Linksys Etherfast User Manual

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EtherFast®Managed 24-Port

with Dual Gigabit Switch

Use this guide to install: Linksys EtherFast®Managed 24-Port with Dual Gigabit Switch (EF24G2M)

User Guide

Instant EtherFast®Series

COPYRIGHT & TRADEMARKS Copyright © 2001 Linksys, All Rights Reserved. EtherFast is a registered trademark of Linksys. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors.

LIMITED WARRANTY Linksys guarantees that every EtherFast®Managed 24-Port with Dual Gigabit Switch is free from physical defects in material and workmanship under normal use for FIVE years from the date of purchase. If the product proves defective during this warranty period, call Linksys Customer Support in order to obtain a Return Authorization Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. All customers outside of the United States of America and Canada shall be held responsible for shipping and handling charges.

IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT ISSUE REFUNDS. WARRANTY DOES NOT COVER NATURAL DISASTERS OR ACTS OF NATURE.

Linksys makes no warranty or representation, expressed, implied, or statutory, with respect to its products or the contents or use of this documentation and all accompanying software, and specifically disclaims its quality, performance, merchantability, or fitness for any particular purpose. Linksys reserves the right to revise or update its products, software, or documentation without obligation to notify any individual or entity. Please direct all inquiries to:

Linksys P.O. Box 18558, Irvine, CA 92623. FCC STATEMENT

The EtherFast

Managed 24-Port with Dual Gigabit Switch has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment or devices

• Connect the equipment to an outlet other than the receiver’s

• Consult a dealer or an experienced radio/TV technician for assistance

UG-EF24G2M-011029NC JL

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

Table of Contents

Introduction 1

Package Contents 2

Getting to Know the Switch 3

LEDs 3 The RJ-45 Ports 5 The Gigabit Ports 5 The Console Port 5

Installing the Switch 6

Pre-Installation Considerations 6 Rack-Mounting the Switch 7 Powering on the Switch 7 Uplinking the Switch 7

Switch Management 8

Overview 8

Configuring the Switch 12

Overview 12 Logging On to the Switch 12 Main Menu 13 System Information Menu 14

Management Setup Menu 17 Device Control Menu 30 Network Monitor Menu 65 System Restart Menu 91 Exit 92

Troubleshooting 93

Common Problems and Solutions 93

Glossary 96

Upgrading Firmware via the Serial Port 96

Glossary 93 Specifications 104

Environmental 104

Warranty Information 105 Contact Information 106

Introduction

Migrate your network to Gigabit speed with the EtherFast®Managed 24-Port with Dual Gigabit Switch. Perfect for today’s network computing demands,this new Managed 24-Port Switch from Linksys delivers Layer 3 switching and blazing transfer speeds for your network applications with integrated Gigabit over copper connectivity.

The Managed 24-Port Switch’s “intelligent” Layer 3 switching and design provide maximum network control, regulating traffic and eliminating server bottlenecks. Integrate the Managed 24-Port Switch into your current Ethernet network, and your data traffic efficiency will improve several times over. Connect your workstations to the managed 10/100 ports,and speed up access time for all your users in just one move. Connect your servers through the Gigabit ports for dedicated bandwidth of up to 1000Mbps—and you’ve maximized your network potential. Plus, configuration’s a snap using the Web management interface.

Save money and time with this all-in-one managed solution for Gigabit connectivity to your servers or Gigabit backbone.

The Linksys EtherFast®Managed 24-Port

with Dual Gigabit Switch

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

• One EtherFast®Managed 24-Port with Dual Gigabit Switch

• One Power Cord

• Mounting Brackets (not shown)

• One Serial/Console Cable (not shown)

• User Guide

• Registration Card (not shown)

Getting to Know the Switch

Power (Green) The LED will illuminate when the switch is

powered on.

SNMP (Green) The LED will illuminate when the switch is

being managed via SNMP.

Console (Green) The LED will illuminate when the switch is

being managed via the local console.

Fan Failure (Green) The LED will illuminate when a fan has failed. OverHeat (Green) The LED will illuminate when the switch is

overheating.

PER PORT

LNK (Green) The LED will illuminate when the port is

connected.

Mode (Green) The LED will illuminate when the port is

operating in full-duplex mode.

GIGABIT PER PORT (G1/G2)

LNK (Green) The LED will illuminate when the port

is successfully connected to a network.

ACT (Green) The LED will illuminate when the port is

actively operating.

LEDs

Package Contents

EtherFast® Managed 24-Port with Dual Gigabit Switch

The EtherFast®Managed 24-Port with Dual Gigabit Switch is equipped with twenty-four 10/100 RJ-45 ports. These RJ-45 ports support network speeds of either 10-100Mbps in half-duplex mode, or 20-200Mbps in full-duplex mode. Auto-sensing technology enables each port to automatically detect the speed of the device connected to it (10Mbps or 100Mbps), and adjust its speed and duplex accordingly.

To connect a device to a port, you will need to use a network cable. If you are using 100BaseTX devices you will need to use UTP Category 5 (or better) cable. The two Gigabit ports require UTP Category 5e cable (or better).

The EtherFast®Managed 24-Port with Dual Gigabit Switch is equipped with two Gigabit ports. These ports provide links to high-speed network segments or individual workstations at speeds of up to 1000Mbps (Gigabit Ethernet). The two Gigabit ports require UTP Category 5e cable (or better).

The EtherFast® Managed 24-Port with Dual Gigabit Switch is equipped with a serial port (located on the rear of the switch) that allows you to connect to a computer (for configuration purposes) using the provided serial cable.

The RJ-45 Ports

The Gigabit Ports

The Console Port

EtherFast®Series

MODE

COL (Amber) The LED will illuminate when collisions are

detected.

ACT (Amber) The LED will illuminate when there are active

ports.

FDX (Amber) The LED will illuminate when there are ports

operating in full-duplex mode.

100M (Amber) The LED will illuminate when there are ports

transmitting data at 100Mbps.

The Reset Button

If your Switch is having problems with network connections, press the Reset button for five seconds. This clears up any jammed connections, and is similar to pressing the Reset button on your PC to reboot it.

EtherFast® Managed 24-Port with Dual Gigabit Switch

The EtherFast®Managed 24-Port with Dual Gigabit Switch can be used as a free-standing unit, or installed in any standard 19-inch rack.

Use the following instructions to rack-mount the Switch:

Before you begin, disconnect all cables from the Switch.

1. Place the Switch right side up, with the front panel facing you.

2. Position a mounting bracket over the screw holes on one side of the

Switch.

3. Secure the mounting bracket by inserting three screws into the screw

holes. Use a screwdriver to tighten the screws, ensuring that they are fastened f irmly in place.

4. Repeat steps 2 and 3 to install the other mounting bracket on the opposite

side of the Switch.

5. Insert the Switch into the 19-inch rack and secure it with suitable

screws (not provided). Ensure that the ventilation holes are not obstructed.

The rack-mount installation is complete.

You can now re-connect the cables to the Switch.

To power on the Switch, simply connect the AC power cord to the back of the Switch, and then plug the power cord into an electrical outlet. The Switch will boot up within approximately 30 seconds.

Any of the 26 ports on the EtherFast®Managed 24-Port with Dual Gigabit Switch can act as an uplink port, allowing you to uplink to other switches or hubs using a standard Ethernet connection. UTP Category 5e (or better) cable is recommended when using the Gigabit ports.

To uplink the switch, connect one end of a network cable into the Switch, then connect the other end of the cable into the desired network device’s uplink port.

EtherFast®Series

Installing the Switch

Fast Ethernet Considerations

If you will be using the Switch for Fast Ethernet (100Mbps) or Gigabit (1000Mbps) applications, you must observe this guideline:

The maximum UTP cabling length using Category 5 cable is 328 feet (100m).

Full-Duplex Considerations

As previously mentioned, the Switch provides full-duplex support for its RJ45 ports. Full-duplex operation allows data to be sent and received simultaneously, doubling a port’s potential data throughput.

If you will be using the Switch in full-duplex mode, the maximum UTP cable length using Category 5e (or better) cable is 328 feet (100 meters).

Positioning the Switch

Before you choose a location for the Switch, observe the following guidelines:

• Keep cabling away from sources of electrical noise, power lines, and fluorescent lighting fixtures.

• Position the Switch away from water and moisture sources.

• To ensure adequate air flow around the Switch, be sure to provide a minimum of one inch (25mm) clearance.

• Do not stack free-standing Switches more than four units high.

Rack-Mounting the Switch

Powering on the Switch

Uplinking the Switch

Pre-Installation Considerations

EtherFast® Managed 24-Port with Dual Gigabit Switch

2. The following screen will appear. Enter a Name for this connection. In

the example below, the name of the connection is EF24G2M. Click the

OK button.

3. The following screen will appear. In the bottom drop down box labeled

Connect using:, click the arrow and choose the COM port that the Switch will be connected to. In the example below, COM1 is the port selected. Click the OK button.

EtherFast®Series

Switch Management

The Linksys EtherFast®Managed 24-Port with Dual Gigabit Switch offers an easy-to-use, menu-driven configuration program. This program can be accessed by a console interface, a Web browser, a telnet connection, or SNMP/RMON. Using this configuration program, you can perform various switch configuration and management activities, including:

• Enable/disable any port

• Set the communication mode for any port

• Configure SNMP parameters

• Add ports to network VLANs

Local Console Management

You can manage the Switch locally by connecting the switch to a PC or workstation with terminal emulation software using the serial port.

The serial port settings need to be conf igured before connecting to the Switch. In order to change the settings of your port, run the Hyperterminal program. This program comes packaged with Windows, but it may not be installed on your computer. It should be located as is shown below (varies according to operating system). If it is not, consult your Windows documentation for instructions on installing Hyperterminal.

1. Click the Start button. Select Accessories and then Communications.

Hyperterminal should be one of the options listed in this menu. Select Hyperterminal.

Overview

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

Telnet Management

Telnet management is available after the Switch has been configured with a valid IP address, subnet mask, and default gateway (for Layer 2 mode) via the console interface. Use telnet from any computer attached to the network.

SNMP/RMON Management

SNMP/RMON management is available after the Switch has been configured with a valid IP address, subnet mask, and default gateway (for Layer 2 mode) via the console interface. Manage the Switch from any network computer using network management software.

NNoottee::

The Switch’s configuration program only provides access to basic configuration functions. To access the full range of SNMP management functions, you must use SNMP-based network management software.

4. When the following screen appears, make sure that the Switch’s serial port settings are as follows:

BAUD RATE: 19200 DATA BITS: 8 PARITY: None STOP BITS: 1 FLOW CONTROL: None

Click the OK button.

Web Management

Web management is available after the Switch has been configured with a valid IP address, subnet mask, and default gateway (for Layer 2 mode) via the console interface. Use a standard Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above is suggested) from any computer attached to the network. The Switch has a default IP address of 192.168.1.254 and a default subnet address of 255.255.255.0.

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

Configuring the Switch

The Switch’s menu-driven configuration program may be configured using the local console, a Web browser, telnet, or SNMP/RMON. The remote management methods can be used once the IP parameters have been set via the local console.

When logging on to the Switch, you will receive the following screen prompt:

User Name: Password:

Enter the default User Name (“admin”), and press Enter. Do not enter anything for the Password, and press Enter.

When you select User Configuration from the Management Setup Menu (discussed later in this User Guide), you will be allowed to define a new administrator password.

After you log on to the Switch, the Main Menu screen will appear.

The Main Menu screen consists of a series of options. Each option leads you to the screen for that management setting. Highlighting any option selects it; pressing the Enter key takes you to that screen.

To navigate through the Console Interface, use the Tab or arrow keys to move, the Enter key to select, and the Esc key to return to the previous selection. Scroll through choices using the spacebar. Options for the currently selected item are displayed in the highlighted area at the bottom of the interface screen.

The text string in the top right corner of the screen shows if the Switch is operating as a Layer 2 switch or as a multilayer routing switch.

• System Information Menu - Displays a basic description of the switch,

including contact information and hardware and fir mware versions.

• Management Setup Menu - Adjust the communication parameters, ensur-

ing a reliable connection.

• Device Control Menu - Controls a broad range of functions, including

port mode, port mir roring, port tr unking, spanning tree, VLANs, IP subnets, multicast filtering, and routing protocols.

Main Menu

Overview

Logging On to the Switch

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

• Network Monitor Menu - Provides access to port statistics, RMON statis-

tics, address tables, VLAN registration and forwarding information, multicast groups, and subnet addresses.

• System Restart Menu - Resets the management agent.

• Exit - Exits the program and terminates communications with the Switch

for the current session.

The System Information Menu displays a basic description of the Switch, including contact information and hardware and fir mware versions.

• System Information - Provides basic system descriptions, including con-

tact information.

• Switch Information - Shows hardware and firmware version numbers,

power status, and Gigabit port usage of the Switch.

Select OK to return to the previous panel.

System Information

The System Information screen displays descriptive information about the Switch or system.

• System Description - System hardware description.

• System Object ID - MIB II object identifier for the Switch’s network

management subsystem.

• System Up Time - Length of time the current management agent has been

running. Note that the f irst value is in centiseconds.

• System Name* - Name assigned to the switch system.

• System Contact* - Contact person for the system.

• System Location* - Specifies the area or location where the system

resides.

* The maximum string length is 99, but the screen only displays 45 characters. You can use the arrow keys to browse the entire string.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

System Information Menu

EtherFast® Managed 24-Port with Dual Gigabit SwitchEtherFast®Series

The Management Setup Menu screen allows you to adjust the communication parameters, ensuring a reliable connection. The new administrator password is set through this menu. The IP parameters for Web, telnet, or SNMP/RMON management are set here as well.

• Network Configuration - Includes IP setup, ping facility, and HTTP

setup for the on-board Web agent.

• Serial Port Configuration - Sets communication parameters for the serial

port, including baud rate, console time-out, and screen data refresh interval.

• SNMP Configuration - Activates authentication failure traps and conf ig-

ures communities and trap managers.

• User Configuration - Sets the user names and passwords for system

access.

• TFTP Download - Downloads new version of fir mware to update your

system.

• Configuration File - Allows downloading of a configuration f ile.

Select OK to return to the previous panel.

Management Setup Menu

Switch Information

The Switch Information screen displays hardware and firmware version numbers for the main board, as well as the power status.

• Hardw are Version - Hardware version of the main board.

• Firmware Version - System firmware version in ROM.

• Serial Number - Serial number of the main board.

• Number of Ports - Number of ports available on this Switch.

• Power Status - Shows if power is active or inactive.

• Fan Power Status - Shows if power to fan is active or inactive.

• G1 Information - Speed of the first Gigabit port.

• G2 Information - Speed of the second Gigabit port.

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit SwitchEtherFast®Series

IP Configuration

The IP Configuration menu allows you to configure the IP parameters. (Only displayed in Layer 2 mode)

• Interface T ype - Indicates IP over Ethernet.

• IP Address - IP address of the Switch you are managing. The system

supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices, must have an IP address.

• Subnet Mask - Subnet mask of the Switch. This mask identifies the host

address bits used for routing to specific subnets.

• Gateway IP - Gateway used to pass trap messages from the system to the management station. Note: The gateway must be defined (when operating at Layer 2) if the management station is located in a different IP segment.

• IP State - Specif ics whether IP functionality is enabled via manual configuration (def ault setting), or set by Boot Protocol (BOOTP).

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

Network Configuration

The Network Configuration menu allows you to set the Switch’s IP address, configure the IP parameters, or enable the on-board Web management.

• IP Configuration* - Sets the bootup option or configure the Switch’s IP

parameters.

• IP Connectivity T est (Ping) - Tests IP connectivity to a specified device.

• HTTP Configuration - Allows the admin to enable or disable the Web

administration.

* This menu does not appear if the Switch is set to multilayer mode. In this case, you need to configure an IP interface for each VLAN that needs to connect to any device outside of its own VLAN group.

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit SwitchEtherFast®Series

HTTP Configuration

The HTTP Conf iguration screen allows you to enable or disable Web management.

Note: Port 80 is used for HTTP service.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

IP Connectivity Test (Ping)

The IP Connectivity Test is used to see if another site or node on the network can be reached.

• IP Address - IP address of the device you want to ping.

• T est T imes - The number of ICMP echo requests to send to the specified

site. Range varies from 1 to 1000.

• Success/Failure - The number of times the specified site has responded—

or not—to a ping request.

Note: There is a 10-second interval between pings.

Select Start to begin the test. Select Cancel to cancel the test.

EtherFast® Managed 24-Port with Dual Gigabit SwitchEtherFast®Series

SNMP Configuration

The SNMP Conf iguration screen displays parameters for the Simple Network Management Protocol (SNMP).

• Send Authentication F ail Tr aps - Issue a trap message to specified IP

trap managers whenever authentication of an SNMP request fails. Default is enabled.

• SNMP Communities - Assigns SNMP access based on specified strings.

• IP Trap Managers - Specifies management stations that will receive

authentication failure messages or other trap messages from the Switch.

Select OK to return to the previous panel.

Serial Port Configuration

The Serial Port Configuration screen allows you to access the communication parameters for the Switch’s serial port.

• Baud Rate - The rate at which data is sent between devices. Default is

19200. Options are 9600, 19200, and 38400 baud.

• Data Bits - Sets the data bits of the RS-232 port. Options are 7 and 8.

• Stop Bits - Sets the stop bits of the RS-232 port. Options are 1 and 2.

• Parity - Sets the parity of the RS-232 port. Default is None. Options are

none, odd, and even.

• Time-Out - If no input is received from the attached device after this

interval, the current session is automatically closed. Default is 10 minutes. The range is 0 to 100 minutes, where 0 indicates disabled.

• Auto Refresh - Sets the interval before a console session will auto refresh

the console information, such as Spanning Tree Information, Port Configuration, Port Statistics, and RMON Statistics. Default is 1 second. The range is 0, or 5 to 255 seconds, where 0 indicates disabled.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit SwitchEtherFast®Series

IP Trap Managers

The IP Trap Managers screen specifies management stations that will receive authentication failure messages or other trap messages from the Switch. Up to five trap managers may be entered.

• IP Address - IP address of the trap manager.

• Community Name - A community specified for trap management access.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

SNMP Communities

The SNMP Communities screen allows you to configure the community strings authorized for management access. Up to five community names may be entered.

• Community Name - A community entry authorized for management

access. Maximum string length is 19 characters.

• Access - Management access is restricted to Read Only or Read/Write.

• Status - Sets administrative status of entry to enabled or disabled.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Add User

The Add User screen allows you to add a user.

• User Name - Specifies user authorized management access to the Switch via the console, telnet, or the Web.

• Password - Sets up the password for the new user.

• Access Right - ADMIN: Read/Write for all screens.

GUEST: Read Only for all screens.

• Console Access - Authorizes management via the console.

• T elnet Access - Authorizes management via a telnet connection.

• HTTP Access - Authorizes management via HTTP, e.g., a Web browser.

Select OK to confirm the changes. Select Cancel to cancel any changes.

EtherFast®Series

User Configuration

The User Configuration screen to restrict management access based on specified user names and passwords. There are two user types, Administrator and Guest. Only the Administrator has write access for parameters governing the SNMP agent.

• User Name - Specifies user authorized management access to the

Switch via the console, telnet, or the Web.

• Access Right - ADMIN: Read/Write for all screens.

GUEST: Read Only for all screens.

• Console - Authorizes management via the console.

• Telnet - Authorizes management via a telnet connection.

• HTTP - Authorizes management via HTTP, e.g., a Web browser.

Select Add to add a user. Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Configuration File

The Configuration File screen allows you to load a configuration file on any Switch on the network.

• Station IP - IP address of the Switch you want the configuration f ile to be sent to.

• Operation - Gives you the choice of downloading the configuration f ile from your Switch.

Download from switch - Downloads the cur rent switch configuration to a file on the client PC.

Upload to switch - Uploads a configuration file to the Switch from the client PC.

Select Start to begin the download. Select Cancel to cancel the download.

EtherFast®Series

TFTP Download

The TFTP Download screen lets you load software updates to permanent flash ROM in the Switch. After downloading the new software, the agent will automatically restart itself.

• Download Server IP - IP address of a TFTP server.

• Download Filename - The binar y file to download.

• Download Option - You may choose either Runtime Code or Post Code.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Note: This screen shots shows the Device Control Menu displayed by a Layer 2 switch.

• IGMP Snooping Configuration - Configures IGMP multicast filtering. (Only displayed for Layer 2 mode. When the Switch is in multilayer mode, IGMP Snooping Conf iguration is available through the IP Menu.)

Select OK to return to the previous panel.

EtherFast®Series

The Device Control Menu is used to control a broad range of functions, including port mode, port mir roring, port tr unking, Spanning Tree, VLANs, IP subnets, multicast f iltering, and routing protocols.

Note: This screen shots shows the Device Control Menu displayed by a multilayer switch.

• System Mode - Sets the Switch to operate as a Layer 2 switch or as a mul-

tilayer routing switch.

• Layer 2 Menu - Conf igures por t communication mode, mir ror por ts, and

port trunking.

• Bridge Menu - Configures the Spanning Tree Protocol for the bridge or

for specific por ts, GMRP and GVRP for automatic registration of multicast and VLAN groups, traffic class priority threshold, and address aging time.

• VLAN Menu - Configures VLAN settings for specific por ts, and defines

the port membership for VLAN groups.

• IP Menu - Configures the subnets for each VLAN group, global conf igu-

ration for unicast and multicast routing protocols, and IGMP snooping. (Only displayed for multilayer mode)

• Security Menu - Configures security settings here.

Device Control Menu

EtherFast® Managed 24-Port with Dual Gigabit Switch

Layer 2 Menu

The Layer 2 Menu contains options for port configuration, port mir roring, and port trunking.

• Port Configuration - Enables any port, enables/disables flow control,

and sets communication mode to auto-negotiation, full duplex, or half duplex.

• Mirror Port Configuration - Sets the source and target ports for mir-

roring.

• Port Trunking Configuration - Specif ies por ts to group into agg regate

trunks.

• Static Unicast Address Configuration - Used to manually configure

host MAC addresses in the unicast table.

• Static Multicast Address Configuration - Used to manually configure

host MAC addresses in the multicast table.

Select OK to return to the previous panel.

EtherFast®Series

System Mode

The System Mode screen lets you set the Switch to operate as a Layer 2 switch or as a multilayer routing switch. As a Layer 2 switch, the Switch makes all filtering and forwarding decisions based strictly on MAC addresses. As a multilayer routing switch, it switches packets for all non-IP protocols based on MAC addresses, and routes all IP packets based on the specified routing protocol.

• Layer 2 - Filtering and forwarding decisions will be based on MAC

addresses for all protocol traffic.

• Multilayer - Switching based on MAC addresses will be used for all

non-IP protocol traffic, and routing will be used for all IP protocol traffic.

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit Switch

connected directly to the Switch when its buffers fill. When enabled, back pressure is used for half duplex and IEEE 802.3x for full duplex.

Note: Flow control should not be used if a port is connected to a hub.

• Jack T ype - Shows the jack type for each port. Ports 1-26 are RJ-45.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes. Select Prev Page to view the previous page. Select Next Page to view the next page.

Mirror Port Configuration

The Mirror Port Conf iguration screen allows you to mirror traffic from any source port to a target port for real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. When mirroring port traffic, the target port must be included in the same VLAN as the source port.

• Enable Port Mirror - Enables or disables the mirror function.

• Mirrored Ports (Tx/Rx) - The port whose transmitted or received traffic

will be mirrored. Press Add to specify mirrored ports.

EtherFast®Series

Port Configuration

The Port Configuration screen lets you display or set communication parameters for any port or module on the Switch, including administrative status, auto-negotiation, default communication speed and duplex mode, as well as flow control in use.

• Link Status - Indicates if the port has a valid connection to an

external device.

• Admin Status - Allows you to disable a port due to abnormal behavior

(e.g., excessive collisions), and then re-enable it after the problem has been resolved.

• Auto Negotiate - Enables or disables auto-negotiation for port speed,

duplex mode, and flow control.

• Default T ype - If auto-negotiation is disabled, the port will be set to the

indicated speed and duplex mode.

• Current Type - Indicates the current speed and duplex mode.

• Flow Control - Used to enable or disable flow control. Flow control can

eliminate frame loss by “blocking” traffic from end stations or segments

EtherFast® Managed 24-Port with Dual Gigabit Switch

Static Unicast Address Configuration

The Static Unicast Address Table can be used to assign the MAC address for a host device to a specific port on this Switch. Static unicast addresses are never aged out, and cannot be learned on another port.

• Address - The MAC address of a host device attached to this Switch.

• Port - The switch port the host device is attached to.

To assign a destination MAC address to one or more ports, use Add. To delete or modify an address, highlight it with the cursor and press Enter. Select Apply to make changes. Select OK to return to the previous panel. Select Prev Page to view the previous page. Select Next Page to view the next page. To display a specific page, set the page number in the Page f ield and then press Apply.

EtherFast®Series

• Monitor Port - The port that will duplicate the transmitted or received

traffic appearing on the mirrored por t.

Note:You can mirror multiple ports to a single port to view traffic such as that crossing a port trunk. However, note that some packets may be dropped for moderate to heavy loading.

Select Apply to make changes. Select OK to return to the previous panel. Select Add to add a port.

Port Trunking Configuration

Ports can be combined into an aggregate link to increase the bandwidth of a network connection or ensure fault recovery. You can configure trunks between any two switches. The RJ-45 ports on this Switch can be grouped into a trunk consisting of two, four, or eight ports, creating an aggregate bandwidth up to 400, 800, or 1600Mbps when operating at full duplex.

• Index - The trunk identif ier.

• Port Count - Trunks can contain 2, 4, or 8 ports.

• Port Number - The ports assigned to each trunk.

Select OK to return to the previous panel. Select Add to add a trunk.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Static Multicast Address Configuration

The Static Multicast Address Table can be used to assign a destination MAC address (and the corresponding ports) to the VLAN group used for a specific multicast ser vice. Static multicast addresses are never aged out, and traffic with these addresses can only be forwarded to ports specified in this table.

• VLAN - The VLAN cor responding to this multicast ser vice.

• Address - The destination MAC address for a multicast service.

• Port - The ports to which this multicast traffic can be forwarded. Read

the numbers vertically; they range from 1-26. For each port number, there are two choices:

If the letter “M” is present, it indicates that the VLAN has access to messages transmitted by that particular port.

If there is no letter “M,” then there is no access to messages trans mitted by that particular port.

Select Apply to make changes. Select OK to return to the previous panel. Select Prev Page to view the previous page. Select Next Page to view the next page. To display a specific page, set the page number in the Page f ield and then press Apply.

EtherFast®Series

Add Static Address Entry

The Add Static Address Entr y screen allows you to add static

addresses for unicasting.

• Address - The MAC address of a host device attached to this

Switch.

• Port - The switch port the host device is attached to.

Select OK to confirm the changes. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Bridge Menu

The Bridge Menu is used to configure settings for the Spanning Tree Algorithm, as well as the global bridge settings for GMRP (GARP Multicast Registration Protocol) and GVRP (GARP VLAN Registration Protocol), traffic classes priority threshold, and address aging time.

• Bridge Configuration - Contains global bridge settings for STA (includ-

ing bridge priority, hello time, forward delay, maximum message age), GMRP, GVRP, traffic class priority threshold, and address aging time.

• Spanning Tree Port Configuration - Contains STA settings for individual

ports, including port priority, path cost, and fast forwarding.

Select OK to return to the previous panel.

EtherFast®Series

Add Multicast Address Entry

The Add Static Address Entr y screen allows you to add static

addresses for multicasting.

• VLAN - The VLAN cor responding to this multicast ser vice.

• Address - The destination MAC address for a multicast service.

• Port - The ports to which this multicast traffic can be forwarded.

Read the numbers vertically; they range from 1-26. For each port number, there are two choices: “M” or nothing. Use the spacebar to scroll through the choices.

Select the letter “M” to indicate that the VLAN has access to messages transmitted by that particular port.

Select a blank space to indicate that there is no access to messages transmitted by that particular port.

Select OK to confirm the changes. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

• GVRP - GVRP defines a way for switches to exchange VLAN informa-

tion in order to register VLAN members on ports across the network. This function should be enabled to permit automatic VLAN registration, and to support VLANs which extend beyond the local switch.

• Priority Threshold - This Switch supports Quality of Service (QoS) by

using two priority queues, with Weighted Fair Queuing for each port.

• Aging Time - Time-out period in seconds for aging out dynamically

learned forwarding information. Range varies from 10-415 seconds.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

Spanning Tree Port Configuration

The Spanning Tree Port Configuration allows you to configure spanning tree port settings.

• Type - Shows port type as 100TX for 10Base-T/100Base-TX, or

1000T for 1000Base-T.

• Priority - Defines the priority for the use of a por t in the STA algorithm.

If the path cost for all ports on a switch are the same, the port with the highest priority (that is, lowest value) will be configured as an active link in the Spanning Tree. When more than one port is assigned the highest

EtherFast®Series

Bridge Configuration

The Bridge Configuration screen allows you to configure global bridge settings.

• Spanning T r ee - Enable this parameter to participate in a STA compliant

network.

• Bridge Priority - Bridge priority is used in selecting the root device,

root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device. Enter a value from 0-65535. The lower the numeric value, the higher the priority.

• Hello Time - Time interval (in seconds) at which the root device trans-

mits a configuration message.

• Forward Delay - The maximum time (in seconds the root device will

wait before changing states.

• Max Age - The maximum time (in seconds) a device can wait without

receiving a configuration message before attempting to reconfigure.

• GMRP - GMRP allows network devices to register endstations with

multicast groups.

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

priority, the port with the lowest numeric identifier will be enabled. The range is 0-255.

• Cost - This parameter is used by the STA algorithm to deter mine the best

path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. (This takes precedence over port priority.)

• Fast Forwarding - This parameter is used to enable/disable the Fast

Spanning Tree mode for the selected port.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes. Select Prev Page to view the previous page. Select Next Page to view the next page.

VLAN Menu

The VLAN Menu is used to assign any port on the Switch to any of up to 256 VLAN groups. By using IEEE 802.1Q compliant VLANs, you can organize any group of network nodes into separate broadcast domains, confining broadcast traffic to the originating group. This also provides a more secure and cleaner network environment.

• VLAN Port Configuration - Configure GARP, the def ault VLAN identi-

fier, default port priority, VLAN tagging on the attached link, GVRP and

GMRP status, and filtering of incoming frames for VLAN groups a specific por t does not belong to.

• VLAN T a ble Configuration - Use this screen to create a new VLAN or

modify the settings for an existing VLAN.

Select OK to return to the previous panel.

VLAN Port Configuration

The VLAN Port Configuration screen allows you to configure GARP, the default VLAN identifier, default port priority, VLAN tagging on the attached link, GVRP and GMRP status, and filtering of incoming frames for VLAN groups a specific port does not belong to.

GARP

Group Address Registration Protocol is used by GVRP and GMRP to register or deregister client attributes for client services within a bridged LAN.

• Join Time - The interval (centiseconds) between transmitting

requests/queries to participate in a group.

• Leav e Time - The interval (centiseconds) a port waits before leaving a

group. This time should be set to more than twice the Join Time. This

EtherFast® Managed 24-Port with Dual Gigabit Switch

VLAN Table Configuration

The VLAN Table Conf iguration screen is used to create a new VLAN or modify the settings for an existing VLAN.

• VLAN - The ID for the VLAN cur rently displayed. The range is 1-2048.

• Port - Port entries may be marked as:

– (Normal) Uses GVRP to determine port membership. S (Static) Adds por t as a static entry. GVRP protocol

is disabled.

R (Registration Fixed) Adds port as a static entry. GVRP

protocol messages are still forwarded through this port.

X (Forbidden) Disables GVRP for this VLAN on the

specified por t.

EtherFast®Series

ensures that after a Leave or Leave All message has been issued, the applicants can re-join before the port actually leaves the group.

• Leav e All Time - The interval (centiseconds) between sending out a

Leave All quer y message for g roup participants and the por t leaving the group. This interval should be considerably larger than the Leave Time to minimize the amount of traffic generated by nodes rejoining the group.

VLAN and Priority

These fields set the def ault values for VLANs, port priority, GVRP, and GMRP.

• Port VID - The VLAN ID assigned to untagged frames received on this

port.

• Port Default Priority - Sets the default ingress priority to any value

beneath the priority threshold to specify the low priority queue, or to any value equal to or above this threshold to specify the high priority queue.

• VLAN Tagging - Indicates whether or not VLAN tags will be included

on frames passing through this port.

• GVRP - Enables or disables GVRP for this port. When disabled, any

GVRP packets received on this port will be discarded and no GVRP registrations will be propagated from other ports. Note: GMVP must be enabled for the Switch before this setting can take effect.

• GMRP - Enables or disables GMRP for this port. When enabled, this port will allow endstations to register with multicast groups. Note: GMRP must be enabled for the Switch before this setting can take effect.

• Ingress Filtering - If enabled, incoming frames for VLANs that do not include this ingress port in their member set will be discarded at the ingress port.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes. Select Prev Port to view the previous

port. Select Next Port to view the next port. To display a specific port, set the port number in the Page field and then press Apply.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Subnet Configuration

The Subnet Configuration screen allows you to specify an IP interface for any VLAN conf igured on this Switch that needs to communicate with a device outside of its own group (that is, another network segment).

• IP Address - The IP address associated with the specified VLAN inter-

face. By convention, the last three digits should be set to “254” to readily distinguish this device as a router port.

• Subnet Mask - A template that identifies the address bits in the host

address used for routing to specific subnets. Each bit that cor responds to a “1” is part of the network/subnet number, and each bit that corresponds to “0” is part of the host number.

• VLAN - The VLAN associated with this IP interface.

• RIP - Routing Information Protocol for unicast routing.

• DVMRP - Distance-Vector Multicast Routing Protocol.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes. Select Prev Pa ge to view the previous

page. Select Next Page to view the next page. To display a specific page, set the page number in the Page field and then press Apply. Select Add to add an IP interface.

EtherFast®Series

IP Menu

The IP Menu is used to conf igure the IP subnets for each VLAN on your Switch, the unicast and multicast routing protocols, and IGMP. This menu is only available for a Switch in multilayer mode.

• Subnet Configuration - Specifies the IP interface for VLANs configured

on this Switch, including the subnet address and routing protocols.

• Protocol Configuration - Enables the unicast and multicast routing pro-

tocols globally for this Switch.

• Static ARP Configuration - Specifies the static Address Resolution

Protocol.

• Static Route - Conf igures a static route.

• Default Route - Def ines the router to which this Switch will forward all

traffic for unknown networks.

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Protocol Configuration

The Protocol Configuration screen is used to globally enable or disable unicast or multicast routing protocols for the Switch.

• ARP - Address Resolution Protocol. Select Advanced for additional

configuration.

• Pro xy ARP - Proxy Address Resolution Protocol.

• RIP - Routing Information Protocol for unicast routing. Select Advanced for additional configuration.

• DHCP Relay - Dynamic Host Configuration Protocol relay. Select Advanced for additional configuration.

• IGMP Snooping - IGMP multicast filtering. Select Advanced for addtional configuration. (See page 64.)

• DVMRP - Distance-Vector Multicast Routing Protocol.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast®Series

Add Subnet

The Add Subnet screen allows you to add an IP interface.

• VLAN - The VLAN associated with this IP interface.

• Select - Use this option to create or modify a VLAN.

• IP Address - The IP address associated with the specified VLAN

interface.

• Subnet Mask - A template that identifies the address bits in the

host address used for routing to specific subnets.

• Pro xy ARP - Proxy Address Resolution Protocol.

• RIP - Routing Information Protocol for unicast routing.

• DVMRP - Distance-Vector Multicast Routing Protocol.

Select OK to confirm the changes. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

RIP Configuration

The RIP Conf iguration screen allows you to specify the how routers exchange routing table information.

• RIP Update Time - Duration of timeout (in seconds).

• Default Route Advertisement - Default route messages.

• Static Route Advertisement - Static route messages.

• Ignore Host Route - Does not use host routes.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast®Series

ARP Configuration

The ARP Configuration screen allows you to specify the timeout duration.

• ARP Timeout - Duration of timeout (in minutes).

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Static ARP T able

The Static ARP Table screen is used to specify the static Address Resolution Protocol.

• IP Address - IP address statically mapped to a physical MAC address.

• MAC Address - MAC address statically mapped to the corresponding IP address.

• Interface - The index number of the IP interface that will use this static ARP entry. (Por t “0” refers to the CPU.)

EtherFast®Series

BOOTP Relay Database Configuration

The BOOTP Relay Database Configuration screen allows you to specify the IP address for a BOOTP relay server.

• Index Server Address - Used to define any preferred DHCP

servers or the outbound subnetwork for relaying a DHCP request broadcast. (Up to five entries are permitted.)

Select OK to return to the previous panel. Select Add to add another entry.

Add BOOTP Relay Server

The Add BOOTP Relay Server screen allows you to add an entry.

• IP Address - IP address of ser ver.

Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Static Route Table

The Static Route Table screen is used to conf igure a static route.

• Destination Network - A destination network, subnet, or host.

• Destination Mask - The subnet mask that specifies the bits to match. A routing entry will be used for a packet if the bits in the address set by the destination mask match the destination network.

• VLAN - The VLAN within which the gateway or destination address resides.

• Next Hop - The IP address of the router at the next hop.

• Type - The IP route type for the destination network.

Direct - A directly connected subnetwork Indirect - A remote IP subnetwork or host address Myself - A switch IP address on a specif ic IP subnetwork Bcast - A subnetwork broadcast address Mcast - An IP multicast address Invalid - An illegal IP address to be filtered

EtherFast®Series

Add Static ARP Entry

The Add Static ARP Entr y screen is used to add a static ARP entry.

• IP Address - IP address statically mapped to a physical MAC

address.

• MAC Address - MAC address statically mapped to the correspon-

ding IP address.

• Interface - The index number of the IP interface that will use

this static ARP entry. (Port “0” refers to the CPU.)

Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

Default Route Menu

The Default Route Menu screen is used to def ine a route to which this Switch will forward all traffic for unknown networks.

• VLAN - The VLAN which has the IP interface to the default router.

• Next Hop Address - The IP address of the default router.

• Metric - The number of hops required to reach the default router.

Select Delete to delete the route. Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast®Series

Add Routing Entry

The Add Routing Entry screen is used to add a routing entry.

• IP Address - IP address of static ARP entry.

• MAC Address - MAC address of static ARP entry.

• Interface - Identification number for interf ace of static ARP entry.

• Routing Metric - Indicate the number of hopes to the destination

network.

Select OK to return to the previous panel. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

MACFiltering Configuration

The MAC Filtering Configuration screen allows you to filter out specif ied MAC addresses. Any node that presents a security risk or is malfunctioning can be filtered from this Switch. Security filtering can be used to drop all the traffic from a host device based on a specif ied MAC address.

To add a MAC address, use Add. To delete an address, highlight it with the cursor and press Enter. Select Apply to make changes. Select OK to return to the previous panel. Select Prev Page to view the previous page. Select Next Page to view the next page. To display a specific page, set the page number in the Page field and then press Apply.

EtherFast®Series

Security Menu

The Security Menu is used to configure security options.

• MAC Filtering Configuration - Security filtering can be used to drop all

the traffic from a host device based on a specif ied MAC address. Traffic with either a source or destination address listed in the MAC Filtering Configuration table will be filtered.

• Security Mode - Enable/disable the Learning mode here.

• IP Filtering Configuration - Configures IP f iltering settings. (Only avail-

able when the Switch is in multilayer mode)

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

Add MACAddress Filter

The Add MAC Address Filter screen allows you to add MAC

addresses.

• MAC Addr ess - The MAC address of a host device attached to this

Switch.

Select OK to confirm the changes. Select Cancel to cancel any changes.

Security Mode

The Security Mode menu is used to enable/disable the Learning function.

• Learning Function - Enables/disables Learning function for security

filtering.

Select Apply to make a change. Select OK to return to the previous panel. Select Cancel to cancel any change.

IP Security Filtering Configuration

Security filtering can be used to drop all the traffic from a specified IP address. (Only available when the Switch is in multilayer mode)

To add an IP address, use Add. To delete an address, highlight it with the cursor and press Enter. Select Apply to make changes. Select OK to return to the previous panel. Select Prev Page to view the previous page. Select Next Page to view the next page. To display a specific page, set the page number in the Page field and then press Apply.

Add IP Address Filter

The Add IP Address Filter screen allows you to add IP

addresses.

• IP Address - The IP address to be filtered.

Select OK to confirm the changes. Select Cancel to cancel any changes.

EtherFast® Managed 24-Port with Dual Gigabit Switch

The Network Monitor Menu provides access to port statistics, RMON statistics, address tables, VLAN registration and forwarding information, multicast groups, and subnet addresses.

Note: This screenshot shows the Network Monitor Menu displayed by a Layer 2 switch.

• Port Statistics/Statistics Menu - Displays statistics on network traffic

passing through the selected port. You have a choice of viewing port or RMON statistics.

• Layer 2 Address Table - Displays detailed statistical information for the

selected port such as packet type and frame size counters.

• Bridge Menu - The Bridge menu displays settings for the Spanning Tree

Algorithm, as well as the global bridge settings for GMRP (GARP Multicast Registration Protocol) and GVRP (GARP VLAN Registration Protocol), traffic classes priority threshold, and address aging time.

• VLAN Menu - Includes learned ports in the VLAN Dynamic Registration

Information table, and the ports that are currently forwarding VLAN traffic in the VLAN Forwarding Information table.

EtherFast®Series

IGMP Snooping Configuration

The IGMP Snooping Conf iguration allows you to set up IGMP snooping. IGMP snooping is used to monitor for any attached hosts who want to receive a specific multicast ser vice. It looks up the IP Multicast Group used for this service and adds any port that received a similar request to that group.

• IGMP Status* - If enabled, the Switch will monitor network traffic to

determine which hosts want to receive multicast traffic.

• IGMP Router Timeout - A switch port that stops receiving multicast pro-

tocol packets for this interval will be removed from the IGMP forwarding list. The range is 3-5 minutes.

• IGMP Group Timeout - The time between last spotting an IGMP Report

message for an IP multicast address on a specific por t and the Switch removing that entry from its list. The range is 3-5 minutes.

• Act as IGMP Querier* - If enabled, the Switch will query other devices

in regards to IGMP.

* These options are not available when the Switch is in multilayer mode.

Select Apply to make changes. Select OK to return to the previous panel. Select Cancel to cancel any changes.

Network Monitor Menu

EtherFast® Managed 24-Port with Dual Gigabit Switch

Port Statistics

Port Statistics display key statistics from the Interfaces Group and Ethernet-like MIBs for each port. Error statistics on the traffic passing through each port are displayed. This information can be used to identify potential problems with the Switch (such as a faulty port or unusually heavy loading). The values displayed have been accumulated since the last system reboot.

Select the required port.

Interfaces Group

• In Octets - The total number of octets received on the interface, including framing characters.

• In Non-Unicast Pkts - The number of non-unicast (that is, subnetworkbroadcast or subnetwork-multicast) packets delivered to a higher-layer protocol.

• In Discards - The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.

• IP Multicast Registration Table - Displays all the multicast groups active

on this Switch, including the multicast IP address and the corresponding VLANs. (Only displayed for Layer 2 mode. When the Switch is in multi- layer mode, IP Multicast Registration Table is available through the IP Menu.)

• IP Menu - Displays information regarding a variety of IP settings, includ-

ing subnets, ARP table, routing table, and multicast groups. (Not shown in screenshot. Only available in multilayer mode)

Select OK to return to the previous panel.

Port Statistics/Statistics Menu

The Port Statistics/Statistics Menu allows you to view the port or RMON statistics.

• Port Statistics - Displays statistics on network traffic passing through the

selected port. You have a choice of viewing port or RMON statistics.

• RMON Statistics - Displays statistics for each port from RMON group 1

(RMON groups 2, 3, and 9 can only be accessed using SNMP management software).

Select OK to return to the previous panel.

EtherFast®Series

EtherFast® Managed 24-Port with Dual Gigabit Switch

• Drop Events - The total number of events in which packets were dropped due to lack of resources.

• Octets - Number of octets passing through this port.

• Multiple Collisions - A count of successfully transmitted frames for which transmission is inhibited by more than one collision.

• Late Collisions - The number of times that a collision is detected later than 512 bit-times into the transmission of a packet.

• Carrier Sense Errors - The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame.

• Fragments - The total number of frames received that were less than 64 octets in length (excluding framing bits, but including FCS octets) and had either an FCS or alignment error.

• Jabbers - The total number of frames received that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either an FCS or alignment error.

Select Apply to make changes. Select Refresh to refresh the statistics. Select OK to return to the previous panel. Select Reset to reset a specific statistic.

Select Reset All to reset the all statistics. Select Prev Port to view the previ- ous port. Select Next Port to view the next port. To display a specific port, set the port number in the Port field and then press Apply.

EtherFast®Series

• In Errors - The number of inbound packets that contained errors pre-

venting them from being deliverable to a higher-layer protocol.

• Alignment Errors - The number of alignment errors (mis-synchronized

data packets).

• Out Octets - The total number of octets transmitted out of the interface,

including framing characters.

• Out Unicast Pkts - The total number of packets that higher-level proto-

cols requested be transmitted to a subnetwork-unicast address, including those that were discarded or not sent.

• Out Non-Unicast Pkts - The total number of packets that higher-level

protocols requested be transmitted to a non-unicast (that is, a subnetwork-broadcast or subnetwork-multicast) address, including those that were discarded or not sent.

• Out Discards - The number of outbound packets which were chosen to

be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space.

• Out Errors - The number of outbound packets that could not be trans-

mitted because of errors.

• CRC Errors - Number of Ethernet Cyclic Redundancy Check errors

detected by this device.

Ethernet-Like

• Single Collisions - The number of successfully transmitted frames for

which transmission is inhibited by exactly one collision.

• Deferred Transmissions - A count of frames for which the first trans-

mission attempt on a particular interface is delayed because the medium was busy.

• Excessive Collisions - The number of frames for which transmission

failed due to excessive collisions.

EtherFast® Managed 24-Port with Dual Gigabit Switch

• Undersize Frames - The total number of frames received that were less than 64 octets long (excluding framing bits, but including FCS octets) and were otherwise well formed.

• Oversize Frames - The total number of frames received that were longer than 1518 octets long (excluding framing bits, but including FCS octets) and were otherwise well formed.

• Fragments - The number of outbound packets that could not be transmitted because of errors.

• CRC Errors - The total number of frames received that were less than 64 octets long (excluding framing bits, but including FCS octets) and had either an FCS or alignment error.

• Jabbers - The total number of frames received that were longer than 1518 octets long (excluding framing bits, but including FCS octets) and had either an RCS or alignment error.

• Collisions- The best estimate of the total number of collisions on this Ethernet segment.

• 64 Byte Frames - The total number of frames (including bad packets) received and transmitted that were 64 octets in length (excluding framing bits, but including FCS octets).

• 65-127 Byte Frames - The total number of frames (including bad packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

• 128-255 Byte Frames - The total number of frames (including bad pacets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

• 256-511 Byte Frames - The total number of frames (including bad packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

• 512-1023 Byte Frames - The total number of frames (including bad packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

EtherFast®Series

RMON Statistics

The RMON Statistics screen provides access to a broad range of statistics, including a total count of different frame types and sizes passing through each port. The values displayed have been accumulated since the last system reboot.

Select the required port.

• Drop Events - The total number of events in which packets were

dropped due to lack of resources.

• Received Bytes - Total number of bytes of data received on the network.

This statistic can be used as a reasonable indication of Ethernet utilization.

• Received Frames - The total number of frames (bad, broadcast, and mul-

ticast) received.

• Broadcast Frames - The total number of good frames received that were

directed to the broadcast address. This does not include multicast packets.

• CRC/Alignment Errors - The number of CRC/alignment errors (FCS or

alignment errors).

EtherFast® Managed 24-Port with Dual Gigabit Switch

Bridge Menu

The Bridge Menu is used to display settings for the Spanning Tree Algorithm, as well as the global bridge settings for GMRP (GARP Multicast Registration Protocol) and GVRP (GARP VLAN Registration Protocol), traffic classes priority threshold, and address aging time.

• Spanning Tree Bridge Information - Displays a full list of STA values

used for the bridge.

• Spanning Tree Port Information - Displays a list of STA values used for

each port, including status, designated cost, designated bridge, and designated port.

Select OK to return to the previous panel.

EtherFast®Series

• 1024-1518 Byte Frames - The total number of frames (including bad

packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

• 1519-1536 Byte Frames - The total number of frames (including bad

packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits, but including FCS octets).

Select Apply to make changes. Select Refresh to refresh the statistics. Select OK to return to the previous panel. Select Reset to reset a specific statistic.

Layer 2 Address Table

The Unicast Address Table contains the MAC addresses associated with each port (that is, the source port associated with the address).

• Address - The MAC address of a node seen on this Switch.

• Port - The port whose address table includes this MAC address.

EtherFast® Managed 24-Port with Dual Gigabit Switch

• Root Cost - The path cost from the root port on this Switch to the root device.

• Root Port - The number of the port on this Switch that is closest to the root. This Switch communicates with the root device through this port. If there is not root port, then this Switch has been accepted as the root device of the Spanning Tree network.

• Configuration Changes - The number of times the Spanning Tree has been reconfigured.

• Topology Up Time - The time since the Spanning Tree was last recon- figured.

Select OK to return to the previous panel.

Spanning Tree Port Information

The STA Port Information screen displays a summary of STA information for the various ports.

• Type - Shows port type as:

100TX 10BaseT/100Base-TX 1000T 1000Base-T

EtherFast®Series

Spanning Tree Bridge Information

The STA Bridge Information screen displays a summary of STA infor mation for the overall bridge.

• Priority - Device priority is used in selecting the root device, root port,

and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device.

• Hello Time - The time interval (in seconds) at which the root device

transmits a configuration message.

• Max Age - The maximum time (in seconds) a device can wait without

receiving a configuration message before attempting to reconfigure.

• Forward Delay - The maximum time (in seconds) the root device will

wait before changing states (i.e., listening to learning to forwarding).

• Hold Time - The minimum interval between the transmission of consec-

utive Configuration BPDUs.

• Designated Root - The priority and MAC address of the device in the

Spanning Tree that this switch has accepted as the root device.

EtherFast® Managed 24-Port with Dual Gigabit Switch

VLAN Information

The VLAN Information screen offers access to information on the ports that have been automatically learned via GVRP and all the ports that have been configured by dynamic or static means to forward VLAN traffic.

• VLAN Dynamic Registration Information - Shows the ports that have

been automatically learned via GVRP.

• VLAN Forwarding Information - Shows all the ports that have been con-

figured by either dynamic or static means to forward VLAN traffic.

Select OK to return to the previous panel.

EtherFast®Series

• Status - Displays current state of this port within the Spanning Tree:

Disabled No link has been established on this port.

Otherwise, the port has been disabled by the user or has failed diagnostics.

Blocking Port received STA conf iguration messages, but

does not forward packets.

Listening Port will leave blocking state due to a topology

change, starts transmitting conf iguration messages, but does not yet forward packets.

Learning Port has transmitted configuration messages for an

interval set by the Forward Delay parameter with out receiving contradictory information. Port address is cleared, and the port begins learning addresses.

Forwarding The port forwards packets, and continues learning

addresses.

• Designated Cost - The cost for a packet to travel from this por t to the

root in the current Spanning Tree configuration. The slower the media, the higher the cost.

• Designated Bridge (ID) - The priority and MAC address of the device

through which this port must communicate to reach the root of the Spanning Tree.

• Designated Port (ID) - The priority and number of the port on the des-

ignated bridging device through which this Switch must communicate with the root of the Spanning Tree.

• Root Cost - The path cost from the root port on this Switch to the root

device.

Select OK to return to the previous panel.

EtherFast® Managed 24-Port with Dual Gigabit Switch

VLAN Forwarding Information

The VLAN Forwarding Information screen shows all the ports that have been configured by either dynamic or static means to forward VLAN traffic.

• VLAN - The ID for the VLAN.

• Port - The ports on the Switch. Read the numbers vertically; they range from 1-26. For each port number, there are two choices:

If the letter “D” is present, it indicates that the port has been configured by dynamic means.

If the letter “S” is present, it indicates that the port has been configured by static means.

EtherFast®Series

VLAN Dynamic Registration Information

The VLAN Dynamic Registration Information screen shows the ports that have been automatically learned via GVRP.

• VLAN - The ID for the VLAN.

• Port - The ports on the Switch. Read the numbers vertically; they range

from 1-26. For each port number, there are two choices:

If the letter “D” is present, it indicates that the port has been automatically learned via GVRP.

If there is no letter “D,” it indicates that the port has not been automatically learned via GVRP.

EtherFast® Managed 24-Port with Dual Gigabit Switch

IP Menu

The IP Menu displays information regarding a variety of IP settings, including subnets, ARP table, routing table, and multicast groups. (Only available in multilayer mode).

• Subnet Information - Displays settings for the IP interface of VLANs.

• ARP Table - Shows the IP-to-MAC addresses discovered by ARP.

• Routing T a ble - Shows the routes through which all recognized Ethernet

networks (and the corresponding VLAN) can be reached.

• Multicast T a ble - Displays all the multicast groups active on this Switch,

including the multicast IP address and the corresponding VLANs. (See page 80.)

Select OK to return to the previous panel.

EtherFast®Series

IP Multicast Registration Table

The IP Multicast Registration Table displays all the multicast groups active on the Switch, including the multicast IP address and the corresponding VLANs.

• VLAN - A VLAN with host members that have asked to receive the indi-

cated multicast service.

• Multicast IP - A source IP address that represents a specific multicast

service.

• (Multicast Group Port Lists) - The ports that belong to the indicated

VLAN group. Read the numbers vertically; they range from 1-26. For each port number, there are two choices:

If the letter “M” is present, it indicates that the VLAN has access to messages transmitted by that particular port.

If there is no letter “M,” then there is no access to messages trans mitted by that particular port.

• Learned by - Shows if this entr y was learned dynamically or via IGMP

Snooping. An entry is learned dynamically if a multicast packet was seen crossing the port, or via IGMP Snooping if an IGMP registration packet was seen crossing the port.

EtherFast® Managed 24-Port with Dual Gigabit Switch

ARP Table

The ARP Table shows the IP-to-MAC addresses discovered by ARP.

• IP Address - IP addresses for which ARP has resolved the physical address through a broadcast message.

• MAC Address - MAC address that maps to the corresponding IP address.

• VLAN - The VLAN g roup this host has been assigned to.

• Port - The port this host device is attached to.

Select OK to return to the previous panel. Select First Page to view the first page. Select Next Page to view the next page.

EtherFast®Series

Subnet Information

The Subnet Information screen displays information about the IP interface for VLANs configured on this Switch.

• IP Address - The IP address associated with the specified VLAN inter-

face.

• Subnet Mask - A template that identifies the address bits in the host

address used for routing to specific subnets.

• VLAN - The VLAN associated with this IP interf ace.

• (Ports) - The ports on the Switch.

Read the numbers vertically; they range from 1-26. For each port number, there are two choices: “S” or “P.” Use the spacebar to scroll through the choices.

The letter “S” indicates a static entry.

The letter “P” indicates the port is a static entry, and the port’s PVID is set to this VLAN ID.

EtherFast® Managed 24-Port with Dual Gigabit Switch

• Protocol - How the route was learned.

Local: Manually configured Mgmt: Set via SNMP ICMP: Obtained via ICMP redirect RIP: Learned via RIP protocol Other: Learned by some other method

Multicast Table Menu

The Multicast Table Menu offers a variety of multicasting settings.

• Multicast Registration Table - Displays all the multicast groups active on the Switch, including the multicast IP address and the corresponding VLANs. (See page 80.)

• IGMP Cache - Cache for IGMP.

EtherFast®Series

Routing Table

The Routing Table lists the routes through which all recognized Ethernet networks (and corresponding VLAN) can be reached.

• Destination Network - A destination network, subnet, or host.

• Destination Mask - The subnet mask that specifies the bits to match.

• VLAN - The VLAN within which the gateway or destination address

resides.

• Next Hop - The IP address of the router at the next hop.

• Type - The IP route type for the destination network.

Direct: A directly connected subnetwork Indirect: A remote IP subnetwork or host address Myself: A switch IP address on a specif ic IP subnetwork Bcast: A subnetwork broadcast address Mcast: An IP multicast address Invalid: An illegal IP address to be f iltered

EtherFast® Managed 24-Port with Dual Gigabit Switch

• Expire - The time remaining before this entry will be aged out.

(The default is 260 seconds.)

• V1 Timer - The time remaining until the Switch assumes that there

are no longer any IGMP Version 1 members on the IP subnet attached to this interface. (The default is 400 seconds.) If the Switch receives an IGMP Version 1 Membership Report, it sets a timer to note that there are Version 1 hosts present which are members of the group for which it heard the report. If there are Version 1 hosts present for a particular group, the Switch will ignore any Leave Group messages that it receives for that group.

EtherFast®Series

• Multicast Forwarding Cache Table - Cache for multicast forwarding.

• DVMRP Routing Table - Routing table for Distance-Vector Multicast

Routing Protocol.

• DVMRP Neighbor Table - Table of neighbors for Distance-Vector

Multicast Routing Protocol.

Select OK to return to the previous panel.

IGMP Cache

The IGMP Cache screen shows the settings for the IGMP cache.

• Group Addr ess - An IP multicast group address with subscribers

directly attached or downstream from this Switch.

• Intf - The IP interface on this Switch that has received traffic

directed to the IP multicast group address.

• Reporter - IP address of the source of the last membership report

received for this multicast group on this interface. If no membership report has been received, this object has the value 0.0.0.0.

• Up Time - The time elapsed since this entry was created.

EtherFast® Managed 24-Port with Dual Gigabit Switch

DVMRP Routing Table

The DVMRP Routing Table shows the routes for the DistanceVector Multicast Routing Protocol.

• Source Addr ess - The IP subnetwork at the root of the multicast

delivery tree. This subnetwork contains a known multicast source.

• Mask - Subnet mask that is used for the source address. This mask

identifies the host address bits used for routing to specific subnets.

• Upstream Nbr - The IP address of the network device immediately

upstream for this multicast delivery tree.

• Interface - The IP interface on this Switch that connects to the

upstream neighbor.

• Metric - The metric for this interface used to calculate distance

vectors.

• Up Time - The time elapsed since this entry was created.

EtherFast®Series

Multicast Forwarding Cache

The Multicast Forwarding Cache displays the settings for the cache.

• Group Addr ess - An IP multicast group address with subscribers

directly attached or downstream from this Switch.

• Source Addr ess - The IP subnetwork at the root of the multicast

delivery tree. This subnetwork contains a known multicast source.

• Mask - Subnet mask that is used for the source address. This mask

identifies the host address bits used for routing to specific subnets.

• Upstream Nbr - The IP address of the network device immediately

upstream for this group.

• Protocol - The multicast routing protocol associated with this

entry.

• Up Time - The time elapsed since this entry was created.

EtherFast® Managed 24-Port with Dual Gigabit Switch

The System Restart Menu resets the management agent.

• Reload Factory Defaults- Reloads the factory defaults.

• [Restart] - Restarts the Switch.

Note: When restarting the system, it will always run the Power-On SelfTest. It will also retain all system infor mation, unless you select to reload the factory defaults.

Select Restart to restart the Switch. Select Cancel to cancel the system restart.

EtherFast®Series

DVMRP Neighbor Table

The DVMRP Neighbor Table shows information about the neighbors used for the Distance-Vector Multicast Routing Protocol.

• Interface - The IP interface on this Switch that connects to the

upstream neighbor.

• Neighbor Address - The IP address of the network device

immediately upstream for this multicast delivery tree.

• UpTime- The time since this device last became a DVMRP neigh-

bor to this Switch.

• ExpireTime - The time remaining before this entr y will be aged

out.

• Ver - The neighboring router’s DVMRP version number.

• RcvRoute - The total number of routes received in valid DVMRP

packets from this neighbor. This can be used to diagnose problems such as unicast route injection, as well as giving an indication of the level of DVMRP route exchange activity.

System Restart Menu

EtherFast® Managed 24-Port with Dual Gigabit Switch

Troubleshooting

This section provides possible solutions to problems regarding the installation and operation of the Managed 24-Port with Dual Gigabit Switch. If your situation is described here, the problem should be solved by applying the corresponding solution. If you can’t find an answer here, check the Linksys website at www.linksys.com.

1. I can’t connect to the Managed 24-Port with Dual Gigabit Switch using the telnet,Web browser,or SNMP software.

• Be sure you have configured the agent with a valid IP address, subnet mask, and default gateway (Layer 2).

• Check that you have a valid network connection to the Switch and that the port you are using has not been disabled.

• Check the network cabling between the management station and the Switch.

• If you cannot connect using telnet, there may already be four active sessions. Try connecting again at a later time.

2. I forgot or lost the password.

• Reinstall the switch firmware as described in the Appendix. Otherwise, contact Linksys Technical Support for help.

EtherFast®Series

The Exit command under the Main Menu is used to exit the configuration program and terminate communications with the Switch for the current session.

If you need to return to the program, press Enter repeatedly.

Exit

Common Problems and Solutions

EtherFast® Managed 24-Port with Dual Gigabit Switch

Console Port to 25-Pin DTE Port on PC

EtherFast®Series

3. I can’t access the on-board configuration program via a serial port configuration.

• Be sure you have set the terminal emulator program to VT100 compatible, 8 data bits, 1 stop bit, no parity, and 19200 bps.

• Check that the null-modem serial cable conforms to the pin-out connections provided below.

DB-9 Port Pin Assignments

Console Port to 9-Pin COM Port on PC

Console Port to 25-Pin DCE Port on Modem

EtherFast® Managed 24-Port with Dual Gigabit Switch

3. Change your baud rate to the selected value, and press Enter to enable

download. From the terminal emulation program, select the file you want to download, set the protocol to XModem, and then initialize downloading.

Note: If you use Windows Hyper ter minal, disconnect it. Set the baud rate, and reconnect it.

Note: The download file should be a binary f ile or an image file; otherwise, the agent will not accept it.

4. After the file has been downloaded, the console screen will display infor-

mation similar to that shown below. Press Enter to download to permanent memory, and change the baud rate back to 19200. Press Enter to start decompressing the new fir mware, and then press Enter to open the Logon screen.

Your firmware has now been updated.

EtherFast®Series

Appendix

You can upgrade system f ir mware by connecting your computer to the serial port on the Switch and using a console interface package that supports the XModem protocol.

1. Restar t the system by using the Restart System command, or by pulling out the power cord to reset the power, waiting five seconds, and plugging it back in.

2. When the system initialization screen appears as shown below, press “D” to download system firmware, and then indicate the code type (<r> Runtime image or <d> Diagnostic image).

Upgrading Firmware via the Serial Port

POST Version V2.55.A03 8/18/2000

------ Power-On SElf Test (POST) ------

Int. Loopback Testing SCC2 UART Channel ...PASS Testing the System SDRAM ...PASS Int. Loopback Testing _____UART Channel ...PASS Int. Loopback Testing _____UART Channel ...PASS CPU Self Test ...PASS FlashROM CheckSum Test ...PASS

!!! If you want to download image file, Please press <D>

to download: !!! Download Runtime image, press <r> !!! Download Diagnostic image, press <d> !!! Clear the system parameter block, press <c>r Please input the Baud Rate as following:

Press 1: Baud Rate = 9600 Press 2: Baud Rate = 19200 Press 3: Baud Rate = 38400 Press 4: Baud Rate = 57600 Press 5: Baud Rate = 115200

Select a number and then press <ENTER> !!! 5 Please change local console BaudRate to exact rate and press <ENTER>!!!

XModem Download to 0x00400020: ... SUCCESS !

(P)ermanent or (T)emporary Download: [P]

Update RunTime Image at 0x03040000 ... ... SUCCESS !

Change to original Baud Rate and Press <ENTER> to Run Application !!!

Decompress now...... !!!

run-time code starting now. !!! Starting System ...

MAINBOARD OCTOPUS0 RAMBIST TEST ...... PASS!

MAINBOARD OCTOPUS1 RAMBIST TEST ...... PASS!

MAINBOARD OCTOPUS2 RAMBIST TEST ...... PASS!

MAINBOARD OCTOPUS3 RAMBIST TEST ...... PASS!

MAINBOARD DOLPHIN RAMBIST TEST ...... PASS!

MAINBOARD STARFISH RAMBIST TEST ...... PASS!

Press <Enter> to start UI

EtherFast® Managed 24-Port with Dual Gigabit Switch

EtherFast®Series

“categories” (the singular is commonly referred to as “CAT”) of twisted pair cabling systems (wires, junctions, and connectors) in terms of the data rates that they can sustain. CAT 3 cable has a maximum throughput of 16Mbps and is usually utilized for 10BaseT networks.

CAT 5 - ANSI/EIA (American National Standards Institute/Electronic Industries Association) Standard 568 is one of several standards that specify “categories” (the singular is commonly referred to as “CAT”) of twisted pair cabling systems (wires, junctions, and connectors) in terms of the data rates that they can sustain. CAT 5 cable has a maximum throughput of 100Mbps and is usually utilized for 100BaseTX networks.

CAT 5e - The additional cabling performance parameters of return loss and farend crosstalk (FEXT) specified for 1000Base-T and not specified for 10Base-T and 100Base-TX are related to differences in the signaling implementation. 10Base-T and 100Base-TX signaling is unidirectional—signals are transmitted in one direction on a single wire pair. In contrast, Gigabit Ethernet is bi-directional—signals are transmitted simultaneously in both directions on the same wire pair; that is, both the transmit and receive pair occupy the same wire pair.

Data Packet - One frame in a packet-switched message. Most data communications is based on dividing the transmitted message into packets. F or e xample, an Ethernet packet can be from 64 to 1518 bytes in length.

DHCP (Dynamic Host Configuration Protocol) - A protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization’s network. Using the Internet’s set of protocol (TCP/IP), each machine that can connect to the Internet needs a unique IP address. When an organization sets up its computer users with a connection to the Internet, an IP address must be assigned to each machine. Without DHCP, the IP address must be entered manually at each computer, and, if computers move to another location in another part of the network, a new IP address must be entered. DHCP lets a network administrator supervise and distribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network. DHCP uses the concept of a “lease” or amount of time that a given IP address will be valid for a computer. The lease time can vary depending on how long a user is likely to require the Internet connection at a particular location. It’s especially useful in education and other environments where users change frequently. Using very short leases, DHCP can dynamically reconfigure networks in which there are more computers than there are available IP addresses.

DHCP supports static addresses for computers containing Web servers that need a permanent IP address.

Glossary

10BaseT - An Ethernet standard that uses twisted wire pairs.

100BaseTX - IEEE physical layer specification for 100Mbps over two pairs of

Category 5 UTP wire.

1000BASE-T - Provides half-duplex (CSMA/CD) and full-duplex 1000Mbps Ethernet service over Category 5e links as defined by ANSI/TIA/EIA-568-A. Topology rules for 1000Base-T are the same as those used for 100Base-TX. Category 5e link lengths are limited to 100 meters by the ANSI/TIA/EIA-568A cabling standard. Only one CSMA/CD repeater will be allowed in a collision domain.

Adapter - Printed circuit board that plugs into a PC to add capabilities or connectivity to a PC. In a networked environment, a network interface card (NIC) is the typical adapter that allows the PC or server to connect to the intranet and/or Internet.

ARP (Address Resolution Protocol) - A TCP/IP protocol used to figure out a host’s Ethernet address from its Internet address.

Auto-negotiate - To automatically determine the correct settings. The term is often used with communications and networking. For example, Ethernet 10/100 cards, hubs, and switches can determine the highest speed of the node they are connected to and adjust their transmission rate accordingly.

Backbone - The part of a network that connects most of the systems and networks together and handles the most data.

Bandwidth - The transmission capacity of a given facility, in terms of how much data the facility can transmit in a fixed amount of time; expressed in bits per second (bps).

BOOTP (BOOTstrap Protocol) - A TCP/IP protocol that lets a device connected to the network be automatically configured and booted up. An IP address is automatically assigned for a specific length of time.

CAT 3 - ANSI/EIA (American National Standards Institute/Electronic Industries Association) Standard 568 is one of several standards that specify

EtherFast® Managed 24-Port with Dual Gigabit Switch

IEEE - The Institute of Electrical and Electronics Engineers. The IEEE describes itself as “the world’s largest technical professional society—promoting the development and application of electrotechnology and allied sciences for the benefit of humanity, the advancement of the profession, and the wellbeing of our members.”

The IEEE fosters the development of standards that often become national and international standards. The organization publishes a number of journals, has many local chapters, and has several lar ge societies in special areas, such as the IEEE Computer Society.

IGMP (Inter net Group Management Protocol) - A multicast host registration protocol that allows any host to inform its local router that it wants to receive transmissions addressed to a specific multicast g roup.

LAN - A local area network (LAN) is a group of computers and associated devices that share a common communications line and typically share the resources of a single processor or server within a small geographic area (for example, within an office building).

Latency - The time delay between w hen the first bit of a packet is received and the last bit is forwarded.

Layer 2 - Data Link layer in the ISO 7-Layer Data Communications Protocol. This is directly related to the hardware interface for network devices and passes traffic based on MAC addresses.

Layer 3 - Network layer in the ISO 7-Layer Data Communications Protocol. This layer handles the routing functions for data moving from one open system to another.

MAC Addr ess - The MAC (Media Access Control) address is your computer’s unique hardware number.

Mbps (MegaBits Per Second) - One million bits per second; unit of measurement for data transmission.

Multicast Routing Protocol - A routing protocol that supports multicast packets (one to many).

Multicasting - Sends data to a group of nodes instead of a single destination.

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DVMRP (Distance-Vector Multicast Routing Protocol) - Used for routing multicast messages through the Internet.

Dynamic Routing - The ability for a router to forward data via a different route based on the current conditions of the communications circuits. For example, it can adjust for overloaded traffic or failing lines and is much more flexible than static routing, which uses a fixed forwarding path.

Ethernet - IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium. Has a transfer rate of 10Mbps. Forms the underlying transport vehicle used by several upper-level protocols, including TCP/IP and XNS.

Fast Ethernet - A 100 Mbps technology based on the 10Base-T Ethernet CSMA/CD network access method.

Full Duplex - The ability of a device or line to transmit data simultaneously in both directions.

GARP (General Attributes Registration Protocol) - A standard for registering or deregistering client attributes for client services within a bridged LAN.

GMRP (GARP Multicast Registration Protocol) - Allows network devices to register endstations with multicast groups. GMRP requires that any participating network devices or endstations comply with the IEEE 802.1p standard.

GVRP (GARP VLAN Registration Protocol) - Defines a way for switches to exchange VLAN information in order to register VLAN members on ports across the network.

Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a time.

Hardware - Hardware is the physical aspect of computers, telecommunications, and other information technology devices. The term arose as a way to distinguish the “box” and the electronic circuitry and components of a computer from the program you put in it to make it do things. The pro gram came to be known as the software.

Hub - The device that serves as the central location for attaching wires from workstations. Can be passive, where there is no amplification of the signals; or active, where the hubs are used like repeaters to provide an extension of the cable that connects to a workstation.

EtherFast® Managed 24-Port with Dual Gigabit Switch

STP (Spanning Tree Protocol) - A technology that checks your network for any loops. A loop can often occur in complicated or back-up linked network systems. Spanning-tree detects and directs data along the shortest path, maximizing the performance and efficiency of the network.

Static Routing - Forwarding data in a network via a fixed path. Static routing cannot adjust to changing line conditions as can dynamic routing.

Subnet Mask - The method used for splitting IP networks into a series of subgroups, or subnets. The mask is a binary pattern that is matched up with the IP address to turn part of the host ID address field into a f ield for subnets.

TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability.

Throughput- The amount of data moved successfully from one place to another in a given time period.

TX Rate - Transmission Rate.

Unicast Routing Protocol - A routing protocol that does not support multicast.

UTP - Unshielded twisted pair is the most common kind of copper telephone

wiring. Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other. Each signal on twisted pair requires both wires. Since some telephone sets or desktop locations require multiple connections, twisted pair is sometimes installed in two or more pairs, all within a single cable.

VLAN (Virtual LAN) - A logical association that allows users to communicate as if they were physically connected to a single LAN, independent of the actual physical configuration of the network.

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Network - A system that transmits any combination of voice, video, and/or data between users.

NIC (Network Interface Card) - A board installed in a computer system, usually a PC, to pro vide netw ork communication capabilities to and from that computer system. Also called an adapter.

Port - A pathway into and out of the computer or a network device such as a switch or router. For example, the serial and parallel ports on a personal computer are external sockets for plugging in communications lines, modems, and printers.

Port Trunk - Def ines a network link aggregation and trunking method, which specifies how to create a single high-speed logical link that combines several lower-speed physical links.

RIP (Routing Information Protocol) - A simple routing protocol that is part of the TCP/IP protocol suite. It determines a route based on the smallest hop count between source and destination. RIP is a distance vector protocol that routinely broadcasts routing information to its neighboring routers and is known to waste bandwidth. AppleTalk, DECnet, TCP/IP, NetWare, and VINES all use incompatible versions of RIP.

RJ-45 (Registered Jack-45) - A connector similar to a telephone connector that holds up to eight wires, used for connecting Ethernet devices.

RMON (Remote MONitoring) - RMON provides comprehensive network monitoring capabilities. It eliminates the polling required in standard SNMP, and can set alarms on a variety of traffic conditions, including specif ic error types.

SNMP (Simple Network Management Protocol)- A widel y used netw ork monitoring and control protocol. Data is passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device (hub, router, bridge, etc.) to the workstation console used to oversee the network. The agents return information contained in a MIB (Management Information Base), which is a data structure that def ines what is obtainable from the device and what can be controlled (turned off, on, etc.).

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Warranty Information

BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCT’S PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE.

IN NO EVENT SHALL LINKSYS’LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY PRODUCT.

LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PROCESSING AND RECEIVING YOUR REPLACEMENT. LINKSYS PAYS FOR UPS GROUND ONLY. ALL CUSTOMERS LOCATED OUTSIDE OF THE UNITED STATES OF AMERICA AND CANADA SHALL BE HELD RESPONSIBLE FOR SHIPPING AND HANDLING CHARGES. PLEASE CALL LINKSYS FOR MORE DETAILS.

Specifications

Model Number EF24G2M Standards IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q,

IEEE 802.3, IEEE 802.3ab, IEEE 802.3u,

IEEE 802.3x Protocol CSMA/CD Ports 24 10/100Base-TX RJ-45 Ports

2 1000Base-T RJ-45 Ports

1 RS-232 DB-9 Port Speed Per Port (Mbps)

10/100 Ports 10 or 100 (Half Duplex)

20 or 200 (Full Duplex)

1000 Ports 1000 (Half Duplex)

2000 (Full Duplex) MAC Addresses 32k MAC Addresses 64k Max Frame Size 1522 Bytes Buffer Memory 4MB Cabling Type UTP Category 5 or Better (10/100)

UTP Category 5e or Better (1000) LEDs Power,

FD/Col (per Port),

Link/Act (per Port)

Dimensions 16.93" x 13.78" x 1.75"

(430mm x 350mm x 44.4mm) Unit Weight 8.38 lbs. (3.8kg) Power Input 100-240V AC, 50-60Hz Power Consumption 60 watts Certif ications FCC Class A Operating Temp. 0° C to 40° C (32° F to 104° F) Storage Temp. -10° C to 70° C (-14° F to 158° F) Operating Humidity 10 % to 95 % Non-Condensing Storage Humidity 10 % to 95 % Non-Condensing

Environmental

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Contact Information

For help with the installation or operation of this product, contact Linksys Customer Support at one of the phone numbers or Internet addresses below.

Sales Information 800-546-5797 (LINKSYS) Tech Support 888-793-5932 RMA Issues 949-261-1288 Fax 949-261-8868 Email support@linksys.com Web http://www.linksys.com FTP Site ftp.linksys.com

Printed in the USA.

http://www.linksys.com

Linksys Etherfast User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual