3Com HomeConnect ADSL Modem Ethernet CLI User’s Guide Version 1.
3Com Corporation 3800 Golf Road Rolling Meadows, IL 60008 Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
1 ACCESSING THE CONFIGURATION INTERFACE Establishing Communications 1-1 Local Connection 1-1 IBM-PC Compatible Computers Macintosh Computers 1-1 UNIX-Based Computers 1-1 Remote Connection 1-2 2 1-1 CLI COMMAND CONVENTIONS AND TERMINOLOGY Command Structure 2-1 Format 2-1 Parameters 2-1 Values 2-1 Names or Strings 2-1 Network Address Formats 2-2 Abbreviation and Command Completion Control Characters 2-2 Help 2-2 Conventions 2-2 Command Language Terminology 2-3 3 MANUAL SETUP Configuration Overview 3-1 M
Setting Date and Time 3-7 Setting System Identification 3-8 Configuring TELNET Login Access 3-8 Providing TFTP Access 3-9 Setting Password Protection 3-9 Configuration Scripting 3-10 4 FILTERING CAPABILITIES Introduction 4-1 Filtering Capabilities of the 3Com HomeConnect ADSL Modem Ethernet 4-1 Filter Classes 4-1 Filter Types 4-1 Data Filters 4-2 Generic Filters 4-2 Creating Filters 4-2 Filter File Components 4-2 Protocol Sections/Bridge 4-2 Protocol Rules 4-3 Generic Filter Rule 4-4 Step by Step Guide to
Verifying Filter File Syntax 4-8 Showing Filter File Contents 4-8 5 UPGRADING 3COM HOMECONNECT ADSL MODEM ETHERNET OPERATIONAL SOFTWARE Introduction 5-1 Serial Port Update 5-1 3Com Instant Update Process 5-1 3Com FTP Site 5-1 3Com HomeConnect ADSL Modem Ethernet CD Installing Operational Software via DOS 5-2 Update Using Built-in Update Software 5-3 update software ftp 5-3 update software ftp 5-4 update software tftp 5-4 A 5-2 CLI COMMAND DESCRIPTION CLI Commands A-1 AD
delete ip network A-4 delete ip route A-4 delete snmp community A-4 delete snmp trap_community A-4 delete syslog A-5 delete tftp client A-5 delete user A-5 DISABLE A-5 disable bridge access_mac_addresses A-5 disable bridge forwarding A-5 disable bridge spanning_tree A-5 disable ip network A-5 disable link_traps interface A-5 disable port A-5 disable security_option snmp user_access A-5 disable
list bridge access_mac_addresses A-7 list bridge forwarding A-7 list connection events A-8 ..............................................................................
set facility loglevel [level] A-12 set interface A-13 set port A-13 set snmp community A-14 set snmp trap_community A-14 set system A-14 set syslog loglevel [level] A-14 set time
telnet TCP_port A-20 UPDATE A-20 update software ftp A-20 update software tftp A-21 VERIFY A-21 verify filter A-21 TELNET Commands A-21 close A-21 help A-21 send A-21 set_escape A-21 status A-21 CLI Exit Commands A-21 Bye, Exit, Leave, Quit A-21 Logout A-22 Command Features A-22 Command Retrieval A-22 Positional Help A-22 Command Completion A-22 A-22 Output Pause A-22 Command Kill A-22 Comments A-22 TECHNICAL SUPPORT AND LIMITED WARRA
3Com Corporation Limited Warranty YEAR 2000 WARRANTY vii Obtaining Warranty Service viii Warranties exclusive ix Limitation of Liability ix Disclaimer ix Governing Law x vii
1 ACCESSING THE CONFIGURATION INTERFACE This chapter explains how to attach to the configuration interface locally via the console port or remotely via a Telnet session. This chapter also introduces you to the capabilities and conventions associated with management of your 3Com HomeConnect ADSL Modem Ethernet.
1-2 CHAPTER 1: ACCESSING THE CONFIGURATION INTERFACE Remote Connection If you want to attach to the 3Com HomeConnect ADSL Modem Ethernet via the LAN or WAN interface of the unit, you will need to establish a Telnet connection to the unit. The 3Com HomeConnect ADSL Modem Ethernet must have an IP address and an administrative login profile (username and password) in order to connect to it with Telnet.
CLI COMMAND CONVENTIONS AND TERMINOLOGY 2 This chapter describes the command syntax, conventions and terminology used within the Command Line Interface. Reviewing and understanding this chapter is essential for you to understand subsequent chapters. Command Structure Format Commands can be followed by values and/or parameters and values.
2-2 CHAPTER 2: CLI COMMAND CONVENTIONS AND TERMINOLOGY Network Address Formats Many commands require a network address, to define a link to a remote host, workstation or network. Network addresses are shown in this document using the syntax described in the following table: Address Type IP_address ip_net_address mac_address Abbreviation and Command Completion Format a.b.c.d a.b.c.d/mask xx:xx:xx:xx:xx:xx Range 0.0.0.0 to 255.255.255.255 (decimal) 255.255.255.
Command Structure Command Language Terminology 2-3 The CLI command language creates, manages, displays and removes system entities. These entities describe system and network connections and processes. Most of the managed entities in the system are slotted in tables. Some common examples are: ■ Network - defines local and remote networks, network connections, hosts and routers ■ Port - A table of parameters that describes the characteristics of a bridge port.
2-4 CHAPTER 2: CLI COMMAND CONVENTIONS AND TERMINOLOGY
3 MANUAL SETUP This chapter describes how to manually setup the 3Com HomeConnect ADSL Modem Ethernet. Configuration Overview A bridge connects two or more physical networks together to function as a single, large network. The 3Com HomeConnect ADSL Modem Ethernet is a learning bridge. A learning bridge does more than just link networks; it separates network traffic and forwards only the packets that need to be forwarded.
3-2 CHAPTER 3: MANUAL SETUP You modify the profile using set port commands to setup the WAN connection and network information. Remember to save your configuration using the save all command before rebooting your 3Com HomeConnect ADSL Modem Ethernet so that your changes will be written to permanent FLASH memory.
Advanced Bridging 3-3 The 3Com HomeConnect ADSL Modem Ethernet supports Unspecified Bit Rate (UBR) traffic. The modem will normally attempt to use all of the available upstream bandwidth when transmitting data. Optionally, on a bridge port basis, the upstream traffic can be ’shaped’ to use only a portion of the available bandwidth using the Peak Cell Rate parameter. The Peak Cell Rate is specified in cell-per-second.
3-4 CHAPTER 3: MANUAL SETUP The Spanning Tree Priority is the priority assigned to a bridge that is running the Spanning Tree Protocol. It is used for prioritizing the bridges when Spanning Tree is enabled. ■ To change the Spanning Tree Priority, use the command: set bridge spanning_tree_priority Restricting LAN Access Access to the bridging functions of the 3Com HomeConnect ADSL Modem Ethernet can be restricted to certain MAC addresses by using the Access MAC Address feature.
IP Configuration 3-5 set port filter ■ To disable port filtering, use the command: set port filter none IP Configuration To allow remote SNMP and Telnet management of the 3Com HomeConnect ADSL Modem Ethernet you must configure the unit’s IP stack. The IP stack can receive packets from any bridge port.
3-6 CHAPTER 3: MANUAL SETUP name and password. (Maximum character length of login name = 32, password maximum character length = 15.) Configuring an IP Network The 3Com HomeConnect ADSL Modem Ethernet can have more than one IP address (i.e., belong to more than one IP network). To configure an IP address use the add ip network command. Each network has a network name. You will use the network name when entering commands related to the network.
System Administration 3-7 The route will appear as destination 0.0.0.0 in the IP routing table. ■ To delete an IP Static route, use the command: delete ip route Configuring DNS You can configure the 3Com HomeConnect ADSL Modem Ethernet to access a DNS server to resolve host names. This facility is used by the ping, telnet, rlogin and update software ftp commands. DNS server entries are stored in the DNS Server Table.
3-8 CHAPTER 3: MANUAL SETUP The date and time information is provided in the following format: System Date: System UpTime: 02-MAR-1998 05:17:00 2d 08:37:54 You can set the date using the command: set date which sets the system date, and leaves the time unchanged. The format is: dd-mmm-yyyy. The month should be the first three characters of the month name. The year can be either 2 or 4 digits - 99 or 1999.
System Administration Providing TFTP Access 3-9 Trivial File Transfer Protocol (TFTP) provides a simple way to transfer files from one machine to another. The 3Com HomeConnect ADSL Modem Ethernet has a TFTP server that allows you to copy files to or from the unit. All you have to do is set up TFTP access on the 3Com HomeConnect ADSL Modem Ethernet and run a TFTP client program on a workstation.
3-10 CHAPTER 3: MANUAL SETUP Note: This capability is useful for system administrators or users who wish to restrict access to the 3Com HomeConnect ADSL Modem Ethernet. Care should be taken to remember the configured password. If the password is forgotten, the unit must be sent back to 3Com support to have the feature disabled. Configuration Scripting The 3Com HomeConnect ADSL Modem Ethernet provides a scripting utility that will generate the CLI commands required to recreate a given configuration.
FILTERING CAPABILITIES 4 Introduction The 3Com HomeConnect ADSL Modem Ethernet provides an extensive set of data filtering capabilities. For instance, filters can accept packets only from specific addresses to provide added security, or filters can be added to reduce network traffic and improve overall performance. Packet filters control inter-network data transmission by accepting or rejecting the passage of specific packets through network interfaces based on packet header information.
4-2 CHAPTER 4: FILTERING CAPABILITIES Data Filters Generic Filters ■ Data filters - based on protocol-specific packet information. ■ Generic filters - based on packet structure. Data filters control network access based on the protocol and source / destination address of the packet. Generic filters are protocol-independent and are specified by byte and offset values in a packet.
Creating Filters 4-3 ■ If you do not specify a protocol section in the filter file, no filtering will occur and packets of that protocol type will be accepted. ■ If you specify a protocol section but do not define any rules, an error will occur. To comment out the protocol section, you must place a pound (#) sign before the section header and before all rules defined in the section. Protocol Rules Protocol rules determine which packets may and may not access the network.
4-4 CHAPTER 4: FILTERING CAPABILITIES The OR operation can be implemented by successive rules. For example, to accept a packet if the source address is xxx, or the destination address is yyy, the following rules are used: BR-ETH: 1 ACCEPT src-addr=00-20-69-00-00-01; 2 ACCEPT dst-addr=00-20-69-00-00-02; 999 DENY; The following table describes the keywords for the bridge protocol section and their legal operators used in the rule syntax. (xx is a hex number).
Assigning Filters 4-5 will define in the future. Also, use the # sign to add comments or what you expect the filter to do for future reference. 4 Enter the rules you are defining. Observe the following guidelines. ■ Begin each rule with a unique line number ranging from 1 - 998. ■ Arrange rules in increasing line number order within each protocol section. ■ Arrange rules so that the rules you expect to be matched most frequently are toward the top of the list ■ Delimit each rule with a semi-colon.
4-6 CHAPTER 4: FILTERING CAPABILITIES ■ Interfaces ■ Ports Interface Filters You can configure interface filters for any interface. Interface filters control access to all networks available for both modem and non-modem interfaces. You can specify whether a filter applies to packets entering the interface (input filter) or leaving the interface (output filter). The bridge examines the filtering rules to determine whether the interface accepts or rejects the packet.
Managing Filters 4-7 Interface name is eth:1 for the Ethernet interface and atm:1 for the ATM interface. For example, to apply an input filter to the ethernet interface: set interface eth:1 input_filter filter.flt When assigning the filter to the Ethernet interface, you must turn off filter access by entering the CLI command set interface eth:1 filter_access off. For more information about the filter access, refer to the Setting Filter Access section below.
4-8 CHAPTER 4: FILTERING CAPABILITIES If the syntax is invalid, the filter is still added to the managed list with a status of verify failed. To correct filter file errors, you must make the changes to the original filter file using a text editor, and re-TFTP the file to the bridge’s FLASH memory. Then use the verify filter command to check the filter file syntax.
UPGRADING 3COM HOMECONNECT ADSL MODEM ETHERNET OPERATIONAL SOFTWARE 5 Introduction Serial Port Update The 3Com HomeConnect ADSL Modem Ethernet operational software is stored in the unit’s FLASH memory. There are two ways to update the operational software: ■ You can load new software through the serial console port. ■ You can load new software using the unit’s built-in FTP or TFTP client software.
5-2 CHAPTER 5: UPGRADING 3COM HOMECONNECT ADSL MODEM ETHERNET OPERATIONAL SOFTWARE navigate through the directory structure to pub/xdsl/hceth. From this site, you can obtain document updates from the DOCS subdirectory and code updates from the BINARIES subdirectory. The code updates are stored in two forms in the BINARIES subdirectory. One form is a self-extracting executable (with the extension .
Update Using Built-in Update Software 5-3 3 Power off your 3Com HomeConnect ADSL Modem Ethernet. 4 Open a DOS window on your workstation. 5 Change to the directory containing the new operational software. If you obtained the software from the Installation CD or using Instant Update the default directory is c:\Program Files\3Com\3Com HomeConnect ADSL Modem Ethernet\Update. The DL.BAT batch file uses the Com 1 port by default. You can change the port used by editing the DL.BAT file.
5-4 CHAPTER 5: UPGRADING 3COM HOMECONNECT ADSL MODEM ETHERNET OPERATIONAL SOFTWARE ■ username ■ password If you are obtaining the code update from the 3Com FTP site, you would use the command: update software ftp ■ server ftp.3com.com ■ path /pub/xdsl/hceth/binary ■ username anonymous ■ password where is the NAC file to load and is your email address (i.e., name@company.com).
CLI COMMAND DESCRIPTION A CLI Commands ADD Use the ADD command to define: ■ networks you will connect to ■ SNMP communities ■ users who can telnet to the unit Note that some parameters have default values. add bridge access_mac_address add dns server Adds a MAC Address to the Access MAC table. When the Access MAC feature is enabled, only MAC Addresses in the Access MAC Table will be bridged. Parameters Description The MAC address being granted access.
A-2 APPENDIX A: CLI COMMAND DESCRIPTION TFTP to export the updated file to the system’s FLASH file system, and use the verify filter command to check the filter’s syntax. Parameters add ip defaultroute gateway Description Designation of a filter file, up to twenty ASCII characters. { metric [1] } Defines a default gateway IP router, which acts as the default route for IP packets destined for remote hosts.
CLI Commands add snmp community A-3 address [IP_address] access [RO | RW] Adds to the list of SNMP authorized users. The community name and IP address of SNMP requests from managers on the network must match the list, which you can see using list snmp communities. Parameters address access add snmp trap_community address Adds to the list of community name/IP address pairs that are allowed to receive SNMP traps.
A-4 APPENDIX A: CLI COMMAND DESCRIPTION Name Password Enabled CAPTURE TEXT Name of the user to be added, up to 32 ASCII characters. User’s password, up to 15 ASCII characters. This indicates whether the user is enabled. Enter YES or NO. capture text Redirects console input into a text file. Input redirection is terminated by Ctrl-D. This command serves as a simple way to create filter files or to create command scripts that can be executed using the DO command.
CLI Commands A-5 delete syslog Deletes the specified IP address from the list of addresses which are authorized to receive syslog information. Use list syslog to see the currently allowed addresses. delete tftp client Deletes the specified IP address from the list of addresses which are authorized to TFTP. Use list tftp clients to see the currently allowed addresses. delete user Deletes a user you previously added to the local user table.
A-6 APPENDIX A: CLI COMMAND DESCRIPTION DO do output [outputfile] Runs a script file that is stored in FLASH memory, which contains a series of CLI commands. ENABLE enable bridge access_mac_addresses Enables the Access MAC feature. When the Access MAC feature is enabled, only MAC Addresses in the Access MAC Table will be bridged. enable bridge forwarding Globally enables bridging. enable bridge spanning_tree Enables the spanning tree algorithm for the bridge connection.
CLI Commands A-7 HELP help Provides information about possible commands and their formats. Typing help alone lists the possible commands. Typing help lists the possible parameters for that command. Typing part of a keyword (command or parameter) and pressing Esc completes the keyword. If you have not yet entered enough of the keyword to be unique, pressing Esc causes the bell to ring. Typing ? after a command string displays the possible keywords and values for that command.
A-8 APPENDIX A: CLI COMMAND DESCRIPTION Fltr - Number of packets received from this MAC station that were filtered out (discarded) Fwd - Number of packets received from this MAC station that were forwarded TxPkt - Number of packets forwarded to this MAC station TxOctets - Number of bytes forwarded to this MAC station list connection events list dns servers list facilities list filters Displays the contents of the Connection Event Table.
CLI Commands ■ list ip arp list ip networks list ip routes list ports list snmp communities or list snmp trap_communities A-9 Interface - interface this IP address uses to connect to the system Displays the contents of the ARP cache.
A-10 APPENDIX A: CLI COMMAND DESCRIPTION list syslog Displays IP addresses which get syslog entries from the system. See add syslog for more information, and delete syslog command to remove entries.
CLI Commands A-11 RENAME rename file Renames files within the FLASH file system. The FLASH file system is a flat file system (no subdirectories). Use the list files command to see what files currently exist. Parameters reset ethernet counters reset port Description Name of the original file. New name for the file Clears the statistics counters for the Ethernet port.
A-12 APPENDIX A: CLI COMMAND DESCRIPTION set bridge aging_time forward_delay spanning_tree_priority Sets parameters for all bridge networks. Parameters aging_time forward_delay spanning_tree_ priority set command Description Interval to wait before aging out MAC addresses that were learned from other LAN segments. The default is 300. Interval bridge waits before bridging packets.
CLI Commands ■ UNUSUAL - an abnormal event, which the system should recover from ■ COMMON - a regularly occurring event that is not frequent ■ VERBOSE - a regular periodic event, e.g. a routing update message ■ DEBUG - for debugging purposes only set interface A-13 filter_access [ON | OFF] input_filter output_filter Sets filter parameters for the specified protocol on the specified interface.
A-14 APPENDIX A: CLI COMMAND DESCRIPTION set snmp community address [IP_address] access [RO | RW] Modifies parameters for an SNMP authorized user. The community name and IP address of SNMP requests from managers on the network must match the list, which you can see using list snmp communities. Parameters address access set snmp trap_community Description Group designation authorizing SNMP requests. IP address of the SNMP manager, in the form nnn.nnn.nnn.
CLI Commands set time
A-16 APPENDIX A: CLI COMMAND DESCRIPTION show adsl statistics show adsl transceiver_status show adsl version show atm status show bridge settings Displays block count statistics for the ADSL interface. It reports the number of blocks transmitted and received. It also reports the number of blocks received with corrected errors, and the number received with uncorrectable errors. Displays the current status of the ADSL transceiver.
CLI Commands show command show crash_vector show date ■ Displays the settings for Command History Depth, and the Current Prompt. You can modify the history depth using set command history, and alter the prompt using set command prompt. Prompts can hold a maximum of 64 characters. For example: History Depth: 10 Current Prompt: 3COM-DSL> Local Prompt: 3COM-DSL> Displays debug information saved after a system crash. Displays the system date, time, and uptime.
A-18 APPENDIX A: CLI COMMAND DESCRIPTION OUTPUT COUNTERS show ethernet settings show ip settings show memory show port settings show security_option settings show snmp counters ■ Octets - bytes transmitted ■ Ucast - unicast packets transmitted ■ MultiCast - multicast packets transmitted ■ Discards - Number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted.
CLI Commands A-19 ■ Bad Versions - SNMP messages for an unsupported SNMP version ■ Bad Community Names - SNMP messages which used an unknown SNMP community name ■ Bad Community Uses - SNMP messages which represented an SNMP operation not allowed by the SNMP community named in the message ■ ASN.1 Parse Errors - sum of ASN.
A-20 APPENDIX A: CLI COMMAND DESCRIPTION show snmp settings Displays SNMP settings, which you can modify using enable or disable snmp authentication traps commands. ■ show system show user settings TELNET Authentication Traps - ENABLED (default) or DISABLED Displays system information. ■ System Descriptor - for example: 3Com HomeConnect™ Remote 810 V1.0.0, Built on Oct 31 1996 at 11:33:05.
TELNET Commands update software tftp A-21 server path VERIFY verify filter TELNET Commands Verifies the syntax of a filter file, which has been previously added to the table. If you update a filter file and TFTP it to the FLASH file system, and the file already exists in the filter table, then you use this command to verify the files syntax. You can use list filters to see which files are currently in the filter file table, and what the status of each is.
A-22 APPENDIX A: CLI COMMAND DESCRIPTION Logout Command Features Command Retrieval Leave the CLI and close this connection. This ends the TELNET session. The command language has several built in features that make it easier to use. When abbreviating commands, it is sometimes hard to remember the commands and their syntax. Using command completion and positional help aids in jogging your memory of the commands and their parameters while you are typing in a command string.
A Add command 2-2 ADSL reset A-11 show settings A-16 show transceiver_status A-15 show version A-16 ATM show status A-16 ATM Information, configuring 3-2 B Bridge Networks Configuration enable bridge spanning_tree A-6 set bridge A-12 Statistics list bridge forwarding A-7 bridge Networks Configuration disable bridge spanning_tree A-5 show bridge settings A-16 Managing disable bridge network A-5 Bridging Advanced 3-3 Overview 3-1 C CLI Conventions and Terminology 2-1 CLI help 2-2 CLI, abbreviation 2-2 CLI,
F Filtering Capabilities 4-1 Filters add filter A-1 delete filter A-4 list filters A-8 FLASH ROM 2-2 I Interface 1-1 Interfaces disable link_traps interface A-5 list interfaces A-8 Internet, viewing Web resources 1-1 IP Configuration add ip network A-2 delete ip network A-4 disable ip network A-5 enable ip network A-6 list ip networks A-9 Diagnostics list ip ARP A-9 Routing add ip defaultroute gateway A-1, A-2, A-4, A-5, A-6, A-7, A-8 add ip route A-2 delete ip route A-4 list ip routes A-9 Overview 3-5 Sta
N Network user 2-2 P Package, what’ s included 1-1 Password 2-2 Password Protection 3-9 Passwords add user A-3 PC 1-1 R Remote Site Management 3-1 S Scripts CLI do (run CLI script) A-6 Security CLI Access disable security_option remote_user administration A-5 enable security_option remote_user administration A-6 Dial-in disable user A-5 enable user A-6 Virtual Channel disable VC A-5 enable VC A-6 Set command 2-1, 2-2 SNMP add snmp community A-3 add snmp trap_community A-3, A-14 delete snmp community A-4
help A-7 history A-7 list facilities A-8 list files A-8 reboot A-10 rename file A-11 System ID 3-8 T TELNET access 3-8 TFTP access 3-9 Time 3-7 U Users delete user A-5 show user settings A-20 show vc settings A-18 V VC set vc A-13 Virtual Channel (VC) 2-3 W Web Browser access 3-8
TECHNICAL SUPPORT AND LIMITED WARRANTY Notice: This modem was not designed or approved for use in Europe, Australia, or New Zealand. Technical Support Technical Support Hotline 3Com provides easy access to technical support information through a variety of services. This section describes those services. Technical questions about the 3Com HomeConnect ADSL Modem products can be answered by technical support representatives. This hotline is a toll call.
send the modem back in the original box. Send ONLY the modem (NOT manuals, diskettes, etc.) Include your SRO number, name and address on the shipping label as well as inside the package. If possible, send the package via a courier capable of tracking the progress of the shipment. Ship to the following address: 3Com ATTN: PCD RMA [your SRO #] 1800 W.
This equipment complies with FCC Rules Part 68. Located on the bottom of the modem is the FCC Registration Number and Ringer Equivalence Number (REN). You must provide this information to the telephone company if requested. The REN is used to determine the number of devices you may legally connect to your telephone line. In most areas, the sum of the REN of all devices connected to one line must not exceed five (5.0).
the telephone number of the sending machine or of such business, other entity, or individual. (The telephone number provided may not be a 900 number or any other number for which charges exceed local or long-distance transmission charges.) In order to program this information into your modem, refer to the RapidComm manual on the CD-ROM that shipped with your modem. If you are using a different communication software program, refer to its manual.
Stock No. 004-000-0345-4 U.S. Government Printing Office Washington, DC 20402 In accordance with Part 15 of the FCC rules, the user is cautioned that any changes or modifications to the equipment described in this manual that are not expressly approved by 3Com could void the user’s authority to operate the equipment.
telecommunication companies do not allow users to connect their equipment to jacks except in precise situations that are spelled out in tariffing arrangements with those companies. Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.
ensemble. Cette précaution est particulièrement importante dans les régions rurales. Avertissement: L'utilisateur ne doit pas tenter de faire ces raccordements lui même; il doit avoir recours à un service d'inspection des installations électriques, ou à un électricien, selon le cas.
the later of April 1, 2000, or ninety (90) days after purchase of the product from 3Com or its authorized reseller, 3Com shall, at its option and expense, provide a software update which would effect the proper performance of such product, repair such product, deliver to Customer an equivalent product to replace such product, or if none of the foregoing is feasible, refund to Customer the purchase price paid for such product.
Warranties exclusive IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION.
exclusions may be limited in their application to you. When the implied warranties are not allowed to be excluded in their entirety, they will be limited to the duration of the applicable written warranty. This warranty gives you specific legal rights which may vary depending on local law. Governing Law This Limited Warranty shall be governed by the laws of the State of California, U.S.A.
