Overview of SNMP

You can configure and monitor the switch by accessing the Management Information Base (MIB) variables through Simple Network Management Protocol (SNMP), an application-layer protocol facilitating the exchange of management information between network devices. The switch supports a comprehensive set of MIB objects, including four Remote Monitoring (RMON) groups. (The "Accessing the MIB Files through SNMP" section provides information about the MIB files and about accessing them.)

The SNMP system consists of three parts: SNMP manager, SNMP agent, and the MIB files. SNMP places all operations in a get-request, get-next-request, and set-request format. For example, an SNMP manager can get a value from an SNMP agent or store a value into that SNMP agent. The SNMP manager can be part of a network management system (NMS), and the SNMP agent can reside on a networking device such as a switch. You can compile the switch MIB files with your network management software. The SNMP agent can respond to MIB-related queries being sent by the NMS.

An example of an NMS is the CiscoWorks network management software. CiscoWorks uses the switch MIB variables to set device variables and to poll devices on the network for specific information. The results of a poll can be displayed as a graph and analyzed in order to troubleshoot internetworking problems, increase network performance, verify the configuration of devices, monitor traffic loads, and more.

Figure 1-3 shows how the SNMP agent gathers data from the MIB file, which holds information about device parameters and network data. The agent can send traps, or notification of certain events, to the manager.

Figure 1-3: SNMP Network

The SNMP manager uses information in the MIB files to perform the operations described in Table 1-4.

Table 1-4: SNMP Manager Operations

Operation	Description
get-request	Retrieves a value from a specific variable.
get-next-request	Retrieves a value from a variable within a table.1
get-response	Reply to a get-request, get-next-request, and set-request sent by an NMS.
set-request	Store a value in a specific variable.
trap	Send an unsolicited message from an SNMP agent to an SNMP manager indicating that some event has occurred.

1An SNMP manager does not need the exact variable name. It sequentially searches to find the needed variable from within a table.

Network Examples Using the Micro Switch

This section describes common examples of how you can use the switch:

High-Performance Desktop

You can build a network of high-performance users for your small business or workgroup by using the Micro Switch and other compatible network devices such as a router, PCs, or workstations. Figure 1-4 shows an example of such a network.

Figure 1-4: High-Performance Desktop Configuration

Network Backbone

Figure 1-5 shows an example of a network backbone for a small business or workgroup using a Micro Switch and other network devices.

Posted: Wed Feb 24 14:12:58 PST 1999
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