Accton Technology CheetahSwitch Workgroup, 4508 User Manual

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CheetahSwitch Workgroup-4508 Management Guide

Management Guide

CheetaSwitch Workgroup-4508

Intelligent Gigabit Ethernet Switch with 8 1000BASE-SX (SC) Ports

No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Accton Technology Corporation.

Accton makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability, quality, or fitness for any particular purpose. The information in this document is subject to change without notice. Accton reserves the right to make revisions to this publication without obligation to notify any person or entity of any such changes.

International Headquarters USA Headquarters

No. 1 Creation Road III, 6 Hughes Science-based Industrial Park Irvine, CA 92618 Hsinchu 300, Taiwan, R.O.C. Phone Numbers Phone: 886-3-5770-270 Sales: 800-926-9288 FAX: 886-3-5770-267 Support: 888-398-4101 or 949-707-4847 Internet: support@accton.com.tw RMA: 800-762-4968

FAX: 949-707-2460

Accton is a trademark of Accton Technology Corporation. Other trademarks or brand names mentioned herein are trademarks or registered trademarks of their respective companies.

ES4508 E022000-R01 150065-102

Chapter 1: Managing the Switch 1-1

Configuration Options 1-1 Making Connections for System Configuration 1-2

Onsite Connection 1-2 Modem Connection 1-2 Telnet Connection 1-3 In-Band Network Connection 1-3

Chapter 2: Using the System Configuration Program 2-1

Main Menu 2-2 System Information Menu 2-4

Displaying System Information 2-4 Displaying Version Information 2-5

Management Setup Menu 2-5

Changing the Network Configuration 2-6

IP Configuration 2-7 IP Connectivity Test (Ping) 2-8 Access Host Configuration 2-8

HTTP Configuration 2-9 Configuring the Serial Port 2-10 Assigning SNMP Parameters 2-11

Configuring Community Names 2-12

Configuring IP Trap Managers 2-12 Console Login Configuration 2-13 Downloading System Software 2-14

Using TFTP Protocol to Download Over the Network 2-14

Configuring the Switch 2-15

Configuring Port Parameters 2-16 Viewing the Current Port Configuration 2-17 Using the Spanning Tree Algorithm 2-17

Configuring Bridge STA 2-18

Configuring STA for Ports 2-19 Viewing the Current Spanning Tree Configuration 2-20

Displaying the Current Bridge STA 2-20

Displaying the Current STA for Ports 2-21 Using a Mirror Port for Analysis 2-23 IGMP Multicast Filtering 2-23

Configuring IGMP 2-24 Broadcast Storm Control 2-25 Configuring Bridge MIB Extensions 2-26

Configuring Traffic Classes 2-27

Port Priority Configuration 2-27

802.1p Port Traffic Class Information 2-28

Configuring Virtual LANs 2-29

802.1Q VLAN Base Information 2-29

802.1Q VLAN Current Table Information 2-30

802.1Q VLAN Static Table Configuration 2-31

802.1Q VLAN Port Configuration 2-32

Monitoring the Switch 2-33

Displaying Port Statistics 2-34

Displaying RMON Statistics 2-35

Using the Address Table 2-37 Displaying the IP Multicast Registration Table 2-38 Configuring Static Unicast Addresses 2-39

Resetting the System 2-40 Logging Off the System 2-40

Chapter 3: Using the Web Agent 3-1

Navigating the Web Browser Interface 3-1

Home Page 3-2

Panel Display 3-3

Console Configuration 3-3

Main Menu 3-4 System Information 3-5 Switch Information 3-6

Main Board 3-6

Network Configuration 3-7

IP Configuration 3-7 Access Host 3-8

SNMP Configuration 3-8

SNMP Administration Enable 3-8 SNMP Community 3-9 Trap Managers 3-9

Security Configuration 3-10

Change Password 3-10

Firmware Upgrade Options 3-10

Web Upload Management 3-10 TFTP Download Management 3-11

Address Table Configuration 3-12 STA (Spanning Tree Algorithm) 3-13

Spanning Tree Information 3-13 Spanning Tree Configuration 3-15 STA Port Configuration 3-16

Configuring Bridge MIB Extensions 3-17

Bridge Capability 3-17

Bridge Settings 3-18

Priority 3-18

Port Priority Configuration 3-18 Port Traffic Class Information 3-19

Configuring VLANs 3-20

VLAN Basic Information 3-20 VLAN Current Table 3-21 VLAN Static List 3-22 VLAN Static Table 3-22 VLAN Static Membership by Port 3-23 VLAN Port Configuration 3-24

IGMP Multicast Filtering 3-25

Configuring IGMP 3-25 IP Multicast Registration Table 3-26

Port Menus 3-26

Port Information 3-26 Port Configuration 3-27

Port Mirroring Configuration 3-28 Port Statistics 3-28

Etherlike Statistics 3-28 RMON Statistics 3-30

Broadcast Storm Control 3-32

Chapter 4: Advanced Topics 4-1

Spanning Tree Algorithm 4-1 Virtual LANs 4-2

Assigning Ports to VLANs 4-2 VLAN Classification 4-3 Port Overlapping 4-3 Forwarding Tagged/Untagged Frames 4-3 Forwarding Traffic with Unknown VLAN Tags 4-4

Class-of-Service (CoS) Support 4-4 IGMP Snooping and IP Multicast Filtering 4-4 SNMP Management Software 4-5 Remote Monitoring 4-5

Appendix A: Troubleshooting A-1

Console Connection A-1 In-Band Connection A-1 Upgrading Firmware via the Serial Port A-1

Appendix B: Pin Assignments B-1

DB9 Serial Port Pin Description B-1

DB9 Port Pin Assignments B-1 Connection from Switch’s Serial Port to PC’s 9-Pin COM Port B-1 Connection from Switch's Serial Port to Modem's 25-Pin DCE Port B-2 Connection from Switch's Serial Port to PC's 25-Pin DTE Port B-2

iii

Chapter 1: Managing the Switch

Configuration Options

The CheetahSwitch Workgroup-4508 provides a menu-driven system configuration program that can be accessed through a direct console connection or modem connection to the serial port on the switch’s rear panel (out-of-band), or by a Telnet connection over the network (in-band).

The switch also includes an embedded HTTP Web agent. This Web agent can be accessed using a standard Web browser from any computer attached to the network.

The switch’s management agent is based on SNMP (Simple Network Management Protocol). This SNMP agent allows the switch to be managed from any PC on the network using in-band management software, such as Accton’s AccView/Open.

Once you have connected a terminal or PC to the serial port on the switch, you can perform the following tasks:

• Enable/disable any port

• Set the communication mode for any port

• Configure SNMP parameters

• Configure the switch to join a Spanning Tree

• Add ports to VLAN groups

• Mirror data from a target port to an analysis port

• Display system information or statistics

• Download system firmware

• Restart the system

1-1

CheetahSwitch Workgroup-4508

Making Connections for System Configuration

The switch includes a menu-driven configuration program. The ASCII interface to this program can be accessed by making a direct connection to the serial port on the rear panel, or by a Telnet connection to the switch over the network.

This section describes how to access the menu-driven configuration program via:

• Onsite connection

A terminal or workstation connected to the serial port on the rear panel

• Modem connection

A workstation connected to the serial port of a remote switch via modems

• Telnet connection

A workstation connected to a remote switch via a Telnet connection

It also describes how to access the embedded Web agent over the network using any standard browser, or with AccView network management software or other thirdparty management software.

Onsite Connection

Attach a VT100 compatible terminal or a PC running a terminal emulation program to the serial port on the switch’s rear panel. Use the null-modem cable provided with this package, or use a null modem connection that complies with the wiring assignments shown in the back of this guide.

When attaching to a PC, set terminal emulation type to VT100, specify the port used by your PC (i.e., COM 1~4), and then set communications to 8 data bits, 1 stop bit, no parity, and 19200 bps (for initial configuration). Also be sure to set both handshaking and flow control to “none.”

Modem Connection

Configure the Switch Site: Connect the switch’s DB-9 serial port to the

modem’s serial port using standard cabling. For most modems, which use a 25-pin port, you will have to provide an RS-232 cable with a 9-pin connector on one end and a 25-pin connector on the other end. You do not have to set the modem at the switch’s site, because the switch will automatically configure it to auto-answer mode.

Configure the Remote Site: At the remote site, connect the PC’s COM port (COM 1~4) to the modem’s serial port. Set terminal emulation type to VT100, specify the port used by your PC (i.e., COM 1~4), and then set communications to 8 data bits, 1 stop bit, no parity, 19200 bps, and no flow control.

1-2

Management Guide

Telnet Connection

Prior to accessing the switch via an in-band Telnet connection, you must first configure it with a valid IP address, subnet mask, and default gateway using an out-of-band connection or BOOTP protocol. After configuring the switch’s IP parameters, you can access the on-board configuration program from anywhere within the attached network.

Note: Up to four Telnet sessions are supported.

In-Band Network Connection

The on-board configuration program can be accessed using Telnet or a Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above) from any computer attached to the network. It can also be managed from a network computer using management software such as AccView.

Notes: 1. Prior to accessing the switch via a direct network connection, first

configure it with a valid IP address, subnet mask, and default gateway using an out-of-band connection or BOOTP protocol.

2. The on-board 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. Accton provides a Windows-based SNMP software package called AccView/Open. If you require this software, please contact your Accton distributor. Also note that AccView’s CheetahSwitch Manager module can be easily integrated into most third-party management platforms.

1-3

CheetahSwitch Workgroup-4508

1-4

Chapter 2: Using the System Configuration Program

Once a direct connection to the serial port or a Telnet connection is established, the login screen for the on-board configuration program appears as shown below.

AAAAAAA AAAAAAAAAA AAAAA AAAA AAAAA AAAA AAAAA AAAA CCCCCCC CCCCCC TTTTTTTTTT OOOOOO NN NN AAAAA AAAA CC CC CC CC TT OO OO NNN NN AAAAA AAAA CC CC TT OO OO NN NN NN AAAAA AAAA CC CC TT OO OO NN NN NN AAAAA AAAAAAAA CC CC CC CC TT OO OO NN NNN AAAAA AAAAAAAAA CCCCCCC CCCCCCC TT OOOOOO NN NN

v01.00.01 01-12-2000 (c) Copyright Accton Technology Corp.

User Name : admin Password : **********

CheetahSwitch Workgroup - 4508

If this is your first time to log into the configuration program, then the default user names are “admin” and “guest,” and the passwords are null. The administrator has Read/Write access to all configuration parameters and statistics, while the guest has Read Only access. To open the Main Menu, type “admin” for the user name and press <Enter> for the password.

You should define a password, record it, and put it in a safe place. If you have not already done so, select Security Configuration and enter a password. Note that passwords can consist of up to 15 alphanumeric characters and are not case sensitive.

Configuration parameters are described in the following section.

Note: Based on the default configuration, a user is allowed three attempts to enter the

correct password; on the third failed attempt the current connection is terminated.

2-1

CheetahSwitch Workgroup-4508

Main Menu

With the system configuration program you can define system parameters, manage the switch and all its ports, or monitor network conditions. The figure below of the Main Menu and the following table briefly describe the selections available from this program.

Note: Options for the currently selected item are displayed in the highlighted area at

the bottom of the interface screen.

CheetahSwitch Workgroup - 4508

Main Menu

System Information Menu...

Management Setup Menu...

Device Control Menu...

Network Monitor Menu...

System Restart Menu...

Exit

Use <TAB> or arrow keys to move. <Enter> to select.

Parameter Description

System Information Menu

System Information Provides basic system description, including contact information. Switch Information Shows hardware/firmware version numbers, and power status.

Management Setup Menu

Network Configuration Includes IP setup, Ping facility, Access Host configuration, HTTP (Web

Serial Port Configuration Sets communication parameters for the serial port, including

SNMP Configuration Enables/disables SNMP access, activates traps; and configures

Console Login Configuration Sets user names and passwords for system access, as well as the

TFTP Download Downloads new version of firmware to update your system (in-band).

Device Control Menu

Port Configuration Enables any port, enables/disables flow control, and sets

agent) setup, Telnet configuration, and MAC address.

management mode, baud rate, console time-out, and screen data refresh interval.

communities and trap managers.

invalid password threshold and lockout time.

communication mode to auto-negotiation or full duplex.

2-2

Management Guide

Parameter Description

Port Information Displays operational status, including link state, flow control method,

Spanning Tree Configuration Enables Spanning Tree Algorithm; also sets parameters for hello time,

Spanning Tree Information Displays full listing of parameters for the Spanning Tree Algorithm. Mirror Port Configuration Sets the source and target ports for mirroring.

IGMP Configuration Configures IGMP multicast filtering. Broadcast Storm Control Sets the broadcast-rate threshold at which broadcast packets are

Extended Bridge Configuration Displays/configures extended bridge capabilities provided by this

802.1P Configuration Configures default port priorities and queue assignments.

802.1Q VLAN Base Displays basic VLAN information, such as VLAN version number,

Information maximum VLAN ID, maximum VLANs supported, and the current

802.1Q VLAN Current Displays VLAN groups and port members. Table Information

802.1Q VLAN Static Configures VLAN groups via static assignments, including setting port Table Configuration members, or restricting ports from being dynamically added to a port

802.1Q VLAN Displays/configures port-specific VLAN settings, including PVID, Port Configuration ingress filtering, and GVRP.

Network Monitor Menu

Port Statistics Displays statistics on network traffic passing through the selected port.

RMON Statistics Displays detailed statistical information for the selected port such as

Unicast Address Table Provides full address listing, as well as search and clear functions.

IP Multicast Registration Table Displays all the multicast groups active on this switch, including

Static Unicast Address Table Used to manually configure host MAC addresses in the unicast table. Configuration

System Restart Restarts system with options to use POST, or to retain factory defaults,

Exit Exits the configuration program.

speed and duplex mode.

maximum message age, switch priority, and forward delay; as well as port priority, path cost and Fast STA mode.

discarded.

switch.

number of VLANs configured.

by the GVRP protocol.

packet type and frame size counters.

multicast IP addresses and corresponding VLAN IDs.

IP settings, or user authentication settings.

2-3

CheetahSwitch Workgroup-4508

System Information Menu

Use the System Information Menu to display a basic description of the switch, including contact information, and hardware/firmware versions.

CheetahSwitch Workgroup - 4508

System Information Menu

System Information ...

Switch Information ...

Use <TAB> or arrow keys to move. <Enter> to select.

<OK>

Displaying System Information

Use the System Information screen to display descriptive information about the switch, or for quick system identification as shown in the following figure and table.

CheetahSwitch Workgroup - 4508

System Information

System Description : Gigabit Ethernet Switch ES4508

System Object ID : 1.3.6.1.4.1.259.6.17

System Up Time : 48067 (0 day, 1 hr, 2min, 34 sec)

System Name :

System Contact :

System Location :

Use <TAB> or arrow keys to move. other keys to make changes.

Parameter Description

System Description System hardware description. System Object ID MIB II object identifier for switch’s network management subsystem.

System Up Time Length of time the current management agent has been running.

(Note that the first value is 1/100 seconds.) System Name

System Contact System Location

Name assigned to the switch system.

Contact person for the system.

Specifies the area or location where the system resides.

1: Maximum string length is 255, but the screen only displays 45 characters. You can use the arrow keys

to browse the whole string.

2-4

Management Guide

Displaying Version Information

Use the Switch Information screen to display hardware/firmware version numbers, as well as the power status.

CheetahSwitch Workgroup - 4508

Switch Information

Hardware Version : V1.0 POST ROM Version : V01.00.00 Firmware Version : V01.00.01 Serial Number : Port Number : 8 Internal Power Status : Redundant Power Status :

Use <TAB> or arrow keys to move. <Enter> to select.

<OK>

Parameter Description

Hardware Version Hardware version of the main board.

POST ROM Version Power-On Self-Test version number. Firmware Version System firmware version in ROM.

Serial Number

Serial number of the main board. Port Number Number of ports.

Internal Power Status Redundant Power Status

Indicates if the primary power is active or inactive.

Indicates if the redundant power is active or inactive.

1: These parameters are not supported by the current hardware version.

Management Setup Menu

After initially logging onto the system, adjust the communication parameters for your console to ensure a reliable connection (Console Configuration menu). Specify the Ethernet and IP addresses for the SNMP agent (IP Configuration menu), and then set the Administrator and User passwords (Console Login Configuration menu). Remember to record them in a safe place. Also set the community string which controls access to the on-board SNMP agent via in-band management software (SNMP Configuration menu). The items provided by the Management Setup Menu are described in the following sections.

2-5

CheetahSwitch Workgroup-4508

CheetahSwitch Workgroup - 4508

Management Setup

Network Configuration ... Serial Port Configuration ... SNMP Configuration ... Console Login Configuration ... TFTP Download ...

Use <TAB> or arrow keys to move. <Enter> to select.

<OK>

Changing the Network Configuration

Use the Network Configuration menu to set the bootup option, configure the switch's Internet Protocol (IP) parameters, enable the on-board Web agent, or enable Telnet access. The screen shown below is described in the following table.

CheetahSwitch Workgroup - 4508

Network Configuration

IP Configuration ...

IP Connectivity Test (Ping) ...

Access Host Configuration ...

HTTP Configuration ...

MAX Number of Allowed Telnet Sessions (1 –4) : 4

MAC Address : 00-00-e8-12-34-56

Use <TAB> or arrow keys to move. <Enter> to select.

Parameter Description

IP Configuration Screen used to set the bootup option, or configure the switch’s IP

parameters for the Ethernet interface. IP Connectivity Test (Ping) Screen used to test IP connectivity to a specified device.

Access Host Configuration Screen used to restrict access to the host switch to specified subnets. HTTP Configuration Screen used to enable/disable the Web agent.

MAX Number of The maximum number of Telnet sessions allowed to simultaneously Allowed Telnet Sessions access the SNMP agent. Up to four sessions are supported.

MAC Address Physical address of the SNMP agent.

2-6

Management Guide

IP Configuration

Use the IP Configuration screen to set the bootup option, or configure the switch's IP parameters. The screen shown below is described in the following table.

CheetahSwitch Workgroup - 4508

Network Configuration: IP Configuration

Interface Type : Ethernet IP Address : 10.1.113.29 Subnet Mask : 255.255.0.0 Gateway IP : 10.1.0.254 IP State : USER-CONFIG

Use <TAB> or arrow keys to move. other keys to make changes.

Parameter Description

Interface Type Indicates IP over Ethernet.

IP Address

IP address of the switch you are managing when accessing the SNMP agent over the network. The management agent supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the agent (or running AccView) are assigned an IP address.

Valid IP addresses consist of four numbers, of 0 to 255, separated by periods. Anything outside of this format will not be accepted by the configuration program.

Subnet Mask

Subnet mask of the SNMP agent. This mask identifies the host address bits used for routing to specific subnets.

Default Gateway

Gateway used to pass trap messages from the switch’s agent to the management station. Note that the gateway must be defined if the management station is located in a different IP segment.

IP State Specifies whether IP functionality is enabled via manual configuration, or set by

Boot Protocol (BOOTP). Options include:

USER-CONFIG - IP functionality is enabled based on the default or user specified IP Configuration. (This is the default setting.)

BOOTP Get IP - IP is enabled but will not function until a BOOTP reply has been received. BOOTP requests will be periodically broadcast by the switch in an effort to learn its IP address.

1: The default value is null.

2-7

CheetahSwitch Workgroup-4508

IP Connectivity Test (Ping)

Use the IP Connectivity Test to see if another site on the Internet can be reached. The screen shown below is described in the following table.

CheetahSwitch Workgroup - 4508

Network Configuration: IP Connectivity Test (Ping)

IP Address : 200.123.211.109

Test Times : 1000 Interval : 1

Success : 1000 Failure : 0

[Start]

Use <TAB> or arrow keys to move. other keys to make changes.

<OK>

Parameter Description

IP Address IP address of the site you want to ping.

Test Times The number of ICMP echo requests to send to the specified site. (1~1000) Interval The interval (in seconds) between pinging the specified site. (1~ 10 seconds)

Success/Failure The number of times the specified site has responded or not to pinging.

Access Host Configuration

Use the Access Host Configuration screen to restrict management access to the host switch to specified subnets. The screen shown below is described in the following table.

CheetahSwitch Workgroup - 4508

Security Configuration: Access Host Configuration

IP Address Match IP Mask

1. 10.1.10.0 255.255.255.0

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

IP Address Match IP address of a subnet that is allowed management access to the host

switch. Up to five subnets can be specified. IP Mask The IP mask that identifies the subnet.

2-8

Management Guide

HTTP Configuration

Use the HTTP Configuration screen to enable/disable the on-board Web agent, and to specify the TCP port that will provide HTTP service. The screen shown below is described in the following table.

CheetahSwitch Workgroup - 4508

Network Configuration: HTTP Configuration

HTTP Server : ENABLED

HTTP Port Number : 80

Use <TAB> or arrow keys to move. <Space> to scroll options.

Parameter Description

HTTP Server Enables/disables the on-board Web agent.

HTTP Port Number Specifies the TCP port that will provide HTTP service.

(Range is 0~65535. Default is Port 80. Telnet Port 23 is prohibited.)

2-9

CheetahSwitch Workgroup-4508

Configuring the Serial Port

You can access the on-board configuration program by attaching a VT100 compatible device to the switch's serial port. For more information on connecting to this port, refer to the section on Making the Connections Required for System Configuration on page 9. The communication parameters for this port are accessed from the Serial Port Configuration screen seen below and described in the following table.

CheetahSwitch Workgroup - 4508

Serial Port Configuration

Management Mode : Console Mode

Baudrate : 19200

Databits : 8

Stopbits : 1

Parity : NONE

Time-Out (in minutes) : 10

Auto Refresh (in seconds) : 180

Use <TAB> or arrow keys to move. <Space> to scroll options.

Parameter Default Description

Management Mode Console Mode Indicates if the console port settings are for direct console

connection.

Baud Rate 19200 The rate at which data is sent between devices. (Options:

2400, 4800, 9600, 19200, 38400, 57600, 115200 bps, and Auto detection).

Note that when Auto is selected, you must first press the Enter key once to set the data rate and initialize the connection.

Databits 8 bits Sets the data bits of the RS-232 port. (Options: 7, 8)

Stopbits 1 bit Sets the stop bits of the RS-232 port. (Options: 1, 2)

Parity none Sets the parity of the RS-232 port. (Options: none/odd/even)

Time-Out 0 minutes If no input is received from the attached device after this

interval (in minutes), the current session is automatically closed. (Range: 0 -100 minutes; where 0 indicates disabled.)

Auto Refresh 0 sec. Sets the interval before a console session will auto refresh the

console information, including Spanning Tree Information, Port Configuration, Port Statistics, and RMON Statistics. (Range: 0, or 5 - 255 seconds; where 0 indicates disabled.)

2-10

Management Guide

Assigning SNMP Parameters

Use the SNMP Configuration screen to display and modify parameters for the Simple Network Management Protocol (SNMP). The switch includes an on-board SNMP agent which monitors the status of its hardware, as well as the traffic passing through its ports. A computer attached to the network, called a Network Management Station (NMS), can be used to access this information. Access rights to the on-board agent are controlled by community strings. To communicate with the switch, the NMS must first submit a valid community string for authentication. The options for configuring community strings and related trap functions are described in the following figures and table:

CheetahSwitch Workgroup - 4508

SNMP Configuration

SNMP Administration : ENABLED

Send Authentication Fail Traps : ENABLED

Send Link Up/Link Down Traps : ENABLED

SNMP Communities ...

IP Trap Managers ...

Use <TAB> or arrow keys to move. <Space> to scroll options.

Parameter Description

SNMP Administration Enables/disables the SNMP function of the agent.

Send Authentication Issue a trap message to specified IP trap managers whenever Fail Traps authentication of an SNMP request fails. (The default is disabled.)

Send Link Up/Link Down Issue a trap message to specified IP trap managers whenever a link Traps changes its up/down state. (The default is enabled.)

SNMP Communities Assigns SNMP access based on specified community strings. IP Trap Managers Specifies management stations that will receive authentication failure

messages or other trap messages from the switch.

2-11

CheetahSwitch Workgroup-4508

Configuring Community Names

The following figure and table describe how to configure the community strings authorized for trap management access. All community strings used for IP Trap Managers must be listed in this table. Up to 5 community names may be entered.

CheetahSwitch Workgroup - 4508

SNMP Configuration: SNMP Communities

Community Name Access Status

1. public READ ONLY ENABLED

2. private READ/WRITE ENABLED

Use <TAB> or arrow keys to move. other keys to make changes.

Parameter Description

Community Name A community entry authorized for trap management access. (The maximum

string length is 20 characters).

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

Status Sets administrative status of entry to enabled or disabled.

Note: This switch has default community strings of “public” with read only access and “private” with

read/write access.

Configuring IP Trap Managers

The following figure and table describe how to specify management stations that will receive authentication failure messages or other trap messages from the switch. Note that all community strings used for IP Trap Managers must be listed in the SNMP Communities table. Up to 5 trap managers may be entered.

CheetahSwitch Workgroup - 4508

2-12

SNMP Configuration: IP Trap Managers

IP Address Commu nity Name Status

1. 10.1.0.23 public DISABLED

Use <TAB> or arrow keys to move, other keys to make changes.

Management Guide

Parameter Description

IP Address IP address of the trap manager. Community Name A community specified in the SNMP Communities table.

Status Sets administrative status of entry to enabled or disabled.

Console Login Configuration

Use the Management Setup: Console Login Configuration to restrict management access based on specified user names and passwords, or to set the invalid password threshold and timeout. There are two user types, Administrator and Guest. Only the Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place. (If for some reason your password is lost, or you can not gain access to the System Configuration Program, contact your Accton distributor for assistance.) The parameters shown on this screen are indicated in the following figure and table.

CheetahSwitch Workgroup - 4508

Console Login Configuration

Password Threshold : 3

Lock-out Time (in seconds) : 0

User Type User Name Password

--------------------------------------Admin : admin Guest : guest

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Default Description

Password 3 Sets the password intrusion threshold which limits the number Threshold of failed logon attempts.

(Range: 0~65535)

Lock-out Time 0 The time (in seconds) the management console will be

disabled due to an excessive number of failed logon attempts. (Range: 0~65535)

Admin

name: admin Administrator has access privilege of Read/Write for all password: null screens.

Guest

name: guest Guest has access privilege of Read Only for all screens. password: null

1: Passwords can consist of up to 15 alphanumeric characters and are not case sensitive.

2-13

CheetahSwitch Workgroup-4508

Downloading System Software

Using TFTP Protocol to Download Over the Network

Use the TFTP Download menu to load software updates into the switch. The download file should be an ES4508 binary file from Accton; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.

CheetahSwitch Workgroup - 4508

TFTP Download

Download Server IP : 0.0.0.0 Download Filename : es4508a.bix Download Mode : PERMANENT

[Process TFTP Download]

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

Download Server IP IP address of a TFTP server.

Download Filename The binary file to download to the SNMP agent. Download Mode You can download to “Permanent” flash ROM or “Temporary” storage in

RAM (for test purposes). Note that if you download to temporary memory,

this firmware will be lost upon power off.

Process TFTP Download Issues request to TFTP server to download the specified file.

Note: You can also download firmware using the Web agent (see page 3-10) or a direct console

connection (see page A-1).

2-14

Management Guide

Configuring the Switch

The Device Control menu is used to set the communication parameters for individual ports, and to fine-tune the performance of your switch by adjusting the forwarding mode, flow control, and specific Spanning Tree parameters. Configuration menus are also provided for advanced functions, such as Virtual LANs, and port mirroring. Each of the setup screens provided by the configuration menus is described in the following sections.

CheetahSwitch Workgroup - 4508

Device Control Menu

Port Configuration ... Extended Bridge Configuration ... Port Information ... 802.1P Configuration ... Spanning Tree Configuration ... 802.1Q VLAN Base Information ... Spanning Tree Information ... 802.1Q VLAN Current Table Information ... Mirror Port Configuration ... 802.1Q VLAN Static Table Configuration ... Port Trunking Configuration ... 802.1Q VLAN Port Configuration ... IGMP Configuration ... Port GARP Configuration ... Broadcast Storm Control ... Port GMRP Configuration ...

Use <TAB> or arrow keys to move. <Enter> to select.

Parameter Description

Port Configuration Sets communication parameters for ports. Port Information Displays current port settings and port status.

Spanning Tree Configuration Configures the switch and its ports to participate in a Spanning Tree. Spanning Tree Information Displays the current Spanning Tree configuration for the switch.

Mirror Port Configuration Sets the source and target ports for mirroring. IGMP Configuration Configures IGMP multicast filtering.

Broadcast Storm Control Configures the threshold at which broadcast packets are discarded. Extended Bridge Displays/configures extended bridge capabilities provided by this switch,

Configuration including support for traffic classes, and VLAN extensions.

802.1P Configuration Configures default port priorities and queue assignments.

802.1Q VLAN Base Displays basic VLAN information, such as VLAN version number and Information maximum VLANs supported.

802.1Q VLAN Current Displays VLAN groups and port members. Table Information

802.1Q VLAN Static Table Configures VLAN groups via static assignments, including setting port Configuration members.

802.1Q VLAN Port Displays/configures port-specific VLAN settings, including PVID and Configuration ingress filtering.

Note: This switch does not support trunking, GVRP or GMRP. Therefore, the Port Trunking, Port GARP,

and Port GMRP configuration menus are not accessible from this screen.

<OK>

2-15

CheetahSwitch Workgroup-4508

Configuring Port Parameters

Use the Port Configuration menus to configure any port on the switch.

CheetahSwitch Workgroup - 4508

Port Configuration: Port1-8

Port Type Admin Flow Speed and

------------------------------------------------------

1. 1000SX ENABLED ON 1000-FULL

2. 1000SX ENABLED OFF 1000-FULL

3. 1000SX ENABLED ON 1000-FULL

4. 1000SX ENABLED OFF 1000-FULL

5. 1000SX ENABLED ON 1000-FULL

6. 1000SX ENABLED OFF 1000-FULL

7. 1000SX ENABLED OFF 1000-FULL

8. 1000SX ENABLED ON 1000-FULL

Use <TAB> or arrows keys to move. <Space> to scroll options.

Control Duplex

Parameter Default Description

Type Shows port type as 1000BASE-SX.

Admin ENABLED 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. You may also disable a port for security reasons.

Flow Control ON Used to enable or disable flow control. Flow control can

eliminate frame loss by “blocking” traffic from end stations or segments connected directly to the switch when its buffers fill. Back pressure is used for half duplex and IEEE 802.3x for full duplex. Note that flow control should not be used if a port is connected to a hub.

Speed and Duplex 1000-FULL Indicates the current port speed and duplex mode (1000-FULL

or AUTO). Although ports on the switch can be set for autonegotiation, operation is restricted to 1000 Mbps, full duplex.

2-16

Management Guide

Viewing the Current Port Configuration

The Port Information screen displays the port type, status, link state, and flow control in use. To change any of the port settings, use the configuration menu.

CheetahSwitch Workgroup - 4508

Port Information: Port1-8

Port Type Operational Link FlowControl Speed and

-------------------------------------------------------------

1. 1000SX YES DOWN 802. 3x 100 0-FULL

2. 1000SX YES DOWN NONE 1000-FULL

3. 1000SX YES UP 802.3x 1000-FULL

4. 1000SX YES DOWN NONE 1000-FULL

5. 1000SX YES DOWN 802. 3x 100 0-FULL

6. 1000SX YES UP NONE 1000-FULL

7. 1000SX YES DOWN NONE 1000-FULL

8. 1000SX YES UP 802.3x 1000-FULL

Use <TAB> or arrows keys to move. <Enter> to select.

InUse Duplex InUse

<OK>

Parameter Description

Type Shows port type as 1000BASE-SX.

Operational Shows if the port is functioning or not. Link Indicates if the port has a valid connection to an external device.

FlowControl InUse Shows the flow control type in use. Flow control can eliminate frame loss by

“blocking” traffic from end stations connected directly to the switch. IEEE

802.3x flow control is used for full duplex.

Speed and DuplexInUse Displays the current port speed and duplex mode used.

Using the Spanning Tree Algorithm

The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA-compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to “Spanning Tree Algorithm” in Chapter 4.

CheetahSwitch Workgroup - 4508

Spanning Tree Configuration: Selection Menu

STA Bridge Configuration ...

STA Port Configuration ...

Use <TAB> or arrows keys to move. <Enter> to select.

<OK>

2-17

CheetahSwitch Workgroup-4508

Configuring Bridge STA

The following figure and table describe Bridge STA configuration.

CheetahSwitch Workgroup - 4508

Spanning Tree Configuration: Bridge STA Configuration

Spanning Tree Protocol : ENABLED

Hello Time : 2

Max Age : 6

Priority : 32768

Forward Delay : 4

Use <TAB> or arrow keys to move, <Space> to scroll options.

Parameter Default Description

Spanning Tree Protocol Enabled Enable this parameter to participate in an STA-compliant network.

Hello Time 2 Time interval (in seconds) at which the root device transmits a

configuration message.

Minimum value: 1. Maximum value: lower of 10 or [(Max. Message Age / 2) -1].

Max (Message) Age 20 The maximum time (in seconds) a device can wait without

receiving a configuration message before attempting to reconfigure. All device ports (except for designated ports) should receive configuration messages at regular intervals. Any port that ages out STA information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the device ports attached to the network.

The minimum value is the higher of 6 or [2 x (Hello Time + 1)]. The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].

Priority 32,768 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. 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. Remember that the lower the numeric value, the higher the priority.

Forward Delay 15 The maximum time (in seconds) the root device will wait before

changing states (i.e., listening to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a blocking state; otherwise, temporary data loops might result.

The maximum value is 30. The minimum value is the higher of 4 or [(Max. Message Age / 2) + 1].

2-18

Management Guide

Configuring STA for Ports

The following figure and table describe STA configuration for ports.

CheetahSwitch Workgroup - 4508

Spanning Tree Port Configuration : Port 1 - 8

Port Type Priority Cost Fast STA Mode

----------------------------------------------------1 1000SX 128 4 DISABLED 2 1000SX 128 4 DISABLED 3 1000SX 128 4 DISABLED 4 1000SX 128 4 DISABLED 5 1000SX 128 4 DISABLED 6 1000SX 128 4 DISABLED 7 1000SX 128 4 DISABLED 8 1000SX 128 4 DISABLED

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Default Description

Type Shows port type as 1000BASE-SX. Priority 128 Defines the priority for the use of a port in the STA algorithm. If

the path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the spanning tree. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled.

The range is 0 - 255.

(Path) Cost 100/19/4 This parameter is used by the STA algorithm to determine 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.

The default and recommended range is:

Standard Ethernet: 100 (50~600) Fast Ethernet: 19 (10~60) Gigabit Ethernet: 4 (3~10) The full range is 0 - 65535.

Note: Path cost takes precedence over port priority.

Fast STA Mode DISABLED This parameter is used to enable/disabled the Fast Spanning

Tree mode. In this mode, ports skip the Blocked, Listening and Learning states and proceed straight to Forwarding.

The Fast STA Mode enables end-node workstations and servers to overcome time-out problems when the Spanning Tree Algorithm is implemented in a network. Therefore, the Fast STA Mode should only be enabled for ports that are connected to an end-node device.

2-19

CheetahSwitch Workgroup-4508

Viewing the Current Spanning Tree Configuration

The Spanning Tree Information screen displays a summary of the STA information for the overall bridge or for a specific port. To make any changes to the parameters for the Spanning Tree, use the Spanning Tree Configuration menu. Also note that this screen cannot be accessed unless you have already enabled the Spanning Tree Algorithm via the STA Bridge Configuration menu.

CheetahSwitch Workgroup - 4508

Spanning Tree Information : Selection Menu

STA Bridge Information ...

STA Port Information ...

Use <TAB> or arrows keys to move. <Enter> to select.

<OK>

Displaying the Current Bridge STA

The parameters shown in the following figure and table describe the current Bridge STA Information.

CheetahSwitch Workgroup - 4508

Spanning Tree Information : Bridge STA Information

Priority : 65535 Hello Time (in seconds) : 2 Max Age (in seconds) : 6 Forward Delay (in seconds) : 5 Hold Time (in seconds) : 2 Designated Root : 0.0000e8123456 Root Cost : 10 Root Port : 1 Reconfig Counts : 2 Topology Up Time : 0 day, 1 hr, 2min, 34 sec

Use <Tab> or arrow keys to move, <Enter> to select.

<OK>

Parameter Description

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).

2-20

Management Guide

Parameter Description

Hold Time The minimum interval between the transmission of consecutive

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.

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 no root port, then this switch has been accepted as the root device of the spanning tree network.

Reconfig Counts The number of times the spanning tree has been reconfigured. Topology Up Time The time since the spanning tree was last reconfigured.

Displaying the Current STA for Ports

The parameters shown in the following figure and table are for port STA Information.

CheetahSwitch Workgroup - 4508

Spanning Tree Information

Port Type Status Designated Designated Designated

---------------------------------------------------------------------

1. 1000SX forwarding 32768 128.0000e8123456 3

2. 1000SX forwarding 32768 128.0000e8123457 1

3. 1000SX forwarding 32768 128.0000e8123458 1

4. 1000SX forwarding 32768 128.0000e8123459 5

5. 1000SX listening 32768 128.0000e812345a 6

6. 1000SX learning 32768 128.0000e812345b 3

7. 1000SX forwarding 32768 128.0000e8123456 3

8. 1000SX forwarding 32768 128.0000e8123457 3

Use <TAB> or arrows keys to move. <Enter> to select.

Cost Bridge Port

<OK>

2-21

CheetahSwitch Workgroup-4508

Parameter Description

Type Shows port type as 1000SX (1000BASE-SX). Status Displays the current state of this port within the spanning tree:

Disabled Port has been disabled by the user or has failed diagnostics. Blocked Port receives STA configuration messages, but does not

Listening Port will leave blocking state due to topology change, starts

Learning Has transmitted configuration messages for an interval set by

Forwarding The port forwards packets, and continues learning addresses.

The rules defining port status are:

• A port on a network segment with no other STA compliant bridging device is always forwarding.

• If two ports of a switch are connected to the same segment and there is no other STA device attached to this segment, the port with the smaller ID forwards packets and the other is blocked.

• All ports are blocked when the switch is booted, then some of them change state to listening, to learning, and then to forwarding.

Designated Cost The cost for a packet to travel from this port 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 port on the designated bridging device through which this switch must

communicate with the root of the spanning tree.

forward packets.

transmitting configuration messages, but does not yet forward packets.

the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses.

2-22

Management Guide

Using a Mirror Port for Analysis

You can 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, note that the target port must be included in the same VLAN as the source port. (See Configuring Virtual LANs on page 2-41.)

You can use the Mirror Port Configuration screen to designate a single port pair for mirroring as shown below:

CheetahSwitch Workgroup - 4508

Mirror Port Configuration

Analyzer Port : Port 0

Monitored Port : Port 0

Analyzer Port Status : DISABLED

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

Mirror Source Port The port whose traffic will be monitored. Mirror Target Port The port that will “duplicate” or “mirror” all the traffic happening on

Status Enables or disables the mirror function.

the monitored port.

IGMP Multicast Filtering

Multicasting is used to support real-time applications such as video conferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its service to the network, and any hosts which want to receive the multicast register with their local multicast switch/router. Although this approach reduces the network overhead required by a multicast server, the broadcast traffic must be carefully pruned at every multicast switch/router it passes through to ensure that traffic is only passed on the hosts which subscribed to this service.

This switch uses IGMP (Internet Group Management Protocol) to query for any attached hosts who want to receive a specific multicast service. The switch looks up the IP Multicast Group used for this service and adds any port which received a similar request to that group. It then propagates the service request on to any neighboring multicast switch/router to ensure that it will continue to receive the multicast service. (For more information, see “IGMP Snooping and IP Multicast Filtering” in Chapter 4.)

2-23

CheetahSwitch Workgroup-4508

Configuring IGMP

This protocol allows a host to inform its local switch/router that it wants to receive transmissions addressed to a specific multicast group. You can use the IGMP Configuration screen to configure multicast filtering shown below:

CheetahSwitch Workgroup - 4508

IGMP Configuration

IGMP Status : ENABLED

Act as IGMP Querier : DI SABLED

IGMP Query Count : 5

IGMP Report Delay (Minutes) : 5

Use <TAB> or arrow keys to move, <Space> to scroll options.

Parameter Description

IGMP Status If enabled, the switch will monitor network traffic to determine which

hosts want to receive multicast traffic.

Act as IGMP Querier If enabled, the switch can serve as the “querier,” which is responsible

for asking hosts is they want to receive multicast traffic. (Not implemented in the current firmware release.)

IGMP Query Count The maximum number of queries issued for which there has been no

response before the switch takes action to solicit reports.

IGMP Report Delay The time (in minutes) between receiving an IGMP Report for an IP

multicast address on a port before the switch sends an IGMP Query out that port and removes the entry from its list.

Note: The default values are indicated in the sample screen.

2-24

Management Guide

Broadcast Storm Control

Use the Broadcast Storm Control menu to enable/disable broadcast suppression on a per-port basis. You can also set the packet-per-second threshold above which broadcast packets will be discarded. The parameters are shown in the following figure and table.

CheetahSwitch Workgroup - 4508

Broadcast Storm Control : Port1-8

Port Filtering Filtering

-----------------------------------------

1 DISABLED 10240 2 DISABLED 10240 3 DISABLED 10240 4 DISABLED 10240 5 DISABLED 10240 6 DISABLED 10240 7 DISABLED 10240 8 DISABLED 10240

Use <TAB> or arrow keys to move, <Space> to scroll options.

Status Threshold

Parameter Description

Filtering Status Enables/disables Broadcast Storm Control for the port. When enabled,

broadcast packets are discarded if the threshold rate is exceeded.

Filtering Threshold The threshold rate above which broadcast packets are discarded. The

default is 10240 packets per second. (Range is 1024 - 353,422 pps.)

2-25

CheetahSwitch Workgroup-4508

Configuring Bridge MIB Extensions

The Bridge MIB includes extensions for managed devices that support Traffic Classes, Multicast Filtering and Virtual LANs. To configure these extensions, use the Extended Bridge Configuration screen as shown below:

Cheetahswitch Workgroup - 4508

Extended Bridge Configuration

Bridge Capability : (Read Only)

Extended Multicast Filtering Services : NO Traffic Classes : YES Static Entry Individual Port : YES VLAN Learning : IVL Configurable PVID Tagging : YES Local VLAN Capable : NO

Bridge Settings :

Traffic Class : FALSE GMRP : DISABLED GVRP : DISABLED

Use <TAB> or arrow keys to move. <Space> to scroll option.

Parameter Description

Bridge Capability

Extended Multicast Filtering This switch does not support filtering of individual multicast Services addresses based on GMRP (GARP Multicast Registration Protocol).

Traffic Classes This switch provides the mapping of user priorities to multiple traffic

classes. (Refer to 802.1P Configuration.)

Static Entry Individual Port This switch allows static filtering for unicast and multicast addresses.

(Refer to Network Monitor Menu / Static Unicast Address Table Configuration and Static Multicast Address Table Configuration.)

VLAN Learning This switch uses Independent VLAN Learning (IVL), whereby each

port maintains its own VLAN filtering database.

Configurable PVID Tagging This switch allows you to override the default PVID setting (Port

VLAN ID used in frame tags) and its egress status (VLAN-Tagged or Untagged) on each port. (Refer to 802.1Q VLAN Port Configuration.)

Local VLAN Capable This switch does not support multiple local bridges (that is, multiple

Spanning Trees).

Bridge Settings

Traffic Class Multiple traffic classes are supported by this switch as indicated

under Bridge Capabilities. However, the switch supports just two priority queues and only the default port priority can be configured. The switch does not support the configuration of traffic class mapping. Therefore, this parameter under Bridge Settings is set to False and cannot be enabled.

Note: This switch does not support GVRP or GMRP. Therefore, the GVRP and GMRP parameters are

always disabled.

2-26

Management Guide

Configuring Traffic Classes

IEEE 802.1p defines up to 8 separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. You can use the 802.1P Configuration menu to configure the default priority for each port, or to display the mapping for the traffic classes as described in the following sections.

CheetahSwitch Workgroup - 4508

802.1P Configuration : Selection Menu

802.1P Port Priority Configuration ...

802.1P Port Traffic Class Information ...

Use <TAB> or arrows keys to move. <Enter> to select.

<OK>

Port Priority Configuration

The default priority for all ingress ports is zero. Therefore, any inbound frames that do not have priority tags will be placed in the low priority output queue. Default priority is only used to determine the output queue for the current port; no priority tag is actually added to the frame. You can use the 802.1P Port Priority Configuration menu to adjust default priority for any port as shown below:

CheetahSwitch Workgroup - 4508

802.1P Port Priority Configuration : Port1-8

Port Default Ingress Number of Egress

----------------------------------------------10 2 20 2 30 2 40 2 50 2 60 2 70 2 80 2

Use <TAB> or arrow keys to move, other keys to make changes.

User Priority Traffic Class

Parameter Description

Port Numeric identifier for switch port.

Default Ingress User Priority Default priority can be set to any value from 0~7, where 0~3

specifies the low priority queue and 4~7 specifies the high priority queue.

Number of Egress Traffic Classes Indicates that this switch supports two priority output queues.

2-27

CheetahSwitch Workgroup-4508

802.1p Port Traffic Class Information

This switch provides two priority levels with weighted fair queuing for port egress. This means that any frames with a default or user priority from 0~3 are sent to the low priority queue “0” while those from 4~7 are sent to the high priority queue “1” as shown in the following screen:

CheetahSwitch Workgroup - 4508

802.1P Port Traffic Class Information : Port 1 - 8

Port User Priority

01234567

----------------------------------------------------100001111 200001111 300001111 400001111 500001111 600001111 700001111 800001111

Use <TAB> or arrow keys to move, <Enter> to select.

<OK>

Parameter Description

Port Numeric identifier for switch port. User Priority Shows that user priorities 0~3 specify the low priority queue and 4~7

specify the high priority queue.

2-28

Management Guide

Configuring Virtual LANs

You can use the VLAN configuration menu to assign any port on the switch to any of up to 16 LAN groups. In conventional networks with routers, broadcast traffic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that handle traffic such as IPX or NetBeui. 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. For more information on how to use VLANs, see “Virtual LANs” in Chapter 4. The VLAN configuration screens are described in the following sections.

802.1Q VLAN Base Information

The 802.1Q VLAN Base Information screen displays basic information on the VLAN type supported by this switch.

CheetahSwitch Workgroup - 4508

802.1Q VLAN Base Information

VLAN Version Number : 1

MAX VLAN ID : 2048

MAX Supported VLANs : 16

Current Number of 802.1Q VLANs Configured : 1

Use <TAB> or arrow keys to move, <Enter> to select.

<OK>

Parameter Description VLAN Version Number The VLAN version used by this switch as specified in the IEEE

802.1Q standard.

MAX VLAN ID Maximum VLAN ID recognized by this switch. MAX Supported VLANs Maximum number of VLANs that can be configured on this switch.

Current Number of VLANs The number of VLANs currently configured on this switch. Configured

2-29

CheetahSwitch Workgroup-4508

802.1Q VLAN Current Table Information

This screen shows the current port members of each VLAN and whether or not the port supports VLAN tagging. Ports assigned to a large VLAN group that crosses several switches should use VLAN tagging. However, if you just want to create a small port-based VLAN for one or two switches, you can assign ports to the same untagged VLAN. The current configuration is shown in the following screen.

CheetahSwitch Workgroup - 4508

802.1Q VLAN Current Table Information

Deleted VLAN Entry Counts : 0

VID Creation Time Status

------------------------------------------------------1 0 (0 day 0 hr 0 min 0 sec) Permanent

Current Egress Ports Current Untagged Ports 00000000 11111111

Sorted by VID : 1

[Show] [More]

Use <TAB> or arrow keys to move. <Enter> to select.

<OK>

Parameter Description

Deleted VLAN Entry Counts The number of times a VLAN entry has been deleted from this table. VID The ID for the VLAN currently displayed.

Creation Time The value of sysUpTime (System Up Time) when this VLAN was

created. Status Shows that this VLAN was added to the switch as a static entry.

Current Egress Ports Shows the ports which have been added to the displayed VLAN

group, where “1” indicates that a port is a member and “0” that it is

not. Current Untagged Ports If a port has been added to the displayed VLAN (see Current Egress

Ports), its entry in this field will be “1” if the port is untagged or “0” if

tagged.

Sorted by VID The VID number where the table display starts. [Show] Displays the members for the VLAN indicated by the “Sorted by VID”

field.

[More] Displays any subsequent VLANs if configured.

2-30

Management Guide

802.1Q VLAN Static Table Configuration

Use this screen to create a new VLAN or modify the settings for an existing VLAN. Note that all ports can only belong to one untagged VLAN. This is set to VLAN 1 by default, but can be changed via the 802.1Q VLAN Port Configuration screen.

CheetahSwitch Workgroup - 4508

1Q VLAN Static Table Configuration

VID VLAN Name Status

------------------------------

Egress Ports Forbidden Egress Ports

VID:0 [Show] [More] [New]

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

VID The ID for the VLAN currently displayed.

Range: 1-2048 VLAN Name A user-specified symbolic name for this VLAN.

String length: Up to 8 alphanumeric characters

Status Sets the current editing status for this VLAN as:

Not in Service, Destroy, or Active. Unit Stack unit.

Egress Ports Set the entry for any port in this field to “1” to add it to the displayed

VLAN, or “0” to remove it from the VLAN. Forbidden Egress Ports Prevents a port from being automatically added to this VLAN via

GVRP. Note that GVRP is not supported by this switch.

[Show] Displays settings for the specified VLAN. [More] Displays consecutively numbered VLANs.

[New] Sets up the screen for configuring a new VLAN.

2-31

CheetahSwitch Workgroup-4508

For example, the following screen displays settings for VLAN 2, which includes tagged ports 1-6, and forbidden port 8.

CheetahSwitch Workgroup - 4508

1Q VLAN Static Table Configuration

VID VLAN Name Row Status

-----------------------------2 RD Active

Egress Ports Forbidden Egress Ports 11111100 00000001

VID:2 [Show] [More] [New]

Use <TAB> or arrow keys to move, other keys to make changes.

802.1Q VLAN Port Configuration

Use this screen to configure port-specific settings for IEEE 802.1Q VLAN features.

CheetahSwitch Workgroup - 4508

802.1Q VLAN Port Configuration : Port 1 - 8

Port PVID Acceptable Ingress GVRP GVRP Failed GVRP Last

-----------------------------------------------------------------------------1 1 All FALSE DISABLED 0 00-00-00-00-00-00 2 1 All FALSE DISABLED 0 00-00-00-00-00-00 3 1 All FALSE DISABLED 0 00-00-00-00-00-00 4 1 All FALSE DISABLED 0 00-00-00-00-00-00 5 1 All FALSE DISABLED 0 00-00-00-00-00-00 6 1 All FALSE DISABLED 0 00-00-00-00-00-00 7 1 All FALSE DISABLED 0 00-00-00-00-00-00 8 1 All FALSE DISABLED 0 00-00-00-00-00-00

Frame Type Filtering Status Registrations PDU Origin

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

PVID The VLAN ID assigned to untagged frames received on this port. Use the

PVID to assign ports to the same untagged VLAN.

Acceptable Frame This switch accepts “All” frame types, including Type VLAN tagged or VLAN untagged frames. Note that all VLAN untagged

frames received on this port are assigned to the PVID for this port.

Ingress Filtering If set to “True,” incoming frames for VLANs which do not include this port in

their member set will be discarded at the inbound port.

Note: This switch does not support GVRP. Therefore, the GVRP Status parameter is set to disabled

and cannot be enabled. The other GVRP parameters will always display zeros.

2-32

Management Guide

Monitoring the Switch

The Network Monitor Menu provides access to port statistics, RMON statistics, IP multicast addresses, and the static (unicast) address table. Each of the screens provided by these menus is described in the following sections.

CheetahSwitch Workgroup - 4508

Network Monitor Menu

Port Statistics ... RMON Statistics ... Unicast Address Table ... Multicast Address Registration Table ... IP Multicast Registration Table ... Static Unicast Address Table Configuration ... Static Multicast Address Table Configuration...

Use <TAB> or arrows keys to move. <Enter> to select.

Menu Description

Port Statistics Displays statistics on network traffic passing through the selected

port.

RMON Statistics Displays detailed statistical information for the selected port such as

packet type and frame size counters.

Unicast Address Table Provides full listing of all unicast addresses stored in the switch, as

well as sort, search and clear functions.

Multicast Address Registration Displays the ports that belong to each GMRP Multicast group. Table (Not implemented for this switch.)

IP Multicast Registration Table Displays the ports that belong to each IP Multicast group. Static Unicast Address Table Allows you to display or configure static unicast addresses.

Configuration

Static Multicast Address Table Allows you to display or configure static GMRP multicast addresses. Configuration (Not implemented for this switch.)

Note: This switch does not support GMRP. Therefore, both the Multicast Address Registration Table

and the Static Multicast Address Table Configuration items are not accessible.

<OK>

2-33

CheetahSwitch Workgroup-4508

Displaying Port Statistics

Port Statistics display key statistics from the Ethernet-like MIB 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.

The statistics displayed are indicated in the following figure and table.

CheetahSwitch Workgroup - 4508

Port Statistics : Port 1

EtherLike Counter:

Alignment Errors :0 Late Collisions :0 FCS Errors :0 Excessive Collisions :0 Single Collision Frames :0 Internal MAC Transmit Errors :0

Multiple Collision Frames:0 Carrier Sense Errors :0 SQE Test Errors :0 Frames Too Long :0 Deffered Transmissions :0 Internal MAC Rec eive Errors :0

[Refresh Counters] [Reset Counters]

Use <TAB> or arrow keys to move. <Enter> to select.

Parameter Description

Alignment Errors For 10 Mbps ports, this counter records alignment errors (mis-

synchronized data packets). For 100 Mbps ports, this counter records the sum of alignment errors and code errors (frames received with rxerror signal).

FCS Errors The number of frames received that are an integral number of octets

in length but do not pass the FCS check.

Single Collision Frames

The number of successfully transmitted frames for which transmission is inhibited by exactly one collision.

Multiple Collision Frames

A count of successfully transmitted frames for which transmission is inhibited by more that one collision.

SQE Test Errors

A count of times that the SQE TEST ERROR message is generated by the PLS sublayer.

Deferred Transmissions

A count of frames for which the first transmission attempt on a particular interface is delayed because the medium was busy.

Late Collisions The number of times that a collision is detected later than 512 bit-

times into the transmission of a packet.

Excessive Collisions

The number of frames for which transmission failed due to excessive collisions.

Internal Mac Transmit Errors1The number of frames for which transmission failed due to an

internal MAC sublayer transmit error.

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Parameter Description

Carrier Sense Errors

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

Frames Too Long The number of frames received that exceed the maximum permitted

frame size.

Internal Mac Receive Errors

The number of frames for which reception failed due to an internal MAC sublayer receive error.

1: The reported values will always be zero because these statistics are not supported by the internal

chip set.

Displaying RMON Statistics

Use the RMON Statistics screen to display RMON Group 1 statistics for each port. (RMON groups 2, 3 and 9 can only be accessed using SNMP management software such as AccView.) The following screen displays overall statistics on traffic passing through each port. RMON statistics provides access to a broad range of statistics, including a total count of different frame types passing through each port. Values displayed have been accumulated since the last system reboot.

CheetahSwitch Workgroup - 4508

RMON Statistics : Port 1

Drop Events : 0 Jabbers : 0

Received Bytes : 0 Collisions : 0

Received Frames : 0 64 Byte Frames : 0

Broadcast Frames : 0 65-127 Byte Frames : 0

Multicast Frames : 0 128-255 Byte Frames : 0

CRC/Alignment Errors : 0 256-511 Byte Frames : 0

Undersize Frames : 0 512-1023 Byte Frames : 0

Oversize Frames : 0 1024-1518 Byte F rames : 0

Fragments : 0

[Refresh Statistics] [Reset Counters]

Use <TAB> or arrow keys to move. <Enter> to select

Parameter Description

Drop Events The total number of events in which packets were dropped due to lack of

resources.

Receive Bytes Total number of data bytes 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 multicast) received.

Broadcast Frames The total number of good frames received that were directed to the

broadcast address. Note that this does not include multicast packets. Multicast Frames The total number of good frames received that were directed to this

multicast address.

CRC/Alignment Errors For 1000Mbps ports, the counter records the sum of CRC/alignment errors

and code errors (frame received with rxerror signal).

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CheetahSwitch Workgroup-4508

Parameter Description

Undersize Frames The total number of frames received that were less than 64 octets long

Oversize Frames The total number of frames received that were longer than 1518 octets

Fragments The total number of frames received that were less than 64 octets in length

Jabbers The total number of frames received that were longer than 1518 octets

Collisions The best estimate of the total number of collisions on this Ethernet

64 Byte Frames The total number of frames (including bad packets) received and

65-127 Byte Frames The total number of frames (including bad packets) received and

128-255 Byte Frames The total number of packets (including bad packets) received and

256-511 Byte Frames The total number of packets (including bad packets) received and

512-1023 Byte Frames The total number of packets (including bad packets) received and

1024-1518 Byte Frames The total number of packets (including bad packets) received and

(excluding framing bits, but including FCS octets) and were otherwise well

formed.

(excluding framing bits, but including FCS octets) and were otherwise well

formed.

(excluding framing bits, but including FCS octets) and had either an FCS or

alignment error.

(excluding framing bits, but including FCS octets), and had either an FCS

or alignment error.

segment.

transmitted that were 64 octets in length (excluding framing bits but

including FCS octets).

transmitted that were between 65 and 127 octets in length inclusive

(excluding framing bits but including FCS octets).

transmitted that were between 128 and 255 octets in length inclusive

(excluding framing bits but including FCS octets).

transmitted that were between 256 and 511 octets in length inclusive

(excluding framing bits but including FCS octets).

transmitted that were between 512 and 1023 octets in length inclusive

(excluding framing bits but including FCS octets).

transmitted that were between 1024 and 1518 octets in length inclusive

(excluding framing bits but including FCS octets).

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Using the Address Table

The Address Table contains the MAC addresses and VLAN identifiier associated with each port (that is, the source port associated with the address and VLAN). The address table provides search options for a specific port, address or VLAN identifier. You can also clear the entire address table, or information associated with a specific port, address, or VLAN identifier; or set the aging time for deleting inactive entries. The information displayed in the Address Table is indicated in the following figure and table.

CheetahSwitch Workgroup - 4508

Unicast Address Table

Aging Time : 300 Dynamic Count : 221 Static Count : 0

MAC VID Port Status MAC VID Port Status

-----------------------------------------------------------------------------00-00-24-B3-28-83 1 2 D 00-00-E8-00-00-96 1 2 D 00-00-E2-12-F9-F8 1 2 D 00-00-E8-00-01-01 1 2 D 00-00-E2-16-C5-82 1 2 D 00-00-E8-02-A0-E6 1 2 D 00-00-E2-20-C3-D5 1 2 D 00-00-E8-07-12-5E 1 2 D 00-00-E2-21-74-D0 1 2 D 00-00-E8-10-00-AB 1 2 D 00-00-E8-00-00-02 1 2 D 00-00-E8-11-11-33 1 2 D 00-00-E8-00-00-18 1 2 D 00-00-E8-12-00-69 1 2 D 00-00-E8-00-00-1A 1 2 D 00-00-E8-12-24-60 1 2 D

Sorted by : MAC + VID Cleared by : MAC + VID VLAN ID : 1 VLAN ID : 1 MAC : 00-00-00-00-00-00 MAC : 00-00-00-00-00-00 [Show] [More] [Clear] [Clear ALL]

Use <TAB> or arrow keys to move, other keys to make changes.

Parameter Description

Aging Time Time-out period in seconds for aging out dynamically learned forwarding

information.

Range: 10 - 458 seconds Default: 300 seconds

Dynamic Count The number of dynamically learned addresses in the table. Static Count The number of static addresses in the table.

MAC The MAC address of a node. VID The VLAN(s) associated with this address or port.

Port The port whose address table includes this MAC address. Status Indicates address status as:

D: Dynamically learned, or P: Fixed permanently by SNMP network management software.

[Show] Displays the address table based on specified VLAN ID, and sorted by primary key

MAC or VID. [More] Scrolls through the entries in the address table.

[Clear] Clears the specified MAC address. [Clear All] Clears all MAC addresses in the table.

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CheetahSwitch Workgroup-4508

Displaying the IP Multicast Registration Table

Use the IP Multicast Registration Table to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID.

CheetahSwitch Workgroup - 4508

IP Multicast Registration Table

VID Multicast IP Dynamic Port Lists Learned by

--------------------------------------------------------------1 225.1.1.1 10010110

5 225.1.1.2 11001001

Sorted by : VID + Multicast IP VID : 1 Multicast IP : [Show] [More]

Use <TAB> or arrow keys to move, <Enter> to select.

<OK>

Parameter Description

VID VLAN ID assigned to this multicast group. Multicast IP IP address for specific multicast services.

Dynamic Port Lists The switch ports registered for the indicated multicast service. Learned by Indicates the manner in which this address was learned:

Dynamic or IGMP [Show] Displays the address table sorted on VID and then Multicast IP.

[More] Scrolls through the entries in the address table.

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Configuring Static Unicast Addresses

Use the Static Unicast Address Table Configuration screen to manually configure host MAC addresses in the unicast table. You can use this screen to associate a MAC address with a specific VLAN ID and switch port as shown below.

CheetahSwitch Workgroup - 4508

Static Unicast Addreeess Table Configuration

VID MAC Address Port Status

-----------------------------------------------------------1 00-00-00-E8-43-12 1 Permanent

Sorted by : VID + MAC VID : 1 MAC : 00-00-00-00-00-00

VID:1 Port:1 MAC : 00-00-00-00-00-00 Status : Permanent

[Show] [More] [Set]

Use <TAB> or arrow keys to move, <Enter> to select.

<OK>

Parameter Description

VID The VLAN group this port is assigned to. MAC Address The MAC address of a host device attached to this switch.

Port The port the host device is attached to. Status The status for an entry can be set to:

Permanent: This entry is currently in use and will remain so after the next reset of the switch. DeleteOnReset: This entry is currently in use and will remain so until the next reset. Invalid: Removes the corresponding entry. DeleteOnTimeOut: This entry is currently in use and will remain so until it is aged out. (Refer to Address Table Aging Time.) Other: This entry is currently in use but the conditions under which it will remain so differ from the preceding values.

[Show] Displays the static address table sorted on VID as the primary key

and MAC address as secondary key.

[More] Scrolls through entries in the static address table. [Set] Adds the specified entry to the static address table, such as shown in

the following example:

VID : 1 MAC : 00-00-00-e8-34-22 Port : 1 Status : Permanent

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CheetahSwitch Workgroup-4508

Resetting the System

Use the System Restart Menu under the Main Menu to reset the management agent. The reset screen also includes an option to return all configuration parameters to their factory defaults.

CheetahSwitch Workgroup - 4508

System Restart Menu

Restart Option :

POST : NO Reload Factory Defaults : NO Keep IP Setting : NO Keep User Authentication : NO

[Restart]

Use <TAB> or arrow keys to move, <Space> to scroll options.

<OK>

Parameter Description

POST Runs the Power-On Self-Test. Reload Factory Defaults Reloads the factory defaults.

Keep IP Setting Retains the settings defined in the IP Configuration menu. Keep User Authentication Retains the user names and passwords defined in the Console Login

Configuration menu.

[Restart] Restarts the switch.

Logging Off the System

Use the Exit command under the Main Menu to exit the configuration program and terminate communications with the switch for the current session.

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Chapter 3: Using the Web Agent

As well as the menu-driven system configuration program, the CheetahSwitch Workgroup-4508 provides an embedded HTTP Web agent. This agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above).

Using the Web browser management interface you can configure the switch and view statistics to monitor network activity. The Web interface also provides access to a range of SNMP management functions with its MIB and RMON browser utilities.

Prior to accessing the switch from a Web browser, be sure you have first performed the following tasks:

1. Configure it with a valid IP address, subnet mask, and default gateway using an out-of-band serial connection or BOOTP protocol.

2. Set the Administrator user name and password using an out-of-band serial connection. Access to the Web agent is controlled by the same Administrator user name and password as the on-board configuration program.

Navigating the Web Browser Interface

To access the Web-browser interface you must first enter a user name and password. The default user name is “admin” with a null password. The administrator has read/write access to all configuration parameters and statistics.

Note: Based on the default configuration, a user is allowed three attempts to enter the

correct password; on the third failed attempt the current connection is terminated. (See Console Login Configuration in Chapter 2.)

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CheetahSwitch Workgroup-4508

Home Page

When your Web browser connects with the switch’s Web agent, the home page is displayed as shown below. The home page displays the Main Menu on the lefthand side of the screen and the System Information on the right-hand side. The Main Menu links are used to navigate to other menus and display configuration parameters and statistical data.

Configurable parameters have a dialog box or a drop-down list. Once a configuration change has been made on a page, be sure to click on the “Apply” button at the bottom of the page to confirm the new setting. Alternatively, you can click on “Revert” to clear any changes prior to pressing “Apply.”

Note: To ensure proper screen refresh after a command entry, be sure that Internet

Explorer 5.0 is configured as follows: Under the menu “Tools / Internet Options / General / Temporary Internet Files / Settings,” the setting for item “Check for newer versions of stored pages” should be “Every visit to the page.”

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Management Guide

Panel Display

The Web Agent displays an image of the switch’s ports, showing port link and activity. Clicking on the image of a port displays statistics and configuration information for the port. Clicking on the image of the serial port (labelled “Mgmt”) displays the Console Configuration screen.

Console Configuration

Click on the serial port icon in the switch image to display and configure the out-ofband serial port connection, as shown in the following figure and table.

Parameter Default Description

Baudrate 19200 The rate at which data is sent between devices. (Options: 2400,

Time Out 0 minutes If no input is received from the attached device after this interval

Databits 8 bits Sets the data bits of the RS-232 port. (Options: 7, 8) Stopbits 1 bit Sets the stop bits of the RS-232 port. (Options: 1, 2)

Parity none Sets the parity of the RS-232 port. (Options: none/odd/even) Auto Refresh 0 sec. Sets the interval before a console session will auto refresh the

4800, 9600, 19200, 38400, 57600, 115200 bps, and Auto detection).

Note that when AUTO is selected, you need to first press the Enter key once to set the data rate and initialize the connection.

(in minutes), the current session is automatically closed. (Range: 0 -100 minutes; where 0 indicates disabled.)

console information, including Spanning Tree Information, Port Configuration, Port Statistics, and RMON Statistics. (Range: 0, or 5 - 255 seconds; where 0 indicates disabled.)

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CheetahSwitch Workgroup-4508

Main Menu

Using the on-board Web agent, you can define system parameters, manage and control the switch and all its ports, or monitor network conditions. The figure to the right of the Main Menu and the following table briefly describe the selections available from this program.

Item Description

System Provides basic system description, including contact information.

Switch Shows hardware/firmware version numbers and power status. IP Includes boot state, IP address, and Telnet session count.

SNMP Configures communities and trap managers; and activates traps. Security Sets password for system access..

Upgrade Downloads new version of firmware to update your system. Address Provides full address listing, sorted by address or port.

STA Enables Spanning Tree Algorithm; also sets parameters for switch priority,

Port Enables any port and enables/disables flow control.

VLAN Assigns switch ports to form up to 16 independent LAN groups. Analyzer Sets analysis and monitored port.

Statistics Displays statistics on network traffic passing through the selected port. Broadcast Enables/disables broadcast suppression on a per-port basis. Also sets the

Storm Control broadcast-rate threshold above which broadcast packets are discarded.

Apply Implement the changes made to the current configuration menu. Revert Cancel changes made to current configuration menu (prior to pressing Apply).

Help Help on using the Web management interface.

hello time, maximum message age, and forward delay; as well as port priority and path cost.

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Management Guide

System Information

Use the System Information screen to display descriptive information about the switch, or for quick system identification as shown in the following figure and table.

Parameter Description

System Name

IP Address

Name assigned to the switch system.

IP address of the SNMP agent. The management agent supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the agent module (or running AccView) are assigned an IP address. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods. Anything outside of this format will not be accepted by the configuration program.

System Object ID MIB II object identifier for switch’s network management subsystem

Location Contact

Specifies the area or location where the system resides. Contact person for the system.

System Uptime Length of time the current management agent has been running.

1: Maximum string length is 255, but the screen only displays 45 characters. You can use the arrow keys to

browse the whole string.

2: The default value is null.

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CheetahSwitch Workgroup-4508

Switch Information

Use the Switch Information screen to display hardware/firmware version numbers for the main board and SNMP agent, as well as the power status.

Main Board

Parameter Description

Hardware Version Hardware version of the main board.

POST Version System POST version. Firmware Version Version number of the system firmware in ROM.

Port Number Number of ports. Serial Number Internal Power Status

Redundant Power Status1Redundant power status for the switch.

1: These parameters are not implemented in the current hardware version.

Serial number of the main board.

Power status for the switch.

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Management Guide

Network Configuration

Use the IP Configuration screen to set the bootup option, configure the Ethernet IP addresses for the agent module, or set the number or concurrent Telnet sessions allowed. The Access Host screen can be used to limit access to the Web management agent to specified subnet groups.

IP Configuration

Use the IP Configuration screen to set the bootup option, configure the Ethernet IP addresses for the agent module, or set the number or concurrent Telnet sessions allowed. The screen shown below is described in the following table.

Parameter Description

IP State Specifies whether IP functionality is enabled via manual configuration, or set by

IP Address

Subnet Mask

Gateway IP

Telnet Session Number Sets the number of concurrent Telnet sessions allowed to access the management

1: The default value is null.

Boot Protocol (BOOTP). Options include:

USER-CONFIG - IP functionality is enabled based on the default or user specified IP Configuration. (This is the default setting.)

BOOTP Get IP - IP is enabled but will not function until a BOOTP reply has been received. BOOTP requests will be periodically broadcast by the switch in an effort to learn its IP address. (BOOTP values include the IP address, default gateway, subnet mask, TFTP boot file name, and TFTP server IP.)

IP address of the SNMP agent. The management agent supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the agent (or running AccView) are assigned an IP address. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods. Anything outside of this format will not be accepted by the configuration program.

Subnet mask of the SNMP agent. This mask identifies the host address bits used for routing to specific subnets.

Gateway used to pass trap messages from the switch’s agent to the management station. Note that the gateway must be defined if the management station is located in a different IP segment.

agent. The default is four sessions.

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CheetahSwitch Workgroup-4508

Access Host

Use the Access Host screen to specify subnet groups from which the switch’s management agent can be accessed. The screen shown below is described in the following table.

Parameter Description

Access IP Net An IP address of a subnet authorized for management access.

Access IP Mask A subnet mask that identifies the host address bits of the subnet. Add/Remove Add/remove strings from the active list.

SNMP Configuration

SNMP Administration Enable

Access to the management agent from SNMP-based network management software can be enabled/disabled from this screen.

Clearing the checkbox disables the SNMP protocol in the agent so that the switch can only be managed through the Web-based interface or a direct connection to the serial port. Note that even when SNMP Administration is disabled, the agent will continue to issue SNMP trap messages.

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Management Guide

SNMP Community

Parameter Description

Community String A community entry authorized for trap management access. (The maximum

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

Add/Remove Add/remove strings from the active list.

string length is 20 characters).

Trap Managers

Parameter Description

Trap Manager IP Address IP address of the trap manager.

Trap Manager Community String A community specified in the SNMP Communities table. Add/Remove Add/remove strings from the active list.

Enable Authentication Traps Issues a trap message to specified IP trap managers whenever

authentication of an SNMP request fails. (The default is enabled.)

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CheetahSwitch Workgroup-4508

Security Configuration

Use the Security Configuration screen to restrict management access based on Administrator user name and password. Only the Administrator has write access for parameters governing the SNMP agent. You should therefore assign a password to the Administrator as soon as possible, and store it in a safe place. (If for some reason your password is lost, or you can not gain access to the system’s configuration program, contact your Accton distributor for assistance.) The parameters shown on this screen are indicated in the following figure and table.

Change Password

Parameter Description

Old Password Current Administrator password for read/write access (Default password is null). New Password Enter a new password for the Administrator.

Confirm Password Re-enter the new password for the Administrator.

Note: Passwords can consist of up to 15 alphanumeric characters and are not case sensitive.

Firmware Upgrade Options

Web Upload Management

Use the Web Upload Management menu to load software updates into the switch. The upload file should be an ES4508 binary file from Accton; otherwise the agent will not accept it. The success of the upload operation depends on the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.

Parameter Description

Upload Mode You can upload to permanent flash ROM or temporary storage in

RAM (for test purposes). Note that if you download to temporary memory, this firmware will be lost upon power off.

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Management Guide

Parameter Description

File Name The ES4508 binary file to download. Use the Browse button to locate

Start Web Upload Issues request to TFTP server to download the specified file.

the firmware file.

TFTP Download Management

Use the TFTP Download Management menu to load software updates into the switch. The download file should be an ES4508 binary file from Accton; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.

Parameter Description

Download Mode You can download to permanent flash ROM or temporary storage in

Server IP Address IP address of a TFTP server. File Name The ES4508 binary file to download.

Start TFTP Download Issues request to TFTP server to download the specified file.

RAM (for test purposes). Note that if you download to temporary memory, this firmware will be lost upon power off.

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CheetahSwitch Workgroup-4508

Address Table Configuration

The Address Table contains the MAC addresses associated with each port (that is, the source port associated with the address). The address table provides search options for a specific port or address. You can also clear the entire address table, or information associated with a specific port or address; or set the aging time for deleting inactive entries. The information displayed in the Address Table is indicated in the following figure and table.

Parameter Description

Aging Time Time-out period in seconds for aging out dynamically learned forwarding

Address Table Sort by Entries can be sorted by MAC address or VLAN ID. Address Table The system displays the MAC address of each node, the port whose

New Static Address Use the “MAC Address,” “VLAN” and “Port” fields to add a static entry to the

Add/Remove Adds/removes selected address.

Clear Table Removes all addresses from the address table.

information. Range: 0 or 10 - 458 secs; 0=disable, default: 300 secs.

address table includes this MAC address, the associated VLAN(s), and the address status (i.e., dynamic or static).

address table.

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Management Guide

STA (Spanning Tree Algorithm)

The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to “Spanning Tree Algorithm” in Chapter 4.

Spanning Tree Information

Spanning Tree

The parameters shown in the following figure and table describe the current bridge STA Information.

Parameter Description

Spanning Tree State Shows if switch is enabled to participate in an STA compliant network. Bridge ID A unique identifier for this bridge, consisting of bridge priority plus MAC

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

Hello Time The time interval (in seconds) at which the root device transmits a

Forward Delay The maximum time (in seconds) the root device will wait before changing

Designated Root The priority and MAC address of the device in the spanning tree that this

Root Port The number of the port on this switch that is closest to the root. This switch

Root Path Cost The path cost from the root port on this switch to the root device.

Configuration Changes The number of times the spanning tree has been reconfigured. Last Topology Change The time since the spanning tree was last reconfigured

address (the MAC address of the switch unit).

configuration message before attempting to reconfigure.

configuration message.

states (i.e., listening to learning to forwarding).

switch has accepted as the root device.

communicates with the root device through this port. If there is no root port, then this switch has been accepted as the root device of the spanning tree network.

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CheetahSwitch Workgroup-4508

Ports

The parameters shown in the following figure and table are for port STA Information.

Parameter Description

Port Status Displays the current state of this port within the spanning tree:

Disabled Port has been disabled by the user or has failed diagnostics. Blocked Port receives STA configuration messages, but does not

Listening Port will leave blocking state due to topology change, starts

Learning Has transmitted configuration messages for an interval set by

Forwarding The port forwards packets, and continues learning addresses.

The rules defining port status are:

• A port on a network segment with no other STA compliant bridging device is always forwarding.

• If two ports of a switch are connected to the same segment and there is no other STA device attached to this segment, the port with the smaller ID forwards packets and the other is blocked.

• All ports are blocked when the switch is booted, then some of them change state to listening, to learning, and then to forwarding.

Forward Transitions The number of times the port has changed status to forwarding state. Designated Cost The cost for a packet to travel from this port to the root in the current

spanning tree configuration. The slower the media, the higher the cost.

Designated Bridge The priority and MAC address of the device through which this port must

communicate to reach the root of the spanning tree.

Designated Port The port on the designated bridging device through which this switch must

communicate with the root of the spanning tree.

forward packets.

transmitting configuration messages, but does not yet forward packets.

the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses.

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Management Guide

Spanning Tree Configuration

The following figures and tables describe Bridge STA configuration.

Switch

Parameter Default Description

Usage Enabled Enable this parameter to participate in an STA compliant

Priority 32,768 Device priority is used in selecting the root device, root port, and

network.

Enter a value from 0 - 65535.

Remember that the lower the numeric value, the higher the priority.

When the Switch Becomes Root

Parameter Default Description

Hello Time 2 The time interval (in seconds) at which the root device transmits

Max (Message) Age 20 The maximum time (in seconds) a device can wait without

a configuration message.

The minimum value is 1. The maximum value is the lower of 10 or [(Max. Message Age / 2) -1].

The minimum value is the higher of 6 or [2 x (Hello Time + 1)]. The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].

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CheetahSwitch Workgroup-4508

Parameter Default Description

Forward Delay 15 The maximum time (in seconds) the root device will wait before

The maximum value is 30. The minimum value is the higher of 4 or [(Max. Message Age / 2) + 1].

STA Port Configuration

The following figure and table describe STA configuration for ports.

Parameter Default Description

Priority 128 Defines the priority for the use of a port in the STA algorithm. If the

(Path) Cost 100/19/4 This parameter is used by the STA algorithm to determine the best

path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the spanning tree. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled.

The range is 0 - 255.

path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media.

The default and recommended range is: Standard Ethernet: 100 (50~600) Fast Ethernet: 19 (10~60) Gigabit Ethernet: 4 (3~10)

The full range is 0 - 65535. Note: Path cost takes precedence over port priority.

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Management Guide

Parameter Default Description

Fast STA Mode Disabled This enables/disables the Fast STA Mode for the port. In this mode,

ports skip the Blocked, Listening and Learning states and proceed straight to Forwarding.

Configuring Bridge MIB Extensions

The Bridge MIB includes extensions for managed devices that support Traffic Classes and Virtual LANs. To display the switch’s support for these extensions, use the Extended Bridge Configuration screen as shown below:

Bridge Capability

Parameter Description

Extended Multicast Filtering The switch does not support the filtering of individual multicast Services addresses based on GMRP (GARP Multicast Registration Protocol).

Traffic Classes The switch provides mapping of user priorities to multiple traffic

Static Entry Individual Port The switch provides static filtering for unicast and multicast addresses.

VLAN Learning This switch uses Independent VLAN Learning (IVL), whereby each

Configurable PVID Tagging The switch allows you to override the default PVID setting (Port VLAN

Local VLAN Capable This switch does not support multiple local bridges (that is, multiple

classes. (Refer to the Priority menu.)

(Refer to the Address Table.)

port maintains its own VLAN filtering database.

ID used in frame tags) and its egress status (VLAN-Tagged or Untagged) on each port. (Refer to VLAN / VLAN Port Configuration.)

Spanning Trees).

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CheetahSwitch Workgroup-4508

Bridge Settings

Parameter Description

Traffic Class Multiple traffic classes are supported by this switch as indicated under

Note: This switch does not support GMRP or GVRP. Therefore, the GMRP and GVRP

functions cannot be enabled from this screen.

Bridge Capabilities. However, the switch supports just two priority queues and only the default port priority can be configured. The switch does not support the configuration of traffic class mapping. Therefore, this parameter under Bridge Settings is set to disabled and cannot be enabled.

Priority

IEEE 802.1p defines up to 8 separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. You can use the Priority menu to configure the default priority for each port, or to display the mapping for the traffic classes as described in the following sections.

Port Priority Configuration

The default priority for all ingress ports is zero. Therefore, any inbound frames that do not have priority tags will be placed in the low priority output queue. Default priority is only used to determine the output queue for the current port; no priority tag is actually added to the frame. You can use the Port Priority Configuration screen to adjust default priority for any port as shown below:

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Management Guide

Parameter Description

Port Numeric identifier for switch port. Default Ingress User Priority Default priority can be set to any value from 0~7, where 0~3 specifies

Number of Egress Traffic Classes Indicates that this switch supports two priority output queues.

the low priority queue and 4~7 specifies the high priority queue.

Port Traffic Class Information

Parameter Description

Port Numeric identifier for switch port.

User Priority Shows that user priorities 0~3 specify the low priority queue and 4~7

specify the high priority queue.

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Configuring VLANs

Use the VLAN menu to create LAN groups and assign switch ports to any of up to 16 groups. In conventional networks with routers, broadcast traffic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that handle a lot of IPX traffic. 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, and provide a more secure and much cleaner network environment. For a more detailed description of how to use VLANs, see “Using Virtual LANs” in Chapter 4.

VLAN Basic Information

The VLAN Basic Information screen displays basic information on the VLAN type supported by this switch.

Parameter Description

VLAN Version Number The VLAN version used by this switch as specified in the IEEE 802.1Q

Max. VLAN ID Maximum VLAN ID recognized by this switch. Max. Supported VLANs Maximum number of VLANs that can be configured on this switch.

Current Number of VLANs The number of VLANs currently configured on this switch. Configured

standard.

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Management Guide

VLAN Current Table

Parameter Description

VLAN Entry Delete Count The number of times a VLAN entry has been deleted from this table.

VLAN ID The ID for the VLAN currently displayed. Up Time at Creation The value of sysUpTime (System Up Time) when this VLAN was created.

Status Shows that this VLAN was added to the switch as a static entry. Egress Ports Shows the ports which have been added to the displayed VLAN group.

Untagged Ports Shows the untagged VLAN port members.

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VLAN Static List

Use this screen to create or remove VLAN groups.

Parameter Description

Current Lists all the current VLAN groups created for this system. Up to 16 VLAN

New Allows you to specify the name and numeric identifier for a new VLAN group.

Status Enables/disables the specified VLAN.

Add Adds a new VLAN group to the current list. Remove Removes a VLAN group from the current list. If any port is assigned to this

groups can be defined. To allow this switch to participate in external VLAN groups, you must use the VLAN ID for the concerned external groups.

(The VLAN name is only used for management on this system; it is not added to the VLAN tag.)

group as untagged, it will be reassigned to VLAN group 1 as untagged.

VLAN Static Table

Use this screen to modify the settings for an existing VLAN. You can add/delete port members for a VLAN and disable or enable VLAN tagging for any port. (Note that VLAN 1 is fixed as an untagged VLAN containing all ports, and cannot be modified via this screen.)

Parameter Description

VLAN The ID for the VLAN currently displayed.

Range: 1-2048

Name A user-specified symbolic name for this VLAN.

String length: 8 alphanumeric characters

Status Enables/disables the specified VLAN.

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Management Guide

Use the screens shown below to assign ports to the specified VLAN group as an IEEE 802.1Q tagged port. Assign ports as tagged if they are connected to 802.1Q VLAN compliant devices. If the port is connected to VLAN-unaware devices, frames will passed to the untagged VLAN group this port has been assigned to under VLAN Port Configuration.

Parameter Description

Egress Ports Adds ports to the specified VLAN. Forbidden Egress Ports Prevents a port from being automatically added to this VLAN via GVRP.

Note that GVRP is not supported by this switch.

VLAN Static Membership by Port

Use the screen shown below to assign VLAN groups to the selected port. To perform detailed port configuration for a specific VLAN, use the VLAN Static Table.

Parameter Description

Port Number Port number on the switch selected from the upper display panel.

Add/Remove Add or remove selected VLAN groups for the port indicated in the Port

Number field.

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VLAN Port Configuration

Use this screen to configure port-specific settings for IEEE 802.1Q VLAN features.

Parameter Description

PVID The VLAN ID assigned to untagged frames received on this port. Use the

Acceptable Frame Type This switch accepts “All” frame types, including VLAN tagged or VLAN

Ingress Filtering If set to “True,” incoming frames for VLANs which do not include this port in

Note: This switch does not support GVRP. Therefore, the GVRP Status parameter is

set to disabled and cannot be enabled. The other GVRP parameters will always display zeros.

PVID to assign ports to the same untagged VLAN.

untagged frames. Note that all VLAN untagged frames received on this port are assigned to the PVID for this port.

their member set will be discarded at the inbound port.

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Management Guide

IGMP Multicast Filtering

Configuring IGMP

This protocol allows a host to inform its local switch/router that it wants to receive transmissions addressed to a specific multicast address group. Use the IGMP Configuration screen to set key parameters for multicast filtering as shown below.

Parameter Description

IGMP Status If enabled, the switch will monitor network traffic to determine which

Act as IGMP Querier If enabled, the switch can serve as the “querier,” which is responsible

IGMP Query Count The maximum number of queries issued for which there has been no

IGMP Report Delay The time (in minutes) between receiving an IGMP Report for an IP

hosts want to receive multicast traffic.

for asking hosts is they want to receive multicast traffic. (Not available for the current firmware release.)

response before the switch takes action to solicit reports.

multicast address on a port before the switch sends an IGMP Query out that port and removes the entry from its list.

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IP Multicast Registration Table

Use the IP Multicast Registration Table to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID.

Parameter Description

VLAN ID VLAN ID assigned to this multicast group.

Multicast IP Address IP address for specific multicast services. Dynamic Port List The switch ports registered for the indicated multicast service.

Port Menus

Port Information

The Port Information screen displays the port status and link state, as well as the flow control in use. To change any of the port settings, use the Port Configuration menu. The parameters are shown in the following figure and table.

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Parameter Description

Admin Status Shows if the port is enabled or not. Link Status Indicates if the port has a valid connection to an external device.

Speed Status Indicates that the port is connected at 1000 Mbps.. Duplex Status Indicates that the port is connected at full duplex.

Flow Control Status Shows if flow control is in use. Flow control can eliminate frame loss by

“blocking” traffic from end stations connected directly to the switch. Standard IEEE 802.3x full-duplex flow control is used.

Port Configuration

Use the Port Configuration menus to configure any port on the switch.

Parameter Default Description

Admin Status Enable Allows you to disable a port due to abnormal behavior (e.g.,

Duplex Mode 1000M-Full-Duplex Used to set the duplex mode to full duplex or auto-negotiation. The

Flow Control Enable Used to enable or disable flow control. Flow control can eliminate

excessive collisions), and then re-enable it after the problem has been resolved. You may also disable a port for security reasons.

default for all ports is to force full-duplex.

frame loss by "blocking" traffic from end stations or segments connected directly to the switch when its buffers fill. Standard IEEE

802.3x full-duplex flow control is used.

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CheetahSwitch Workgroup-4508

Port Mirroring Configuration

You can mirror the traffic from a target port to an analysis port for real-time analysis. You can then attach a logic analyzer or RMON probe to the analysis port and study the traffic crossing target port in a completely unobtrusive manner. When mirroring a port, note that the analysis port must be included in the same VLAN as the monitored port.

Use Port Monitoring Configuration to set up analysis ports as shown below:

Parameter Description

Capturing State Enables or disables the mirror function. Analyzer Port The port that will "duplicate" or "mirror" all the traffic happening on the monitored

Analyzed Port The port whose traffic will be monitored.

port.

Port Statistics

Use the Port Statistics menu to display Etherlike or RMON statistics for any port on the switch. The statistics displayed are indicated in the following figure and table.

Etherlike Statistics

Etherlike Statistics display key statistics from the Ethernet-like MIB 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). Values displayed have been accumulated since the last system reboot.

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Parameter Description

Alignment Errors For 10 Mbps ports, this counter records alignment errors (mis-

FCS Errors The number of frames received that are an integral number of octets in

Single Collision Frames

Multiple Collision Frames

SQE Test Errors

Deferred Transmissions

Late Collisions The number of times that a collision is detected later than 512 bit-times

Excessive Collisions

Internal Mac Transmit Errors

Carrier Sense Errors

Frames Too Long The number of frames received that exceed the maximum permitted

Internal Mac Receive Errors

1: The values will always be zero because these statistics are not supported by the internal chip set.

synchronized data packets). For 100 Mbps ports, this counter records the sum of alignment errors and code errors (frames received with rxerror signal).

length but do not pass the FCS check.

The number of successfully transmitted frames for which transmission is inhibited by exactly one collision.

A count of successfully transmitted frames for which transmission is inhibited by more that one collision.

A count of times that the SQE TEST ERROR message is generated by the PLS sublayer.

A count of frames for which the first transmission attempt on a particular interface is delayed because the medium was busy.

into the transmission of a packet. The number of frames for which transmission failed due to excessive

collisions.

The number of frames for which transmission failed due to an internal MAC sublayer transmit error.

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

frame size.

The number of frames for which reception failed due to an internal MAC sublayer receive error.

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RMON Statistics

RMON Statistics display key statistics for each port or media module from RMON group 1. (RMON groups 2, 3 and 9 can only be accessed using SNMP management software such as AccView.) The following screen displays overall statistics on traffic passing through each port. RMON statistics provide access to a broad range of statistics, including a total count of different frame types passing through each port. Values displayed have been accumulated since the last system reboot.

Parameter Description

Drop Events The total number of events in which packets were dropped due to lack

Received Bytes Total number of bytes of data received on the network. This statistic

Received Frames The total number of frames (bad, broadcast and multicast) received. Broadcast Frames The total number of good frames received that were directed to the

Multicast Frames The total number of good frames received that were directed to this

CRC/Alignment Errors For 10Mbps ports, the counter records CRC/alignment errors (FCS or

Undersize Frames The total number of frames received that were less than 64 octets long

Oversize Frames The total number of frames received that were longer than 1518 octets

Fragments The total number of frames received that were less than 64 octets in

of resources.

can be used as a reasonable indication of Ethernet utilization.

broadcast address. Note that this does not include multicast packets.

multicast address.

alignment errors). For 100Mbps ports, the counter records the sum of CRC/alignment errors and code errors (frame received with rxerror signal).

(excluding framing bits, but including FCS octets) and were otherwise well formed.

length (excluding framing bits, but including FCS octets) and had either an FCS or alignment error.

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