Dell PowerConnect 3248 System User's Manual
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Dell PowerConnect 3248 System User's Manual

Dell PowerConnect 3248 System User's Manual

Fast ethernet managed switch
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Dell™ PowerConnect™ 3248 Systems User's Guide
Caution: Safety Instructions
Introduction
Installation
Management Interface
VLANs
Appendix
Notes, Notices, and Cautions
NOTE:
A NOTE indicates important information that helps you make better use of your computer.
NOTICE:
A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
CAUTION:
A CAUTION indicates a potential for property damage, personal injury, or death.
Information in this document is subject to change without notice.
© 2002 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, PowerConnect, Dimension, Inspiron, Dell Precision, OptiPlex, Latitude, and DellNet are trademarks of Dell Computer Corporation;
Microsoft and Windows are registered trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation
disclaims any proprietary interest in trademarks and trade names other than its own.
August 2002    P/N 9P140     Rev. A01

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  • Page 1 Microsoft and Windows are registered trademarks of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 2: Management Features

    Management information base (MIB) II (RFC 1213) Interfaces Evolution MIB (RFC 2863) Ethernet-like MIB (RFC 2665) Bridge MIB (RFC 1493) Extended Bridge MIB (RFC 2674) RMON MIB (RFC 2819) Entity MIB (RFC 2737) RADIUS authentication client MIB (RFC 2618) Dell PowerConnect 3248 Private MIB...

  • Page 3: Front Panel Components

    Front-Panel Components The front panel of the switch contains the console port, all of the Ethernet ports, LEDs, and the Mode select button. As shown in the following figure, the switch has three system LEDs and one LED for each port. The following sections describe the front panel in more detail. PWR LED The PWR (power) LED shows the general operating status of the system.

  • Page 4: Back Panel Descriptions

    The switch supports the Dell PowerConnect RPS-600 external redundant power system. NOTE: See the RPS-600 documentation for more information. CAUTION: Do not use the switch with any redundant power system other than the Dell PowerConnect RPS-600. Management The following sections describe options for managing the switch. Web-Based Interface NOTE: To access the switch through a web browser, the computer running the web browser must have IP-based network access to the switch.
  • Page 5 RFC 2618 RADIUS authentication client MIB Dell PowerConnect 3248 Private MIB Back to Contents Page  ...

  • Page 6: Installation

    The switch supports the Dell PowerConnect RPS-600 external redundant power system. NOTE: See the RPS-600 documentation for more information. CAUTION: Do not use the switch with any redundant power system other than the Dell PowerConnect RPS-600. Connecting the Console Port...

  • Page 7: Password Protection

    The switch provides an RS-232 serial port that enables a connection to a computer or terminal for monitoring and configuring the switch. This port is a male DB-9 connector, implemented as a data terminal equipment (DTE) connection. To use the console port, you need the following equipment: A terminal or a computer with both a serial port and the ability to emulate a terminal A null modem or crossover RS-232 cable with a female DB-9 connector for the console port on the switch To connect a terminal to the console port:...

  • Page 8: Snmp Settings

    NOTICE: CLI configuration commands only modify the running configuration file and are not saved when the switch is rebooted. To save all your configuration changes in nonvolatile storage, you must use the copy command to copy the running configuration file to the startup configuration. SNMP Settings Simple Network Management Protocol (SNMP) is a protocol designed specifically for managing devices on a network.

  • Page 9: Connecting Devices To The Switch

    Before you can assign a static IP address to the switch, you must obtain the following information from your network administrator: IP address for the switch Default gateway for the network Network mask for the network To assign a static IP address to the switch: 1.

  • Page 10: Management Interface

    Back to Contents Page Management Interface Dell™ PowerConnect™ 3248 Systems User's Guide   Web Pages   VLAN   System   Class of Service   Switch   Link Aggregation   Ports   SNMP   Address Table   Multicast Support   Spanning Tree   Statistics With web-based management, you can configure the PowerConnect 3248 Fast Ethernet Managed Switch and monitor the system using a web browser.

  • Page 11: General Information

    Switch The Switch page contains all system operations and general information. It includes links to the following options: General — Allows you to view general system information and perform general administration. IP Address — Allows you to view or edit Internet Protocol (IP) parameters. Security —...
  • Page 12 CLI Commands The following table summarizes the equivalent CLI commands for items in the Switch/General/Asset page. Command Usage show system Displays system information hostname name Specifies or modifies the system name for this device snmp-server contact string Sets the system contact (sysContact) string snmp-server location text Sets the system location string Example...
  • Page 13 ----------------- DONE ------------------ Health The Health page contains the following information: Internal Power Status Redundant Power Status The power status is indicated by the following icons: Green check — Power is connected and operating. Red cross — Power is connected but has failed. Not present —...
  • Page 14 Microcode Version Loader Version Boot-ROM Version Operation Code Version Total Port Number Role Service Tag Serial Number CLI Commands The following table summarizes the equivalent CLI command for items in the Switch/General/Versions page. Command Usage show Displays hardware and software version information for the system, as well as the unit's version power status Example...
  • Page 15 CLI Commands The following table summarizes the equivalent CLI commands for items in the Switch/General/Logs page. Command Usage show logging {flash | ram} Displays the logging configuration for system and event messages flash — event history stored in flash memory (permanent memory). ram —...

  • Page 16: Cli Commands

    CLI Commands The following table summarizes the equivalent CLI commands for items in the Switch/IP Address page. Command Usage ip address {ip-address Sets the primary IP address for this device. Use the no form command to netmask | bootp | dhcp} remove the IP address, or to disable IP address assignment through BOOTP or DHCP.

  • Page 17: Radius Settings

    Passwords RADIUS Settings Passwords You should change the default passwords to be sure that your system is secure: NOTE: The default user names are admin and guest, and the corresponding passwords are admin and guest. If you log in as guest (Normal Exec level), you can only view page information and change the guest password.

  • Page 18: Firmware Upgrade

    Server IP Address — Identifies the IP address of the RADIUS server. Server Port Number — Identifies the User Datagram Protocol (UDP) port number used by the RADIUS server. Secret Text String — Specifies the text string that is shared between the switch and the RADIUS server. Number of Server Transmits —...
  • Page 19 Remove Operation Code Image File — Deletes a software file from the switch. Start-Up Operation Code File Name — Indicates which Operation Code file you want to run. Select the filename from the drop-down menu. Uploading Operation Code to a Server 1.
  • Page 20 Destination file name: 0126.bix Console# Configuration From the Configuration page you can save and restore switch configuration settings. NOTE: The switch is shipped with one default configuration file (Factory_Default_ Config.cfg) installed, which is set as the start- up file. This file cannot be removed from the system. The Configuration page contains the following editable fields: Transfer Configuration to Server —...

  • Page 21: Copying The Running Configuration To A File

    Copying the Running Configuration to a File 1.  In the Copy Running Config to File field, specify a filename for the configuration file (with no more than 32 characters). If the filename already exists, it replaces the file. The filename cannot be the same as the factory default configuration file, Factory_Default_Config.cfg. 2.

  • Page 22: Port Configuration

    Console#reload System will be restarted, continue <y/n>? y Console# Ports The Port Manager contains links to the following options: Port Configuration Trunk Configuration Broadcast Control Port Mirroring Port Configuration On the Port Configuration page, you can view and edit port parameters. For each port number listed in the Port column, you can change the following parameters listed by column name on the screen: Name/Type —...

  • Page 23: Trunk Configuration

    interface ethernet unit/port Configures an Ethernet port interface and enters interface configuration mode. shutdown Disables an interface. To restart a disabled interface, use the no form command. description string Adds a description to an interface. speed-duplex {1000full | 100full | Configures the speed and duplex mode of a given interface when 100half | 10full | 10half} autonegotiation is disabled.

  • Page 24: Broadcast Control

    CLI Commands The following table summarizes the equivalent CLI commands for items in the Ports/Trunks Configuration page. Command Usage interface port-channel channel-id Configures a trunk and enters interface configuration mode. shutdown Disables a trunk interface. To restart a disabled interface, use the no form command. description string Adds a description to a trunk interface.

  • Page 25: Port Mirroring

    Command Usage switchport broadcast packet-rate rate Configures broadcast storm control (applies to all ports) Example Console(config)#interface ethernet 1/5 Console(config-if)#switchport broadcast packet-rate 600 Console(config-if)# Port Mirroring From the Port Mirroring page, you can configure up to nine port mirror sessions by setting source and destination port pairs. Port mirroring helps you debug a network.

  • Page 26: Static Addresses

    Dynamic Addresses Address Aging Static Addresses From the Static Addresses page, you can specify the Media Access Control (MAC) address and port number of systems that are to remain available to the switch for an indeterminate amount of time. The following options are available: Static Address Counts —...

  • Page 27: Address Aging

    CLI Commands The following table summarizes the equivalent CLI command for items in the Address Table/Dynamic Addresses page. Command Usage show bridge bridge-group [interface] [address [mask]] [vlan Allows you to view classes of entries in the vlan-id] [sort {address | vlan | interface}] bridge-forwarding database Example Console#show bridge 1...

  • Page 28: Spanning Tree

    Spanning Tree The Spanning Tree page contains links to pages that allow you to specify the parameters of the Spanning Tree Protocol: Bridge Settings Port Settings Trunk Settings Bridge Settings The Bridge Settings page contains the following information: Bridge ID — Identifies a unique identifier for the switch in the Spanning Tree. The ID is calculated using the defined Spanning Tree priority of the switch and its MAC address.

  • Page 29: Port Settings

    bridge bridge-group max-age seconds Configures the spanning tree bridge maximum age globally for the switch. bridge bridge-group priority priority Configures the spanning tree priority globally for the switch. show bridge group bridge-group Shows the spanning tree configuration. [interface] Example Console(config)#bridge 1 spanning-tree Console(config)#bridge 1 forward-time 15 Console(config)#bridge 1 hello-time 2 Console(config)#bridge 1 max-age 20...

  • Page 30: Trunk Settings

    bridge-group bridge-group path-cost cost Configures the spanning tree path cost for the specified port bridge-group bridge-group priority priority Configures the priority for the specified port bridge-group bridge-group portfast Sets a port to fast forwarding state Example Console(config)#interface ethernet 1/5 Console(config-if)#bridge-group 1 path-cost 50 Console(config-if)#bridge-group 1 priority 0 Console(config-if)#bridge-group 1 portfast Trunk Settings...

  • Page 31: Vlan Membership

    VLAN Membership Port Settings Trunk Settings GVRP VLAN Membership On the VLAN Membership page, you define VLAN groups. The following options are available: Show VLAN — Select the VLAN for which you want to edit the membership setting. Name — Specifies user-defined name of the VLAN. VLAN ID —...
  • Page 32 CLI Commands The following table summarizes the equivalent CLI commands for items in the VLAN/VLAN Membership page. Command Usage vlan database Allows you to enter VLAN database mode. vlan vlan-id [name vlan-name] Configures a VLAN. media ethernet [state {suspend | active}] Use the no form command to restore the default or delete a VLAN.
  • Page 33 Acceptable Frame Type — Allows you to set the switch port to accept all frame types, including VLAN tagged or VLAN untagged frames, or only tagged frames. Ingress Filtering — Discards incoming frames for VLANS that do not include the ingress port in their member set, if enabled. GVRP Status —...
  • Page 34 GARP Join Timer — Specifies the interval (in centiseconds) between transmitting requests/queries to participate in a VLAN group. (The range is 20 to 1000 centiseconds.) GARP Leave Timer — Specifies the interval (in centiseconds) that a trunk waits before leaving a VLAN group. GARP Leave Timer should be set to more than twice the join time.

  • Page 35: Class Of Service

    show gvrp configuration [interface] Shows whether GVRP is enabled. Example Console(config)#bridge-ext gvrp Console(config)# Class of Service Class of Service (CoS) allows you to assign priority to data packets when traffic in the switch is buffered due to congestion. This switch supports CoS by using four priority queues for each port.

  • Page 36: Traffic Classes

    CLI Commands The following table summarizes the equivalent CLI command for items in the Class of Service/Trunk Settings page. Command Usage switchport priority default Sets a priority for the incoming untagged frames or the priority of frames default-priority-id received by the device connected to the specified interface Example Console(config)#interface port-channel 2 Console(config-if)#switchport priority default 5...

  • Page 37: Queue Scheduling

    Console(config-if)#queue cos-map 2 4 5 Console(config-if)#queue cos-map 3 6 7 Console(config-if)#exit Console(config)#exit Console#show queue cos-map Information of Eth 1/1 Queue ID Traffic class -------- -------------      0       0 1 2       1       3       2       4 5       3       6 7  Queue Scheduling In the Queue Scheduling page, you can configure Weighted Round Robin (WRR) queueing for the switch ports. The following options are available: WRR Setting Table —...

  • Page 38: Ip Precedence/Dscp Priority Status

    -------- ------ 0           1  1           4  2           16  3           64  Console# Layer 3/4 Priority The Layer 3/4 Priority page contains links to the following pages: IP Precedence/DSCP Priority Status IP Port Priority IP Precedence/DSCP Priority Status You can assign Layer 3/4 priority to traffic in the switch by considering the settings in the Type of Service (ToS) field in the IP header of a frame. The ToS field can contain an IP Precedence or the more recently released Differentiated Services Code Point (DSCP) value, depending on whether you have DSCP or IP Precedence-aware devices in your network.
  • Page 39 To change a table setting, click the entry in the IP Precedence Priority Table, type the new CoS value in the Class of Service Value box, and then click Apply Changes. If you don't want to save the changes, click Refresh. In the IP DSCP Priority section, you can map DSCP values to traffic class values.

  • Page 40: Ip Port Priority

    Command Usage map ip precedence Enables IP precedence mapping (IP ToS) for the switch map ip precedence ip-precedence-value Sets IP precedence priority (IP ToS priority) for a port or trunk cos cos-value interface (applies to all ports) show map ip precedence [interface] Shows the IP precedence priority map map ip dscp Enables IP DSCP mapping for the switch...

  • Page 41: Link Aggregation

    CLI Commands The following table summarizes the equivalent CLI commands for items in the Class of Service/Layer 3/4 Priority/IP Port Priority page. Command Usage map ip port Global configuration level enables IP port mapping for the switch map ip port port-number cos Interface configuration level sets IP port priority for a port or trunk interface cos-value (applies to all ports)
  • Page 42 If the target switch has also enabled LACP on the connected ports, the trunk will automatically activate. If more than four ports attached to the same target switch have LACP enabled, the additional ports enter standby mode and will only be enabled if one of the active links fails.
  • Page 43 On the Communities page, you can create different communities and customize access. The public string has read-only privileges by default. The following options are available: SNMP Community Capability — Indicates that the switch supports up to five community strings. Community List — Displays a list of the community strings currently configured. Default strings are public (read-only access) and private (read/write access).

  • Page 44: Multicast Support

    CLI Commands The following table summarizes the equivalent CLI commands for items in the SNMP/Traps page. Command Usage snmp-server host host-addr community-string Specifies the recipient of a SNMP notification operation snmp-server enable traps [authentication | link-up- Enables the device to send SNMP traps down] Example Console(config)#snmp-server host 10.1.19.23...
  • Page 45 Act as IGMP Querier — Enables the switch as Querier. When Querier is enabled, the switch can serve as the Querier, which is responsible for asking hosts if they are supposed to receive multicast traffic. IGMP Query Count (2–10) — Sets the maximum number of queries issued for which there has been no response before the switch takes action to solicit reports.

  • Page 46: Igmp Member Port Table

      Query time-out: 300 sec   IGMP snooping version: Version 1  Console# IGMP Member Port Table You can use the IGMP Member Port Table page to assign ports that are attached to hosts that are supposed to receive a specific multicast service. The following options are available: VLAN ID —...
  • Page 47 The following options are available: VLAN ID — Specifies the VLAN ID Port/Trunk Toggle Buttons — Allows you to select ports or trunks that are attached to a neighboring multicast router/switch by toggling the value of the port/trunk button: 'S' — Statically attaches a port or trunk to a multicast router/switch ¡...
  • Page 48 Refresh Rate — Specifies the time interval between automatic refreshes Table The Table page lists, in table format, all statistics counters for a specific port or trunk. You must select the port or trunk from the drop-down menus, and then click Query.
  • Page 49     Multi-cast input: 0, Multi-cast output: 1854     Broadcast input: 138, Broadcast output: 165    Ether-like stats:     Alignment errors: 0, FCS errors: 0      Single Collision frames: 0, Multiple collision frames: 0      SQE Test errors: 0, Deferred transmissions: 0      Late collisions: 0, Excessive collisions: 0      Internal mac transmit errors: 0, Internal mac receive errors: 0      Frame too longs: 0, Carrier sense errors: 0    RMON stats:      Drop events: 0, Octets: 435135, Packets: 3430      Broadcast pkts: 303, Multi-cast pkts: 1854     Undersize pkts: 0, Oversize pkts: 0      Fragments: 0, Jabbers: 0      CRC align errors: 0, Collisions: 997976404      Packet size <= 64 octets: 2584, Packet size 65 to 127 octets: 211      Packet size 128 to 255 octets: 198, Packet size 256 to 511 octets: 317      Packet size 512 to 1023 octets: 95, Packet size 1024 to 1518 octets: 25  Console# Console#configure Console(config)#clear counters ethernet 1/17 Back to Contents Page  ...

  • Page 50: Vlans And Frame Tagging

    Back to Contents Page VLANs Dell™ PowerConnect™ 3248 Systems User's Guide   VLANs and Frame Tagging   VLAN Configuration   Automatic VLAN Registration   VLAN Examples VLANs and Frame Tagging The PowerConnect 3248 switch supports IEEE 802.1Q-compliant virtual LANs (VLANs). This capability provides a highly efficient architecture for establishing VLANs within a network and for controlling broadcast/ multicast traffic between workgroups.

  • Page 51: Port Overlapping

    belongs. Port Overlapping Port overlapping can be used to allow access to commonly shared network resources among different VLAN groups, such as file servers or printers. If you implement VLANs that do not overlap but still need to communicate, you must connect them using a router or Layer 3 switch. Forwarding Tagged/Untagged Frames Ports can be assigned to multiple tagged or untagged VLANs.

  • Page 52: Vlan Examples

    VLAN Examples The following four examples demonstrate typical web-interface VLAN configurations for the switch. Example 1 demonstrates a simple two-group VLAN setup. Example 2 demonstrates a more elaborate setup, illustrating all possible scenarios for a comprehensive understanding of tagged VLANs. Examples 3 and 4 show how GVRP can be used to automatically propagate VLANs across a network.
  • Page 53 Example 2 Example 2 illustrates a more complicated setup and demonstrates several scenarios for configuring VLANs. 1.  Set up four VLANs, as shown in following table. All switch ports remain as members of the default VLAN (VLAN ID 1). VLAN ID Name Port Members (Tagged/Untagged) Admin 1 (U), 2 (U), 10 (U)
  • Page 54 Port 01: 2 Port 05: 5 Port 09: 1 Port 13: 1 Port 02: 2 Port 06: 1 Port 10: 2 Port 14: 15 Port 03: 1 Port 07: 1 Port 11: 10 Port 15: 1 Port 04: 5 Port 08: 1 Port 12: 10 Port 16: 1 The PVID of a port must be set to a VLAN ID of which the port is an untagged member.
  • Page 55 2.  From the core switch web interface, go to the VLAN/GVRP page and ensure that GVRP Status is set to enabled. 3.  For the other three switches, ensure that GVRP is enabled globally in the VLAN/GVRP page, as well as on ports connecting to the core switch in the VLAN/Port Settings page.
  • Page 56 4.  For each of the three wiring-closet switches, ensure that GVRP is enabled globally in the VLAN/GVRP page. 5.  For each of the three wiring-closet switches, ensure that GVRP is disabled for each port in the VLAN/Port Settings page. 6.  For the core switch, ensure that GVRP is enabled globally in the VLAN/GVRP page, as well as on ports connecting to the wiring-closet switches in the VLAN/Port Settings page.

  • Page 57: Troubleshooting

      Technical Specifications   Getting Help   Regulatory Notices Troubleshooting This section explains how to isolate and diagnose problems with the switch. If you have a problem that is not listed here and you cannot solve it, contact Dell (see "Contacting Dell"). LEDs All light-emitting diodes (LEDs) are off.
  • Page 58 The switch is powered up. ¡ You have a valid network connection to the switch and the port you are using has not been disabled. ¡ Simple Network Management Protocol (SNMP) management software cannot access the switch. Ensure that: You have configured the switch's management VLAN with a valid IP address, subnet mask, and default gateway. ¡...
  • Page 59 In the preceding figure, the management VLAN is different on each switch, with the Layer 3 switch interconnecting the VLANs. The ports that interconnect the switches are configured as tagged ports. The ports on the Layer 3 switch that connect to the other switches must be configured as members of the management VLAN for each switch.

  • Page 60: Technical Specifications

    The Xmodem file send window displays the progress of the download procedure. NOTICE: The download file must be a PowerConnect 3248 binary software file from Dell. 10.  After the file has been downloaded, press <r> for runtime code or <d> for diagnostic code when Update Image File: appears.

  • Page 61: Getting Help

    Online Services You can access Dell Support at support.dell.com. Select your region on the WELCOME TO DELL SUPPORT page, and fill in the requested details to access help tools and information. You can contact Dell electronically using the following addresses: World Wide Web www.dell.com/...

  • Page 62: Problems With Your Order

    Automated Order-Status Service To check on the status of any Dell products that you have ordered, you can go to support.dell.com, or you can call the automated order-status service. A recording prompts you for the information needed to locate and report on your order. For the telephone number to call, see the...
  • Page 63 Toll-free numbers are for use within the country for which they are listed. When you need to contact Dell, use the electronic addresses, telephone numbers, and codes provided in the following table. If you need assistance in determining which codes to use, contact a local or an international operator.
  • Page 64 General Support 1-800-805-7541 Chile (Santiago) Sales, Customer Support, and Technical Support toll-free: 1230-020-4823 Country Code: 56 City Code: 2 China (Xiamen) Tech Support website: support.ap.dell.com/china   Tech Support E-mail: cn_support@dell.com   Country Code: 86 Tech Support Fax 818 1350 City Code: 592 Home and Small Business Technical Support toll-free: 800 858 2437...
  • Page 65 El Salvador General Support 01-899-753-0777 Finland (Helsinki) Website: support.euro.dell.com    E-mail: fin_support@dell.com   International Access Code: 990 E-mail Support (servers): Nordic_support@dell.com    Technical Support 09 253 313 60 Country Code: 358 Technical Support Fax 09 253 313 81 City Code: 9 Relational Customer Care 09 253 313 38 Home/Small Business Customer Care 09 693 791 94...
  • Page 66 Technical Support outside of Japan (Dimension and 81-44-520-1435 Inspiron) City Code: 44 Technical Support (Dell Precision™, OptiPlex™, and  toll-free: 0120-1984-33 Latitude™) Technical Support outside of Japan (Dell Precision, 81-44-556-3894 OptiPlex, and Latitude) 24-Hour Automated Order Service 044 556-3801 Customer Care 044 556-4240 Business Sales Division (up to 400 employees) 044 556-1465 Preferred Accounts...
  • Page 67 Home/Small and Medium Business Customer Care 020 674 42 00 City Code: 20 Corporate 020 674 50 00 Corporate Fax 020 674 47 79 Corporate Customer Care 020 674 43 25 New Zealand E-mail (New Zealand): nz_tech_support@dell.com    E-mail (Australia): au_tech_support@dell.com    International Access Code: 00 Home and Small Business 0800 446 255 Government and Business 0800 444 617...
  • Page 68   Vasby) E-mail: swe_support@dell.com   International Access E-mail Support for Latitude and Inspiron:   Code: 00 Swe-nbk_kats@dell.com E-mail Support for OptiPlex: Swe_kats@dell.com   Country Code: 46 E-mail Support for Servers:   Nordic_server_support@dell.com City Code: 8 Technical Support 08 590 05 199 Relational Customer Care 08 590 05 642...
  • Page 69 (Customer Service and Technical Support) Financial Services website:     www.dellfinancialservices.com Financial Services (lease/loans) toll-free: 1-877-577-3355 Financial Services (Dell Preferred Accounts [DPA]) toll-free: 1-800-283-2210 Business (businesses with <400 employees; businesses with 400+ employees and their employees)  Service and Technical Support toll-free: 1-800-822-8965 Public (government, education, and healthcare) ...

  • Page 70: Regulatory Notices

    Most Dell computer systems (and other Dell digital apparatus) are classified by the Industry Canada (IC) Interference-Causing Equipment Standard #3 (ICES- 003) as Class B digital devices. To determine which classification (Class A or B) applies to your computer system (or other Dell digital apparatus), examine all registration labels located on the bottom or the back panel of your computer (or other digital apparatus).

  • Page 71: Vcci Notice (Japan Only)

    RF INTERFERENCE WARNING: This is a Class A product. In a domestic environment this product may cause radio frequency (RF) interference, in which case the user may be required to take adequate measures. A "Declaration of Conformity" in accordance with the preceding directives and standards has been made and is on file at Dell Computer Corporation Products Europe BV, Limerick, Ireland.

  • Page 72: Rack Mounting Of Systems

    Back to Contents Page Caution: Safety Instructions Dell™ PowerConnect™ 3248 Systems User's Guide Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential damage. General Observe and follow service markings. Do not service any product except as explained in your system documentation. Opening or removing covers that are marked with the triangular symbol with a lightning bolt may expose you to electrical shock.

  • Page 73: Modems, Telecommunications, Or Local Area Network Options

    NOTE: Your system is safety-certified as a free-standing unit and as a component for use in a Dell rack cabinet using the customer rack kit. The installation of your system and rack kit in any other rack cabinet has not been approved by any safety agencies. It is your responsibility to have the final combination of system and rack kit in a rack cabinet evaluated for suitability by a certified safety agency.
  • Page 74 site. For information about such batteries, refer to the documentation for the specific card or component. Back to Contents Page  ...

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