background image

5-4

C

HAPTER

 5: U

PGRADING

 3C

OM

 H

OME

C

ONNECT

 ADSL M

ODEM

 E

THERNET

 O

PERATIONAL

 S

OFTWARE

username <username>

password <password>

If you are obtaining the code update from the 3Com FTP site, you would use the 
command:

update software ftp

<filename>

server

 ftp.3com.com

 

path 

/pub/xdsl/hceth/binary

username 

anonymous 

password 

<password>

where <filename> is the NAC file to load and <password> is your email address 
(i.e., [email protected]).  See the previous section 

3Com FTP Site

 for more 

information about files available from the 3COM FTP site.

To update the software using the TFTP command, use the CLI command: 

update software tftp

<filename>

server <ip_addr>

path <path>

Summary of Contents for HomeConnect 3CP3647

Page 1: ...3Com HomeConnect ADSL Modem Ethernet CLI User s Guide Version 1 0 ...

Page 2: ...l Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in 3Com s standard commercial license for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever is applicable You agree not to remove o...

Page 3: ...ings 2 1 Network Address Formats 2 2 Abbreviation and Command Completion 2 2 Control Characters 2 2 Help 2 2 Conventions 2 2 Command Language Terminology 2 3 3 MANUAL SETUP Configuration Overview 3 1 Managing Bridge Ports 3 1 Configuring ATM Information 3 2 Advanced Bridging 3 3 Advanced Bridging Settings 3 3 Restricting LAN Access 3 4 Canned Filters 3 4 IP Configuration 3 5 IP Wizard 3 5 Configur...

Page 4: ...ile Components 4 2 Protocol Sections Bridge 4 2 Protocol Rules 4 3 Generic Filter Rule 4 4 Step by Step Guide to Creating Filter Files 4 4 Assigning Filters 4 5 Interface Filters 4 6 Input Filter 4 6 Output Filters 4 6 Input Filters vs Output Filters 4 6 Port Filters 4 6 Applying Filters 4 6 Apply a Filter to an Interface 4 6 Configuring a Filter for a Port 4 7 Setting Filter Access 4 7 Managing F...

Page 5: ... filename 5 4 A CLI COMMAND DESCRIPTION CLI Commands A 1 ADD A 1 add bridge access_mac_address mac_address A 1 add dns server domain_name A 1 add filter filter name A 1 add ip defaultroute gateway IP_address A 2 add ip network network_name A 2 add ip route ip_net_address A 2 add snmp community community_name A 3 add snmp trap_community name A 3 add syslog ip_addr loglevel loglevel A 3 add tftp cli...

Page 6: ...mp user_access A 5 disable security_option remote_user administration A 5 disable snmp authentication traps A 5 disable user user_name A 5 DO A 6 do command_inputfile output outputfile A 6 ENABLE A 6 enable bridge access_mac_addresses A 6 enable bridge forwarding A 6 enable bridge spanning_tree A 6 enable ip network network_name A 6 enable link_traps interface interface_name A 6 enable port port n...

Page 7: ... snmp trap_communities A 9 list syslog A 10 list tftp clients A 10 list users A 10 PAUSED COMMANDS A 10 PING A 10 ping ip_name_or_addr A 10 REBOOT A 10 RENAME A 11 rename file input_file output_file A 11 reset ethernet counters A 11 reset port port number A 11 SAVE A 11 save all A 11 SET A 11 set adsl option optn_value A 11 set adsl power hi A 11 set adsl power lo A 11 set adsl psdm psdm_value A 1...

Page 8: ...transceiver_status A 16 show adsl version A 16 show atm status A 16 show bridge settings A 16 show command A 17 show crash_vector A 17 show date A 17 show file filename A 17 show filter filter_name A 17 show ethernet counters A 17 INPUT COUNTERS A 17 OUTPUT COUNTERS A 18 show ethernet settings A 18 show ip settings A 18 show memory A 18 show port port number settings A 18 show security_option sett...

Page 9: ... 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 WARRANTY Technical Support i Technical Support Hotline i Online Technical Support i If you need to Return the Modem to Us i Manufacturer s Declaration of Conformity ii Caution to the User ii Fax Branding iii R...

Page 10: ...3Com Corporation Limited Warranty vii YEAR 2000 WARRANTY vii Obtaining Warranty Service viii Warranties exclusive ix Limitation of Liability ix Disclaimer ix Governing Law x ...

Page 11: ...onfigure your settings to 9600 baud 8 data bits no parity 1 stop bit direct connect IBM PC Compatible Computers Windows Terminal included with Microsoft Windows 3 x and ProComm Plus are popular communications packages which support VT100 terminal emulation for IBM PC compatible computers HyperTerminal bundled with Windows 95 and 98 also provides terminal emulation Macintosh Computers ProComm Micro...

Page 12: ... are automatically created when the unit is initially configured using the IP Wizard The default username is root and the default password is root Refer to the Chapter 3 for how to use the IP Wizard to assign an IP address to the unit Alternatively the IP address and administrative login profile can be created using CLI commands From Windows 95 you can go to the DOS Window and run telnet ip_addres...

Page 13: ... provided with default values You do not need to specify these parameters unless you wish to override the default Values required values for a command or parameter are enclosed by arrows range of values following parameters are enclosed in brackets Inside the brackets if you see a vertical bar you may select only one of the displayed choices FIRST SECOND THIRD comma you can select one or more of t...

Page 14: ...ten commands If an error occurs while a command is processing any partial command up to and including the field in error is added to the history list The current command can be killed by pressing ctrl C C A partially completed command line can be reprinted a useful function if due to interrupted output you re unsure what 3Com HomeConnect ADSL Modem Ethernet has seen up to now by pressing ctrl L L ...

Page 15: ...ish to attach and remotely manage the unit Filter can be applied to interfaces connections and theernet port to control access through the system Interface describes physical devices for example ports Route describes a path through the network to another system or network Table entries are created with an add command and removed with a delete command The add command specifies the most important pa...

Page 16: ...2 4 CHAPTER 2 CLI COMMAND CONVENTIONS AND TERMINOLOGY ...

Page 17: ...sses of data packets passing through the bridge The 3Com HomeConnect ADSL Modem Ethernet bridge supports the Spanning Tree Protocol STP This feature is used when two networks are joined by two bridges forming a looped network STP prevents the data packets from circling the two networks The 3Com HomeConnect ADSL Modem Ethernet is a 9 port bridge with a single ethernet port on the Ethernet physical ...

Page 18: ... port Configuration changes to a bridge port profile do not take effect until the next time the profile is enabled Thus if you want to make changes to the profile you should disable the profile make your changes and then re enable the profile For example if you want to change the VCI value to 35 for bridge port 2 disable port 2 set port 2 vci 35 enable port 2 Configuring ATM Information The 3Com H...

Page 19: ...s will be written to permanent FLASH memory Advanced Bridging Settings Bridging is globally enabled by default to disable bridging use the disable bridge forwarding command The advanced bridging configuration options include Aging Time Forward Delay Spanning Tree and Spanning Tree Priority To see the current settings for these options use the command show bridge Except for enabling Spanning Tree m...

Page 20: ...ccess MAC Address feature use the command enable bridge access_mac_addresses To disable the use of the Access MAC Address feature use the command disable bridge access_mac_addresses Canned Filters The 3Com HomeConnect ADSL Modem Ethernet provides sophisticated generic filtering capabilities Normally filters must be created with a text editor copied to the unit and applied to the appropriate interf...

Page 21: ...must also have an administrative login profile user name and password assigned To access the IP Wizard go to Start Programs 3Com HomeConnect ADSL Modem Ethernet and click on IP Wizard IP Wizard will search the LAN for all unconfigured 3Com HomeConnect Modems As each unconfigured unit is found the unit s MAC address is placed in the selection box For multiple HomeConnect modems you can determine wh...

Page 22: ...rtion of the station address not covered by the mask is 0 Defining a numerical subnet is useful when your value falls in between classes You can also omit the mask altogether it will automatically be calculated from the address To add an IP network use the command add ip network network name address ip address mask frame ETHERNET_II SNAP To list the defined IP networks use the command list ip netw...

Page 23: ...in of the host name you are attempting to resolve If no specific entry is found the wildcard entry is used To list the entries in the DNS Server Table use the command list dns servers To delete an entry from the DNS Server Table use the command delete dns server domain_name where domain name is the specific domain or the wildcard character IP Tools The 3Com HomeConnect ADSL Modem Ethernet CLI prov...

Page 24: ...e for the unit You can view the settings using the command show system To set these parameters use the command set system name name location location contact contact The name location and contact can be up to 32 characters long For example set system name Modem1 location Rack4 contact SysAdmin 555 1212 Configuring TELNET Login Access Setting up a login user allows you to provide controlled access ...

Page 25: ...tect access to the CLI When the password protection feature is enabled a user connecting to the CLI via the serial console port will be prompted for the CLI password After the correct password is entered all CLI commands are accessible by the user The user can exit from the CLI to disable further access or can configure an idle timeout period If no commands are executed by the CLI for a period lon...

Page 26: ...ilities of your terminal emulation program or your TELNET utility The captured file can then be altered as required and then played into the console of other unconfigured units As an alternative to directly executing a script file played into the console port the 3Com HomeConnect ADSL Modem Ethernet is capable of executing a sequence of commands from a script file stored in FLASH memory The file c...

Page 27: ...mation on the filtering capabilities for your 3Com HomeConnect ADSL Modem Ethernet It is divided into the following sections Filtering Overview 3Com HomeConnect ADSL Modem Ethernet Filtering Capabilities Creating Filters Assigning Filters Applying Filters Managing Filters Filtering Capabilities of the 3Com HomeConnect ADSL Modem Ethernet The 3Com HomeConnect ADSL Modem Ethernet supports the follow...

Page 28: ...to packets going out the WAN ATM interface or to packets coming from a specific port The first step in creating a filter on the 3Com HomeConnect ADSL Modem Ethernet is to create a file using filter syntax The file can be created using a text editor on a remote workstation or it can be created using the CLI create text command File names should be short and descriptive such as BLOCKPC1 FLT The crea...

Page 29: ...f there is no match by default the packet is accepted For this reason you should order your protocol rules so that the rules you expect to be most frequently matched are in the beginning of the section This reduces the amount of parsing time that occurs during filtering The following table describes each field used in the rule syntax Table 4 1 Protocol Rules Field Description line Each rule must h...

Page 30: ...mparing with the value hex VALUE The value hex to compare to the packet contents For example a generic bridge filter to prevent all IP packets from being bridged is BR ETH 1 reject generic origin frame offset 12 length 2 mask 0xFFFF value 0x0800 Step by Step Guide to Creating Filter Files This section presents a step by step guide for creating and applying filters These steps assume that the filte...

Page 31: ...s 10 From a machine that has access to the same network as the bridge use a TFTP command to transfer the filter file to the bridge FLASH memory For example from the workstation command line enter tftp 3Com HomeConnect ADSL Modem Ethernet IP address put filter filename 11 The bridge does not recognize a filter file stored in its FLASH memory until you add it to the managed filter table To notify th...

Page 32: ...g to be discarded anyway Most importantly the bridge does not know which interface an outgoing packet came in through If a potential intruder forges a packet with a false source address in order to appear as a trusted host or network there is no way for an output filter to tell if that packet came in through the wrong interface An input filter on the other hand can filter out packets purporting to...

Page 33: ...e port filters will override interface filters If filter access is OFF then the interface filters are used Always turn filter access OFF for the Ethernet interface since there are no profiles associated with it If you do not turn if off the filter will not be applied To set the filter access parameter to ON for a specific interface use the CLI command set interface interface_name filter_access ON ...

Page 34: ...a Port Profile To remove a filter that is assigned to a port profile use the following command set port port number input_filter set port port number output_filter The value represents a null value and removes the defined filter from the user profile For example to remove an input filter from port 2 you would use the CLI command set port 2 input_filter Deleting a Packet Filter To delete a specific...

Page 35: ...rsion of the software on CD If you have erased the operational software from your 3Com HomeConnect ADSL Modem Ethernet you will need to reinstall the software from your CD 3Com Instant Update Process If you have not yet installed Instant Update and configured it you will need to do so The 3Com Instant Update is included on the 3Com HomeConnect ADSL Modem Ethernet CD Open the Scheduling tab on the ...

Page 36: ...software from the CD to your hard drive 1 Insert the 3Com HomeConnect ADSL Modem Ethernet Installation CD in your PC s CD drive for example drive d An installation menu will be displayed 2 Click Install the HomeConnect ADSL Modem Ethernet 3 Follow the prompts on your screen to finish the software installation In addition to installing the 3Com HomeConnect ADSL Modem Ethernet operational software t...

Page 37: ...ommand line to use the REM proper COM port pcsdl p1 r BAUDRATE vNA1 0 4 vSD0 3 3 nSDmd nNAmd pcsdl p1 r BAUDRATE vNA1 0 4 vSD0 3 3 nSDmd nNA Execute the batch file with the following command dl 115 6 When Establishing Communications appears in your DOS window plug the 3Com HomeConnect ADSL Modem Ethernet back into the outlet 7 Various status messages will be displayed indicating the progress of th...

Page 38: ...e ftp filename server ftp 3com com path pub xdsl hceth binary username anonymous password password where filename is the NAC file to load and password is your email address i e name company com See the previous section 3Com FTP Site for more information about files available from the 3COM FTP site To update the software using the TFTP command use the CLI command update software tftp filename serve...

Page 39: ...er cannot resolve the name a request is sent to the Secondary Server add filter filter name Adds a filter file name to the filter table The filter table is a managed list of filter names used by SNMP A filter file is a text file stored in the FLASH file system that you load using TFTP Add filter also verifies the syntax of the filter file If syntax verification fails you ll receive an error messag...

Page 40: ...work_name Name of IP network consisting of up to 32 unique ASCII characters space must be surrounded by double quotes address IP address of the network in the format nnn nnn nnn nnn with or without a mask specifier The Mask Specifier can be A B C or H or a numeric value from 8 to 30 that describes the number of one bits in the mask If you do not specify a mask the system will gener ate it for you ...

Page 41: ... yes Adds a Telnet user to the local user table The list users command displays these parameters for all users Parameters Description community_name Group name that authorizes SNMP requests address IP address of the SNMP manager in the form nnn nnn nnn nnn access Determines what type of access to SNMP MIBs the added user will have Options Read Only RO and Read Write RW Parameters Description name ...

Page 42: ...rs to see what filter files are in FLASH memory delete ip network network_name Deletes an IP network from the interface that you specified when adding the network Use list ip networks to see which networks are associated with which interfaces Always use disable ip network before deleting it delete ip route IP_address Deletes an IP address from the IP routing table that you previously added with ad...

Page 43: ...rk Make sure there is no activity on this network before disabling it disable link_traps interface interface_name Prevents SNMP from sending linkup and linkdown traps for the specified interface You can see if the interface is currently enabled for traps by using the show interface settings command disable port port number Disables the specified bridge port from being used disable security_option ...

Page 44: ...rently enabled for traps using the show interface settings command enable port port number Enables a bridge WAN port The list port command displays a summary of all bridge ports enable security_option remote_user administration Enables CLI access via TELNET You can use disable security_option remote_user administration to restrict CLI access to the console port only and enable security_option remo...

Page 45: ...an modify the history depth using the set command history command idle timout minutes Sets the CLI inactivity timeout period If the CLI is idle for the idle timeout period and if CLI password protection is enabled the CLI password must be re entered before any commands can be executed LIST list bridge access_mac_addresses Lists the contents of the the Access MAC Table When the Access MAC feature i...

Page 46: ...previously defined using the add filter command You can remove filters using delete filter The command lists the filter file name the status of the filter and the protocols the file applies to For example Filter Name Status Protocols easyfilter fil NORMALBR BR ETH list files Displays the files currently stored in the FLASH file system You can remove files using delete file but you can add them usi...

Page 47: ... that you previously defined using the add ip route command It lists Destination IP address that the route resolves to Prot LOCAL NextHop address of the gateway used to reach this route Metric number of router hops away this route is from the system If interface that the route uses list ports Lists all bridge ports showing Name user designation you specified using add vc Network Service type of ne...

Page 48: ...e users to connect list users Lists all users showing User Name user designation you specified using add user Login Service The service used to login to the network i e TELNET Status link status ACTIVE INACTIVE or DISABLED PAUSED COMMANDS PING ping ip_name_or_addr output output_filename count count interval interval timeout timeout_value Sends an ICMP echo request to a remote IP host A reply from ...

Page 49: ...to newer ADI 918 based DSLAMS Use the show adsl config command to display the currently configured value The new PSD value takes effect on the next ADSL line retrain To force a line retrain use the set adsl reset command set adsl power lo Sets the maximum power spectral density PSD value used by the Analog Devices 918 ADSL chipset to the recommended restricted value This is the recommended setting...

Page 50: ...ch facility The levels CRITICAL a serious system error which may effect system integrity Parameters Description aging_time Interval to wait before aging out MAC addresses that were learned from other LAN segments The default is 300 forward_delay Interval bridge waits before bridging packets This time is useful for the bridge to listen to packets look at the MAC addresses and build its known MAC ad...

Page 51: ...ort parameters Parameters Description interface_name Designation of interface you are setting parameters for Limit of 32 characters filter_access ON causes filters specified for an interface with a set interface com mand to override filters specified with a set user command when the filters are of the same type input_filter Name of filter file you wish to be applied to the input stream coming in o...

Page 52: ...eporting level for syslog entries that will be sent to the specified IP address You must have previously defined this syslog IP address using add syslog There are five levels of logging CRITICAL a serious system error which may effect system integrity UNUSUAL an abnormal event which the system should recover from COMMON a regularly occurring event that is not frequent VERBOSE a regular periodic ev...

Page 53: ...wer spectral density setting show adsl performance Displays ADSL error statistics The following statistics and counters are collected in 15 minute interval bins Loss of framing errors Loss of power errors Errored seconds Loss of signal errors The statistics are displayed for the following time periods Current 15 minute interval Previous 15 minute interval Current day Previous day Total Parameters ...

Page 54: ...on about the ADSL interface It lists Hardware Release Version Version of the ADSL chipset present on the unit Firmware Release Version Version of the ADSL firmware present on the unit show atm status Displays current statistics for the ATM protocol running over the ADSL WAN interface It lists Cell Delineation Whether or not cell delineation is currently achieved RX No Pkt Avail Number of times a p...

Page 55: ...net bridge data filter rules BR ETH CALL Ethernet bridge call filter rules show ethernet counters Displays counters for the ethernet interface INPUT COUNTERS Octets bytes received Ucast Unicast packets received MultiCast Multicast packets received BroadCast broadcast packets received Discards Number of inbound packets which were chosen to be discarded even though no errors had been detected to pre...

Page 56: ...P address of the system IP Forwarding always DISABLED WAN to WAN Forwarding indicates if forwarding between WAN Bridge ports is allowed show memory Displays System RAM Memory usage Total System Memory Resources total amount of memory in system Free Memory amount of memory not in use Code Size amount of memory used by code Initialized Data Size Uninitialized Data Size Stack Size static data areas s...

Page 57: ... Request PDUs sum of SNMP Get Request PDUs accepted and processed Get Next Request PDUs sum of SNMP Get Next PDUs accepted and processed Set Request PDUs sum of SNMP Get Next PDUs accepted and processed Get Response PDUs sum of SNMP Get Response PDUs accepted and processed Trap PDUs sum of SNMP Trap PDUs accepted and processed OUTPUT COUNTERS Packets sum of SNMP packets transmitted Too Big Errors ...

Page 58: ... users who dial in and whose type is network type parameter in add user whose host_type is prompt host_type parameter in set login user and whose login_service is TELNET login_service parameter in set login user telnet ip_name_or_addr Establishes a TELNET client session with the specified IP address telnet ip_addr TCP_port number Establishes a TELNET client session with the specified IP address us...

Page 59: ...commands send string Transmits a TELNET control character Be sure the parameters are uppercase The choices are set_escape string Allows changing the TELNET escape character from to something else Control characters are specified using the carat character followed by another character For example to set the TELNET escape character to control X type set_escape X status Displays the IP address of the...

Page 60: ...thout the so you can enter the parameter you wish to use This helps you find the parameter you need and add it to your command without having to retype the entire command string Be sure to leave a space between the keyword and the question mark to use positional help Command Completion The escape key provides command completion If you press the escape key before you finish typing a command or para...

Page 61: ...ge 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 control characters 2 2 CLI names strings 2 1 Command Line Interface CLI 2 2 Configuration 2 2 Configuration Overview 3 1 Console 1 1 D Date 3 7 Diagnostics PING A 10 DN...

Page 62: ...k 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 Statistics show ip settings A 18 TFTP add tftp client A 3 delete tftp client A 5 list tftp clients A 10 IP Routing Framed Routes 3 6 IP Routing Static Routes 3 6 IP Wi...

Page 63: ...annel 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 delete snmp trap_community A 4 disable link_traps interface A 5 disable security_option snmp user_access A 5 disable snmp authentication traps A 5 enable link_traps interface A 6 enable security_option snmp user_access A 6 enable snmp authentication traps A ...

Page 64: ... 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 ...

Page 65: ...nadian customers can speak to a technical support representative by contacting Keating Technologies 905 305 6570 8 00am 8 00pm EST Monday through Friday Online Technical Support 3Com offers product support 24 hours a day 7 days a week through World Wide Web consumer 3com com support 3Com BBS 847 262 6000 Email support consumer 3com com If you need to Return the Modem to Us Contact 3Com Customer Su...

Page 66: ...25 Royal Crest Court Suite 120 Markham ONT L3R 9X4 Manufacturer s Declaration of Conformity 3Com Corporation 3800 Golf Road Rolling Meadows IL 60008 U S A declares that this product conforms to the FCC s specifications Part 15 Operation is subject to the following two conditions 1 this device may not cause harmful electromagnetic interference and 2 this device must accept any interference received...

Page 67: ... to connect to the telephone network or premises wiring using a Part 68 compliant compatible jack See installation instructions for details If you have an external modem UL Listing CSA Certified This information technology equipment is UL Listed and CSA Certified for the uses described in the users guide If you have an internal modem UL Listing CUL Listing This information technology equipment is ...

Page 68: ...gainst such interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause interference to radio and television communications However there is no guarantee that interference will not occur in a particular installation If this device does cause interference to radio or telev...

Page 69: ...nt that the sum of the Ringer Equivalence Numbers of all devices does not exceed 5 The Ringer Equivalence Number is located on the bottom of the modem Notice The Industry Canada IC label identifies certified equipment This certification means the equipment meets certain telecommunications network protective operational and safety requirements as prescribed in the appropriate Terminal Equipment Tec...

Page 70: ...oitation et de sécurité des réseaux de télécommunications comme le prescrivent les documents concernant les exigences techniques relatives au matériel terminal Le Ministère n assure toutefois pas que le matériel fonctionnera à la satisfaction de l utilisateur Avant d installer ce matériel l utilisateur doit s assurer qu il est permis de le raccorder aux installations de l entreprise locale de télé...

Page 71: ...s sole discretion refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned 3Com warrants any replaced or repaired product or part for ninety 90 days from shipment or the remainder of the initial warranty period whichever is longer YEAR 2000 WARRANTY In addition to the Warran...

Page 72: ...tion Dated proof of purchase from 3Com or its authorized reseller may be required Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Service Repair Order SRO number marked on the outside of the package and sent prepaid and packaged appropriately for safe shipment and it is recommended that they be insured or sent by a method that provides for tracking of the...

Page 73: ...THORIZED ATTEMPTS TO OPEN REPAIR OR MODIFY THE PRODUCT OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE OR BY ACCIDENT FIRE LIGHTNING OTHER HAZARDS OR ACTS OF GOD Limitation of Liability TO THE FULL EXTENT ALLOWED BY LAW 3COM ALSO EXCLUDES for itself and its suppliers ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITI...

Page 74: ...uration 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 excluding its conflicts of laws principles and excluding the United Nations Convention on Contracts for the International Sale of Goods ...

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