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65xx-A1 Family Router Users Guide

 9 

Advanced .....................................................................................................................................................116

 

Station Info ...................................................................................................................................................119

 

Diagnostics .......................................................................................................................................................119

 

Fault Management .......................................................................................................................................121

 

Management ....................................................................................................................................................121

 

Settings ........................................................................................................................................................122

 

Backup Settings.......................................................................................................................................122

 

Update Settings .......................................................................................................................................123

 

Restore Default........................................................................................................................................123

 

System Log ......................................................................................................................................................124

 

Configure System Log .................................................................................................................................125

 

SNMP Agent .....................................................................................................................................................126

 

TR-069 Client ...................................................................................................................................................127

 

Internet Time ....................................................................................................................................................128

 

Access Control .................................................................................................................................................129

 

Passwords....................................................................................................................................................130

 

Services .......................................................................................................................................................130

 

IP Addresses ....................................................................................................................................................131

 

Update Software...............................................................................................................................................132

 

Reboot ..............................................................................................................................................................133

 

Tools .................................................................................................................................................................133

 

Chapter 6

 

Troubleshooting 136

 

The Router Is Not Functional ...........................................................................................................................136

 

You Cannot Connect to the Router ..................................................................................................................136

 

The DSL LED Continues to Blink .....................................................................................................................136

 

The DSL LED is Always Off..............................................................................................................................137

 

The Internet LED is Always Off ........................................................................................................................137

 

Diagnosing Problems using IP Utilities ............................................................................................................137

 

Ping ..............................................................................................................................................................137

 

Tracert ..........................................................................................................................................................138

 

Nslookup ......................................................................................................................................................138

 

Appendix A – Glossary 

139

 

 

Содержание 6511-A1

Страница 1: ...6519 X1 4 Port 6518 A1 4 Port 6512 A1 2 Port 6511 A1 1 Port ADSL2 Router Users Guide Document Part Number 830 03750 01 June 2011...

Страница 2: ...ZMS zNID and the Zhone logo are trademarks of Zhone Technologies Inc Zhone Technologies makes no representation or warranties with respect to the contents hereof and specifically disclaim any implied...

Страница 3: ...and inspection authorities to ensure compliance 7 A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings If products installed in separate buildings are i...

Страница 4: ...mined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the sep...

Страница 5: ...ject to state tariffs Contact the state public utility commission public service commission or corporation commission for information If the site has specially wired alarm equipment connected to the t...

Страница 6: ...num rique de la classe B respecte toutes les exigences du r glement sur le mat rial brouilleur du Canada NOTICE This device complies with RSS 210 IC ID 8609A 1518A1NA Operation is subject to the follo...

Страница 7: ...nt Panel 14 6512 A1 Front Panel 14 6511 A1 Front Panel 15 LED descriptions 15 Back Panel 16 Chapter 2 Hardware Installation and PC Setup 17 Overview 17 Connecting Your Hardware 17 Mounting the Router...

Страница 8: ...oing 55 IP Filtering Incoming 56 MAC Filtering 59 Parental Control 61 Time Restriction 61 URL Filter 63 Quality of Service 64 Queue Config 64 QoS Classification 66 Routing 68 Default Gateway 68 Static...

Страница 9: ...26 TR 069 Client 127 Internet Time 128 Access Control 129 Passwords 130 Services 130 IP Addresses 131 Update Software 132 Reboot 133 Tools 133 Chapter 6 Troubleshooting 136 The Router Is Not Functiona...

Страница 10: ...to information that is instructional warns of potential damage to system equipment or data and warns of potential injury or death Carefully read and follow the instructions included in this document C...

Страница 11: ...able text typed by users Italic Used for book titles chapter titles file path names notes in body text requiring special attention section titles emphasized terms and variables PLAIN UPPER CASE Used f...

Страница 12: ...Management Protocol TFTP Trivial File Transfer Protocol VoIP Voice over IP VPN Virtual Private Network WEP Wired Equivalent Privacy Wi Fi Wireless Fidelity IEEE 802 11 wireless networking WMM Wi Fi Mu...

Страница 13: ...ible through a standard web browser System Requirements In order to use your 65xx A1 family ADSL router for Internet access you must have the following ADSL service subscription from your ISP A PC wit...

Страница 14: ...this equipment only from an electrical outlet with the correct power source as indicated on the adapter Do not open the cover of the device Opening the cover will void any warranties on the equipment...

Страница 15: ...l be red Internet Blinking The router is connected to the LAN Solid on green Ethernet interface is successfully connected to a device through the LAN port Flashing The router is sending or receiving d...

Страница 16: ...ects the unit to an Ethernet device such as a PC or a switch Reset Default Restart press the button for less than 4 seconds ISP settings press the button for 4 seconds or longer Factor y Default setti...

Страница 17: ...that you have already subscribed to DSL service with your telephone company or other Internet service provider ISP Connecting Your Hardware Shut down your PC before connecting the router To connect yo...

Страница 18: ...switches and any computers connected to them Mounting the Router The router can be mounted on the wall with two screws Mounting can be done on wall material including concrete wood or drywall Select...

Страница 19: ...511 A1 1 30 H x 7 25 W x 5 D 34 93 mm H x 184 15mm W x 127mm D 2 holes 5 375 136 63mm apart 6512 A1 1 25 H x 8 25 W x 4 75 D 31 75 mm H x 209 55 mm W x 102 65 mm D 2 holes 6 125 155 58mm apart 6518 A1...

Страница 20: ...us window open click Properties 3 Listed in the window are the installed network components If the list includes Internet Protocol TCP IP then the protocol has already been enabled and you can skip to...

Страница 21: ...twice to save your changes and then close the Control Panel Windows 7 1 In the Windows taskbar click the Start button and point to Control Panel and then click Network and Internet 2 In the Network a...

Страница 22: ...ust first be removed To remove services from the top navigation bar select Quick Setup If you connected a PC rather than a hub or a switch directly to the router your LAN consists of that PC You may a...

Страница 23: ...User The user user name and password combination can display device status but cannot change or save configurations The admin admin combination can perform all functions Passwords can be changed at a...

Страница 24: ...uide 24 WAN Display the WAN status report from the router by clicking WAN under Device Info The graphic below shows the screen when a WAN connection is set up LAN Statistics Display LAN statistics by...

Страница 25: ...65xx A1 Family Router Users Guide 25 WAN Statistics Display WAN statistics by clicking WAN Service under Statistics xTM Statistics Display ATM statistics by clicking xTM under Statistics...

Страница 26: ...oting and diagnostics of connection problems ADSL BER Test The ADSL Bit Error Rate BER test determines the quality of the ADSL connection The test is performed by transferring idle cells containing a...

Страница 27: ...n will appear allowing you to set the tested time and to begin the test To run a BER test 1 On the bottom of the xDSL statistics page click xDSL BER Test 2 In the Tested Time sec drop down select the...

Страница 28: ...ysical address labelled HW Address the MAC address and identifies computers on the LAN DHCP Display the DHCP lease information by clicking DHCP under Device Info DHCP Dynamic Host Control Protocol all...

Страница 29: ...65xx A1 Family Router Users Guide 29...

Страница 30: ......

Страница 31: ...h DHCP Server available To use the Automatic Configuration feature you check the Automatic Configuration option Note In order for the automatic configuration to work all previously defined WAN configu...

Страница 32: ...D 6518 6519 only 4 Click Apply Save You will see a progress screen When the connection is complete you will see the Service Setup summary screen Quick Setup with Automatic Configuration Disabled 1 Fro...

Страница 33: ...ce Configuration select the protocol for the WAN connection from the Protocol dropdown as directed by your ISP Depending on the protocol selected further parameters are presented For example if you se...

Страница 34: ...SL Router can be configured with a static IP address and Subnet Mask for the LAN interface to correspond to your LAN s IP Subnet To use a static IP address check the Use Static IP Address option then...

Страница 35: ...65xx A1 Family Router Users Guide 35...

Страница 36: ...65xx A1 Family Router Users Guide 36 IPoA For IPoA your ISP will supply information for IP Address Subnet Mask and DNS server...

Страница 37: ...65xx A1 Family Router Users Guide 37 DHCP With the DHCP option you do not set any other options Bridge With the Bridge option you do not set any other options...

Страница 38: ...Guide 38 5 With Quick Setup the router s wireless option is automatically set up and you will need to enter the SSID 6518 6519 only 6 Click Apply Save to save your settings 7 Upon completion the summ...

Страница 39: ...M Layer 3 Internet Protocol addressing in AAL5 packets To configure a connection you first configure the connection type EoA PPPoA or IPoA 1 Add a Layer 2 interface and select the connection type EoA...

Страница 40: ...nly used for uncompressed audio and video information such as videoconferencing interactive audio telephony audio video distribution e g television distance learning and pay per view and audio video r...

Страница 41: ...ou wish to customize the description shown for the service then click Next 6 In the WAN Setup Summary page review the settings for this interface Click Apply Save to accept the settings If you made a...

Страница 42: ...send data to network when infected by virus Connection will not be disconnected under these data streams Inactivity Timeout When Dial on demand is selected this input box indicates that after how long...

Страница 43: ...bottom the lowest Change the priority order by removing all items from the Selected Default Gateway Interfaces window by selecting them then clicking the right arrow button Select the items in the pri...

Страница 44: ...or IGMP snooping so the router can keep limit multicast traffic 8 On the Routing Default Gateway page set the priority of WAN interfaces used as default gateways then click Next If multiple WAN interf...

Страница 45: ...Enable NAT must be checked for Fullcone NAT to be used Dial on demand When this mode is selected the connection that has no traffic within assigned disconnect timeout e g 1 minute will be automaticall...

Страница 46: ...r position in the Selected DNS Server Interfaces window Top is the highest priority bottom the lowest Change the priority order by removing all items from the Selected DNS Server Interfaces window by...

Страница 47: ...rfaces window Top is the highest priority bottom the lowest Change the priority order by removing all items from the Selected Default Gateway Interfaces window by selecting them then clicking the righ...

Страница 48: ...your ISP If all settings are correct click the Apply Save button to save these settings if not click Back to make any modifications do not click the browser Back button If you want to change any item...

Страница 49: ...e speed of your Ethernet connection Modes include auto 100 full 100 half 10 full and 10 half If you select auto then the router will use the common mode that all the connected interfaces can operate a...

Страница 50: ...ange of IP addresses that the DHCP server can assign to your computers Disable the DHCP server if you would like to manually assign IP addresses Static IP Lease list you can configure the DHCP server...

Страница 51: ...sk Click the Apply Save button to save the LAN configuration data NAT You can configure Virtual Servers Port Triggering and DMZ Host when NAT Network Address Translation is enabled Virtual Servers A v...

Страница 52: ...text box You can select a Service or make a new one 3 Enter the IP address of the LAN side PC in the Server IP Address text box 4 Click Save Apply to submit the configuration The NAT Virtual Servers S...

Страница 53: ...65xx A1 Family Router Users Guide 53 Port Triggering Click Add to add Port Triggering to your Internet application...

Страница 54: ...settings for After you make your selection click Save Apply to save your settings The NAT Port Triggering Setup screen appears after you save your selections You will be able to add or remove selecti...

Страница 55: ...essfully pass through firewalls and NAT select the protocol enabled checkbox Security For security reasons firewall options can be configured only from the LAN side of the router IP Filtering Outgoing...

Страница 56: ...P filter the Outgoing IP Filtering Setup screen appears The Outgoing IP Filtering Setup screen lists the outgoing IP filters including filters which were added from the previous screen You can view ad...

Страница 57: ...ce address from the WAN side and information about the destination address to the LAN side Select the protocol and WAN interface to apply the filter to then click Save Apply to add the setting You can...

Страница 58: ...Filtering Setup screen appears The Incoming IP Filtering Setup screen lists the incoming IP filters including filters which were added from the previous screen You can view add or delete incoming fil...

Страница 59: ...o the MAC filtering table then click Add to access the Add MAC Filter screen then configure the MAC filter Protocol type Type of protocol to filter PPPoE IPv4 IPv6 AppleTalk IPX NetBEUI IGMP Destinati...

Страница 60: ...aces Click Save Apply to save the MAC filter When you Save Apply the IP filter the MAC Filtering Setup screen appears The MAC Filtering Setup screen lists the MAC filters including filters which were...

Страница 61: ...Guide 61 Parental Control Use the Parental Control feature to restrict the days and times a particular device is allowed to access the Internet Time Restriction To setup parental controls 1 Click Add...

Страница 62: ...2 Enter a User Name to identify the target of the restrictions This is equivalent to the host name of the IP clients refer to the DHCP status screen check to see the host names 3 Enter the MAC addres...

Страница 63: ...es can be blocked by creating a URL filter Two types of lists can be created either an exclude or include list 1 Select the Exclude button or Include button to specify the web sites you want to block...

Страница 64: ...ment Configuration page you can enable a queue for a network interface Each interface associated with QoS is allocated three queues Lower Queue Precedence values denote a higher priority for the queue...

Страница 65: ...QoS 3 From the Queue Config page click Add 4 In the QoS Queue Configuration page enter the name of the queue and enable the queue by selecting Enable from the Queue Configuration Status drop down 5 Se...

Страница 66: ...ide 66 7 Click Save Apply QoS Classification You can configure the Quality of Service to apply different priorities to traffic on the router The Add Network Traffic Class Rule screen allows you to add...

Страница 67: ...s for the traffic rule will change Ether Type Type of Ethernet packet used on the interface Depending on the Ether Type selected options for the traffic rule will change Source Destination MAC Address...

Страница 68: ...ble in Static Route create routing policy rules and activate Routing Information Protocol RIP on the device Default Gateway You can enable an automatic assigned default gateway on the Routing Default...

Страница 69: ...change the automatic assigned default gateway address you must reboot the router to be assigned a new default gateway IP address Static Route To add a routing table use the Static Route page A maximum...

Страница 70: ...llows the administrator to have more control over how packets should flow through the modem and into their networks The feature allows administrator to route IP packets according to their Source Inter...

Страница 71: ...Enter a unique name for the rule in the Policy Name text box 3 Select the interface to associate with the rule from the Use Interface drop down 4 Select the appropriate protocol and define other param...

Страница 72: ...le WAN interfaces are configured you can define the priority by their position in the Selected DNS Server Interfaces window Top is the highest priority bottom the lowest Change the priority order by r...

Страница 73: ...uter Users Guide 73 Dynamic DNS This screen allows you to enable dynamic DNS service To configure the DDNS click Add then select the DDNS provider from the drop down list and enter the information pro...

Страница 74: ...that should be specified by your ISP Consult with your ISP to select the correct settings for each Click on Save Apply if you are finished or click on Advanced Settings if you want to configure more a...

Страница 75: ...screen click Advanced Settings button on the DSL Settings screen The test mode can be selected from the DSL Advanced Settings page There are five test modes between the router and your ISP Normal tes...

Страница 76: ...into 256 separate tones each spaced 4 3125 kHz apart With each tone carrying separate data the technique operates as if 256 separate modems were running in parallel The tone range is from 0 to 31 for...

Страница 77: ...es such as game consoles or printers that are on the same subnet Game consoles such as xBox or PS3 which requires network connections can use UPnP to be connected to the Internet DNS Proxy By default...

Страница 78: ...g in a USB drive into the USB port on the router Adding a printer server This section explains how to add a printer server the router for Windows 7 and Windows XP For other operating systems refer the...

Страница 79: ...65xx A1 Family Router Users Guide 79 Windows 7 1 In the Advanced Setup Print Setup screen add the printer In this example the printer name is CanonMP250...

Страница 80: ...e following example uses a router IP Address as 192 168 1 254 as shown in the LAN Setup page Normally the router default IP address is 192 168 1 1 2 From the Control Panel Hardware and Sound Devices a...

Страница 81: ...etwork Wireless or Bluetooth printer the click Next 4 The system will search for available printers Click The printer that I want isn t listed 5 Select Add a printer using a TCP IP address or hostname...

Страница 82: ..._Address is the Modem LAN IP Address the default IP Address is 192 168 1 1 Port_ID fixed at 631 Printer_Name must be the same name entered in the modem Printer Server Setting as described in Step 1 7...

Страница 83: ...k Next 9 Specify whether you want to share the printer and enter a printer name if desired 10 Click Finish 11 Check the status of printer from Windows Control Panel Hardware and Sound Devices and Prin...

Страница 84: ...65xx A1 Family Router Users Guide 84...

Страница 85: ...e uses a router IP Address as 192 168 1 254 as shown in the LAN Setup page Normally the router default IP address is 192 168 1 1 2 Click Add a Printer from the Printers and Faxes Control Panel compute...

Страница 86: ...http 192 168 1 254 631 printers CanonMP250 and click Next The syntax is http modem_IP_Address Port ID printers Printer_Name Where modem_IP_Address is the Modem LAN IP Address the default IP Address is...

Страница 87: ...65xx A1 Family Router Users Guide 87 5 Chose the Manufacturer of the printer and Printer Model Name then click Next 6 Choose Yes or No for default printer setting and click Next...

Страница 88: ...65xx A1 Family Router Users Guide 88 7 Click Finish 8 Check the status of printer from Windows Control Panel printer window Status should be Ready...

Страница 89: ...ows you to open ports to allow certain Internet applications on the WAN side to pass through the firewall and enter your LAN To use this feature mapping groups should be created To create a new mappin...

Страница 90: ...65xx A1 Family Router Users Guide 90 After clicking the Add button the Port Mapping Configuration screen appears 2 Enter a unique Group name...

Страница 91: ...k Save Apply LAN Ports Enable disable virtual LANs Virtual LANs are used to enhance security and manage traffic going to different networks IPSec Internet Protocol Security IPSec allows you to set up...

Страница 92: ...65xx A1 Family Router Users Guide 92 Click Add New Connection to access the IPSec Settings screen to enter your configurations...

Страница 93: ...65xx A1 Family Router Users Guide 93...

Страница 94: ...65xx A1 Family Router Users Guide 94 The Show Advanced Settings button at the bottom of the screen provides additional encryption settings...

Страница 95: ...ate either by creating a new one or importing an existing one from a location where one is stored Note Certificates are used with TR 069 Firmware that does not support TR 069 will not support certific...

Страница 96: ...ly to submit the request If you have a certificate already you can simply import the certificate by pasting the certificate content and private key into the space provided 4 If you have an existing ce...

Страница 97: ...65xx A1 Family Router Users Guide 97...

Страница 98: ...ows you to verify the certificates of your peers The Trusted CA Certificate Authority Certificates screen also allows you to view certificates You can store up to 4 certificates To Import a certificat...

Страница 99: ...65xx A1 Family Router Users Guide 99 3 In the Certificate text window paste the content of the certificate 4 Click Apply...

Страница 100: ...less section include Basic Security MAC filter Wireless bridge Advanced Quality of service and station info NOTE The 6512 and 6511 do not provide wireless LAN Basic The Wireless Basic screen allows yo...

Страница 101: ...65xx A1 Family Router Users Guide 101...

Страница 102: ...etup 5618 6519 only Enable WPS WPS securely allows client access to the router When you enable WPS clients must start the access process within two minutes The router supports the PIN WPS method only...

Страница 103: ...65xx A1 Family Router Users Guide 103 Manual Setup AP Network authentication methods include the following...

Страница 104: ...65xx A1 Family Router Users Guide 104 Open anyone can access the network The default is a disabled WEP encryption setting...

Страница 105: ...ption is enabled and encryption key strength of 64 bit or 128 bit needs to be selected Click on Set Encryption Keys to manually set the network encryption keys Up to 4 different keys can be set and yo...

Страница 106: ...tication between a client station and the router by including a RADIUS based authentication server Information about the RADIUS server such as its IP address port and key must be entered WEP encryptio...

Страница 107: ...Access usually used for the larger Enterprise environment it uses a RADIUS server and TKIP Temporal Key Integrity Protocol encryption instead of WEP encryption which is disabled TKIP uses128 bit dyna...

Страница 108: ...y WPA for home and SOHO environments also using the same strong TKIP encryption per packet key construction and key management that WPA provides in the enterprise environment The main difference is th...

Страница 109: ...9 WPA2 Wi Fi Protected Access 2 second generation WPA which uses AES Advanced Encryption Standard instead of TKIP as its encryption method Network re authorization interval is the time in which anothe...

Страница 110: ...amily Router Users Guide 110 WPA2 PSK Wi Fi Protected Access 2 Pre Shared Key suitable for home and SOHO environments it also uses AES encryption and requires you to enter a password and a re key inte...

Страница 111: ...mes for upgrades in the enterprise environment this mixed authentication method allows upgraded and users not yet upgraded to access the network via the router RADIUS server information must be entere...

Страница 112: ...ccess the Access Point The MAC filter screen allows you to control what WiFi clients are allowed or deny to access the WiFi Access Point using the MAC address of the devices 1 Selected the SSID you wa...

Страница 113: ...he Wireless MAC Filter page select the SSID to apply the filter to 2 From one of the MAC Restrict Mode radio buttons select Disabled Allow or Deny 3 Click Add 4 In the Wireless MAC Filter screen enter...

Страница 114: ...strict a wireless bridge 1 In the Wireless Wireless Bridge screen select the access point mode from the AP Mode dropdown AP Mode options are Access Point Wireless Bridge 2 From the Bridge Restrict dro...

Страница 115: ...65xx A1 Family Router Users Guide 115...

Страница 116: ...Family Router Users Guide 116 Advanced The Advanced page configures advanced features of the wireless LAN interface Note Do not change the settings on this screen if you are not familiar with WiFi se...

Страница 117: ...erence with another 2 4Ghz device such as a baby monitor security alarm or cordless phone then change the channel on your router Auto Channel Timer a timer that rescans and finds the best available ch...

Страница 118: ...com Wi Fi technology 54g Protection the 802 11g standards provide a protection method so 802 11g and 802 11b devices can co exist in the same network without speaking at the same time Do not disable 5...

Страница 119: ...cs screen allows you to run diagnostic tests to check your DSL connection The outcome will show test results of three connections Connection to your local network Connection to your DSL service provid...

Страница 120: ...65xx A1 Family Router Users Guide 120...

Страница 121: ...Address Destination MAC address where the fault detection packets will be sent 802 1Q VLAN ID Enter the 802 1Q VLAN Click Set MD Level to apply the MD level Then click Send Loopback to send the loopba...

Страница 122: ...Backup Settings To save a copy of the configurations that you have made on your router 1 From the Settings Backup page click Backup Settings The below pop up screen will appear with a prompt to open...

Страница 123: ...ter will restore settings and reboot to activate the restored settings Restore Default Restore Default will delete all configuration changes you have made and restore the router to factory default set...

Страница 124: ...and reboot System Log The System Log dialog allows you to view the System Log and configure the System Log options To view the System Log click View System Log to check the log file Note Only configur...

Страница 125: ...the severity of the event and a message which describes the event Configure System Log If the log is enabled the system will log selected events based on their level The log levels are Emergency Aler...

Страница 126: ...n the local memory Select the desired values and click Save Apply button to configure the system log SNMP Agent SNMP Simple Network Management Protocol provides a means to monitor status and performan...

Страница 127: ...69 Client The router includes a TR 069 client WAN management protocol with default values configured Note Do not change this information unless you are instructed to by your ISP technician To enable t...

Страница 128: ...e Internet Time Your router can synchronize its internal clock servers with servers running Network Time Protocol NTP 1 To enable NTP click Automatically synchronize with Internet time servers and ent...

Страница 129: ...ccess Control You can enable or disable some services of your router by LAN or WAN If no WAN connection is defined only the LAN side can be configured Note Do not change this information unless you ar...

Страница 130: ...word and then click on the Save Apply button Services Services that can be enabled or disabled on the LAN WAN are FTP HTTP ICMP SNMP SSH Telnet TFTP Note ICMP for the LAN is always enabled It cannot b...

Страница 131: ...be limited when Access Control Mode is enabled Note Do not change this information unless you are instructed to by your ISP technician Adding or changing the settings on this page may cause you to lo...

Страница 132: ...reen select the IP address then select Enabled to enable Access Control Mode Update Software Note Do not perform this operation unless you are instructed to by your ISP technician If your ISP releases...

Страница 133: ...Guide 133 Reboot Clicking Save Reboot saves all the configurations you have made then reboots the router using the new configuration information Tools The Ping and Trace Route tools may be used to ver...

Страница 134: ...65xx A1 Family Router Users Guide 134...

Страница 135: ...65xx A1 Family Router Users Guide 135...

Страница 136: ...reen and that the network cables are installed correctly If the LED is off make sure the router is turned on If the LED is red please contact your ISP 2 Check the Ethernet network cable is plugged in...

Страница 137: ...uter receives the message it sends messages in reply To use it you must know the IP address of the computer with which you are trying to communicate On Windows based computers you can execute a ping c...

Страница 138: ...f that name is not an entry in your ISP s DNS table the request is then referred to another higher level server and so on until the entry is found The server then returns the associated IP address On...

Страница 139: ...order to add information to the signal The voice component in DSL is an analog signal See digital ATM Asynchronous Transfer Mode A standard for high speed transmission of data text voice and video wi...

Страница 140: ...alled DNS servers For example www yahoo com is the domain name associated with IP address 216 115 108 243 When you start to access a web site a DNS server looks up the requested domain name to find it...

Страница 141: ...up of PCs on a LAN and allows communication to pass between the networked devices ICMP Internet Control Message Protocol An Internet protocol used to report errors and other network related informatio...

Страница 142: ...s Also known as encryption keys 64 bit and 128 bit encryption keys used in WEP wireless security schemes The keys encrypt data over the WLAN and only wireless PCs configured with WEP keys that corresp...

Страница 143: ...hines modems etc to a telephone port It is a 6 pin connector usually containing four wires RJ 45 Registered Jack Standard 45 The 8 pin plug used in transmitting data over phone lines Ethernet cabling...

Страница 144: ...only UDP packets only or both Twisted pair The ordinary copper telephone wiring used by telephone companies It contains one or more wire pairs twisted together to reduce inductance and noise Each tel...

Страница 145: ...an only be sent and received by users with access to a private network key Each PC on your wireless network must be manually configured with the same key as your device in order to allow wireless encr...

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