Page 3 - From our line of ADSL solu; tions
38 TeslaIrvine, CA 92618Phone: (949) 679-8000 ADSL RouterUser Guide From our line of ADSL solu tions May 2002Part No: xxPub No: 150000014500E R01
Page 6 - ii
L IMITED W ARRANTY ii WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES OR CONDITI...
Page 7 - iii; OMPLIANCES
iii C OMPLIANCES FCC - Class B This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment ...
Page 8 - iv; Industry Canada - Class B
C OMPLIANCES iv The telephone company may make changes in its facilities, equipment, operations, or procedures that will provide advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service.If trouble is experienced with this equipment, please contac...
Page 9 - EC Conformance Declaration - Class B
C OMPLIANCES v EC Conformance Declaration - Class B This information technology equipment complies with the requirements of the Council Directive 89/336/EEC on the Approximation of the laws of the Member States relating to Electromagnetic Compatibility and 73/23/EEC for electrical equipment used wit...
Page 10 - Taiwan BSMI Class A
C OMPLIANCES vi Taiwan BSMI Class A Australia AS/NZS 3548 (1995) - Class B
Page 11 - vii; ABLE
vii T ABLE OF C ONTENTS 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Networking Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 12 - viii
T ABLE OF C ONTENTS viii WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Asynchronous Transfer Mode (ATM) . . . . . . . . . . . . . . . . . 3-9Protocol Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Protocol Multiplexing...
Page 13 - ix
T ABLE OF C ONTENTS ix Windows NT 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10 Step 1. Configure TCP/IP Settings . . . . . . . . . . . . . . . . . . . . . . 4-10Step 2. Disable HTTP Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13Step 3...
Page 16 - Features and Benefits; High-speed Internet access over existing phone lines
I NTRODUCTION 1-2 services requiring guaranteed Quality of Service (QoS). The Barricade enables true telecommuting for the first time. It also provides multiprotocol encapsulation for bridging Windows NetBEUI and Novell’s IPX protocols directly to a remote site for complete access to corporate resou...
Page 17 - Web interface for ADSL connection management
F EATURES AND B ENEFITS 1-3 • Supports pass-through for three of the most commonly used Virtual Private Network (VPN) protocols – PPTP, L2TP, and IPSec • Security protocols, including Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) • Always-on digital co...
Page 18 - Networking Concepts; ADSL
I NTRODUCTION 1-4 Networking Concepts ADSL Digital Subscriber Line (DSL) technology transmits both data and voice over ordinary telephone lines. Signals above 4 kHz are cut off in normal telephone communications as noise, so DSL uses this spectrum to transmit data. Since Internet users and people te...
Page 19 - Route Determination; Bridging
N ETWORKING C ONCEPTS 1-5 Data flows are broken up into fixed length cells, each of which contains a Virtual Path Identifier (VPI) that identifies the path between two nodes, and a Virtual Circuit Identifier (VCI) that identifies the data channel within that virtual path. Each virtual circuit mainta...
Page 20 - Routing; The Barricade supports RIP 2 dynamic
I NTRODUCTION 1-6 Routing If ATM Protocol Encapsulation is set for PPP/ATM or IP/ATM, the router will forward incoming IP packets and use RIP 2 for routing path management if enabled. The router supports both static routing and dynamic routing. • Static routing requires routing information to be sto...
Page 21 - Network Applications; Accessing a Remote Site
N ETWORK A PPLICATIONS 1-7 Network Applications The Barricade can be configured as a bridge for making a transparent connection to a remote site, or as a router for accessing the Internet. These applications are briefly described in the following sections. Accessing a Remote Site The Barricade can b...
Page 22 - Accessing the Internet
I NTRODUCTION 1-8 Figure 1-1. Transparent Bridged Network Accessing the Internet To access the Internet, which uses TCP/IP protocols exclusively, the Barricade must be configured to function as a router. One interface is the port attached to a local Ethernet LAN (or directly to a host PC with an Eth...
Page 25 - Package Contents; External power adapter
2-1 C HAPTER 2 I NSTALLATION Before installing the Barricade, verify that you have all the items listed under “Package Contents.” If any of the items are missing or damaged, contact your local distributor. Also be sure that you have all the necessary cabling before beginning the installation. After ...
Page 26 - Hardware Description; LED Indicators; LED
I NSTALLATION 2-2 Hardware Description The Barricade provides a high-speed Asynchronous Digital Subscriber Line (ADSL) that connects to a remote site (via bridging) or to the Internet (via routing). It transports data over standard telephone wire at full-rate ADSL (G.dmt: 8 Mbps downstream, 640 Kbps...
Page 27 - Rear Panel; The rear panel provides the following ports:
H ARDWARE D ESCRIPTION 2-3 Slow blink: 1 second ON, 1 second OFFData blink: Cycle dependent on data being sent/received Rear Panel The rear panel provides the following ports: • One USB port for connection to a PC • One RJ-45 port for connection to a 10BASE-T/100BASE-TX Ethernet Local Area Network (...
Page 28 - System Requirements
I NSTALLATION 2-4 System Requirements You must have access to an ADSL network that meets the following minimum requirements: • ADSL service from your local telephone company or Internet Service Provider (ISP), or access to an ADSL Digital Subscriber Line Access Module (DSLAM) at your local site. • P...
Page 29 - Connect the System; Phone Line Configuration; Installing a Full-rate Connection
C ONNECT THE S YSTEM 2-5 Connect the System Phone Line Configuration Installing a Full-rate Connection If you are using a full-rate (G.dmt) connection, your service provider will attach the outside ADSL line to a data/voice splitter. In this case you can connect your phones and computer directly to ...
Page 30 - Installing a Splitterless Connection
I NSTALLATION 2-6 Installing a Splitterless Connection If you are using a splitterless (G.lite) connection, then your service provider will attach the outside ADSL line directly to your phone system. In this case you can connect your phones and computer directly to the incoming ADSL line, but you wi...
Page 31 - Connect the ADSL Line
C ONNECT THE S YSTEM 2-7 Connect the ADSL Line Run standard telephone cable from the wall jack providing ADSL service to the ADSL port on your Barricade. When inserting an RJ-11 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated. If you are using splitterless...
Page 32 - Make sure each twisted-pair cable does not exceed 100 meters; Connect to the Barricade’s USB Port; Follow the instructions given to install the driver.
I NSTALLATION 2-8 Notes: 1. Use 100-ohm straight-through shielded or unshielded twisted-pair cable with RJ-45 connectors at both ends for all connections. Use Category 3, 4, or 5 for 10 Mbps connections, or Category 5 for 100 Mbps connections. 2. Make sure each twisted-pair cable does not exceed 100...
Page 33 - Web-Based Configuration and Monitoring; Logging into the System
3-1 C HAPTER 3 W EB -B ASED M ANAGEMENT Web-Based Configuration and Monitoring The ADSL Barricade provides an embedded HTTP Web agent. This agent can be accessed by any computer on the network using a Java-supported Web browser (including Internet Explorer 4.0 or above, and Netscape Navigator 4.0 or...
Page 34 - Navigating the Web Browser Interface
W EB -B ASED M ANAGEMENT 3-2 Navigating the Web Browser Interface The Barricade’s management interface provides access to the three main menus – Status, Configuration Setting, and Admin Privilege. The fast Setup Wizard is also accessible from the home page. • The Setup Wizard quickly leads you throu...
Page 35 - Making Configuration Changes; Enter only parameters provided by your ISP to set the WAN link.
N AVIGATING THE W EB B ROWSER I NTERFACE 3-3 Making Configuration Changes Configurable parameters have a dialog box or a drop-down list. Once a configuration change has been made on a page, be sure to click on the appropriate button on the page to confirm the new setting. Note: To ensure proper scre...
Page 36 - Menu Overview; Menu
W EB -B ASED M ANAGEMENT 3-4 Menu Overview The Web management interface allows you to define system parameters, manage and control the Barricade and its ports, and monitor network conditions. The following table briefly describes the selections available from this program. Menu Description Configura...
Page 38 - Configuration Settings; WAN; Parameter
W EB -B ASED M ANAGEMENT 3-6 Configuration Settings Use the Configuration menus to access the basic options for WAN and LAN connections, NAT, Virtual Server, Bridge Filtering, and DNS configuration. WAN Note: This screen is used to configure the ADSL link, including IP address, ATM PVC, encapsulatio...
Page 39 - Only use values provided by your ISP to configure the WAN link.
C ONFIGURATION S ETTINGS 3-7 Note: Only use values provided by your ISP to configure the WAN link.
Page 41 - Asynchronous Transfer Mode
C ONFIGURATION S ETTINGS 3-9 Asynchronous Transfer Mode (ATM) ADSL provides a reliable connection to your service provider. Traffic is carried over the ADSL physical link layer using ATM protocol. This protocol allows you to designate multiple paths between locations (Virtual Path), and multiple dat...
Page 43 - PPPoE LLC. Point to Point Protocol over Ethernet Logical Link; Protocol Multiplexing
C ONFIGURATION S ETTINGS 3-11 • PPPoE VC-Mux. Point to Point Protocol over Ethernet Virtual Circuit Multiplexer uses PPP to bridge multiprotocol traffic over Ethernet to the ISP’s router. Each PPP connection first learns the Ethernet address of its remote peer, and then establishes a unique session ...
Page 44 - LAN
W EB -B ASED M ANAGEMENT 3-12 LAN This screen is used to configure parameters for the Ethernet port, including local IP address, enabling DHCP service, and setting the port to a fixed speed/duplex mode or for auto-negotiation. Parameter Default Description LAN Configuration IP Address 192.168.1.1 IP...
Page 46 - NAT Configuration
W EB -B ASED M ANAGEMENT 3-14 NAT Configuration NAT (Network Address Translation) and NAPT (Network Address and Port Translation) convert IP addresses on a private network (designated as “internal” or “Local Area Network” (LAN) to global IP addresses that can forward packets to another registered ne...
Page 48 - NAT Session Name Configuration; This screen is used to assign a NAT session to a virtual circuit.
W EB -B ASED M ANAGEMENT 3-16 NAT Session Name Configuration This screen is used to assign a NAT session to a virtual circuit. Parameter Default Description Session Name A name used to identify the static mapping for a specified local IP address. Virtual Circuit 0 The permanent virtual circuit to wh...
Page 49 - Virtual Server
C ONFIGURATION S ETTINGS 3-17 Virtual Server This screen is used to redirect remote users requesting services (e.g., Web, FTP) on your local network from the Barricade’s public IP address to internal host servers configured with private IP addresses. Depending on the requested service (TCP/UDP port ...
Page 50 - Bridge Filtering
W EB -B ASED M ANAGEMENT 3-18 Bridge Filtering Traffic from a node that presents a security risk or is functioning improperly can be filtered from the Barricade. This screen is used to filter or forward traffic matching the specified source MAC address, destination MAC address, or Ethernet frame typ...
Page 51 - DNS
C ONFIGURATION S ETTINGS 3-19 DNS This screen is used to specify the default gateway and domain name servers. Reboot After making any changes, reboot the Barricade to make the changes effective. Parameter Description DNS Proxy Selection Selects a DNS server by auto-discovery, user configured, or a c...
Page 52 - Admin Privilege; WAN Status
W EB -B ASED M ANAGEMENT 3-20 Admin Privilege Use the Admin Privilege menus to display detailed information on WAN, PPP, and TCP status, or to configure the static routing table, ADSL connection options, RIP parameters, management passwords, and other advanced features. WAN Status This screen shows ...
Page 53 - PPP Status
A DMIN P RIVILEGE 3-21 PPP Status This screen displays the status of PPP connections configured for any permanent virtual circuit. Use this screen to disconnect or reconnect a PPP link operating on a specified virtual circuit.
Page 54 - TCP Status
W EB -B ASED M ANAGEMENT 3-22 TCP Status This screen displays statistics for all TCP traffic crossing the Barricade, as well as general statistics on the number of individual TCP connections. This information can be used to identify potential problems with the Barricade (such as a faulty port or syn...
Page 55 - Route Table
A DMIN P RIVILEGE 3-23 Route Table This screen is used to manually configure static routes to other IP networks, subnetworks, or hosts. Parameter Description Destination A destination network or specific host to which packets can be routed. Gateway The IP address of the router at the next hop to whi...
Page 57 - ADSL Configuration
A DMIN P RIVILEGE 3-25 ADSL Configuration This screen is used to configure ADSL connection options for encoding, handshaking, and wiring type. Parameter Default Description Trellis Enabled An encoding method that limits the impact of line noise on transmitted signals. Handshake Protocol G.dmt ADSL p...
Page 58 - RIP Configuration
W EB -B ASED M ANAGEMENT 3-26 RIP Configuration This screen is used to configure the dynamic routing protocol used to learn new IP routes. Parameter Default Description RIP Disabled Enables/disables dynamic routing. Supplier True Set this to True if you want the Barricade to broadcast routing inform...
Page 60 - Password Configuration
W EB -B ASED M ANAGEMENT 3-28 Password Configuration Administrators have Read/Write access to all configuration parameters and statistics. You should therefore change the default Administrator password as soon as possible, and store it in a safe place. (If for some reason your password is lost, or y...
Page 63 - Other Miscellaneous Functions; The Barricade also includes several basic system functions –
A DMIN P RIVILEGE 3-31 Other Miscellaneous Functions The Barricade also includes several basic system functions – • Reset to Factory Default – Resets the Barricade settings to the factory defaults. • Diagnostic Test – Tests connection for LAN and ADSL circuits. • Code Image Update – Updates firmware...
Page 64 - Status
W EB -B ASED M ANAGEMENT 3-32 Status The Status screen displays core and customer firmware versions and shows the connection status for the Barricade’s WAN and LAN ports.. Parameter Description Firmware Info.Software Version System firmware version in ROM.
Page 66 - This screen shows the signal status on the ADSL line.
W EB -B ASED M ANAGEMENT 3-34 ADSL This screen shows the signal status on the ADSL line.
Page 68 - This screen shows LAN settings for the Barricade and DHCP clients.
W EB -B ASED M ANAGEMENT 3-36 LAN This screen shows LAN settings for the Barricade and DHCP clients. Parameter Description IP Address The IP address of the local Ethernet port. Valid IP addresses consist of four numbers, 1-254, separated by periods. Subnet Mask A template that identifies the address...
Page 69 - Follow these instructions:
4-1 C HAPTER 4 C ONFIGURING C LIENT TCP/IP Windows 95/98/Me You may find that the instructions in this chapter do not exactly match your version of Windows. This is because these steps and screenshots were created from Windows 98. Windows 95 and Windows Millennium Edition are similar, but not identi...
Page 70 - From “Control Panel”
C ONFIGURING C LIENT TCP/IP 4-2 2. From “Control Panel” double-click the “Network” icon. 3. In the “Network” window, under the “Configuration” tab, double-click the “TCP/IP” item listed for your network card. 4. Select the “IP Address” tab. 5. If “Obtain an IP address automatically” is already selec...
Page 71 - Click the “Gateway” tab and
W INDOWS 95/98/M E 4-3 6. Click the “Gateway” tab and record the numbers listed under “Installed gateways.” 7. Click the “DNS Configuration” tab. Locate the DNS servers listed under “DNS Server Search Order.” Record any listed addresses. 8. After writing down your settings, check to make sure you ha...
Page 72 - Step 2. Disable HTTP Proxy; Internet Explorer; Open Internet Explorer and
C ONFIGURING C LIENT TCP/IP 4-4 Step 2. Disable HTTP Proxy You need to verify that the “HTTP Proxy” feature of your Web browser is disabled. This is so that your browser can view the configuration pages for your Barricade. The following steps are for Internet Explorer and Netscape. Determine which b...
Page 73 - Netscape; Open Netscape and click; Step 3. Obtain IP Settings from Your ADSL Router
W INDOWS 95/98/M E 4-5 Netscape 1. Open Netscape and click the stop button. Click “Edit,” then click “Preferences...” 2. In the “Preferences” window, under “Category” double-click “Advanced,” then click “Proxies.” Select “Direct connection to the Internet.” Click “OK.” 3. Repeat these steps for each...
Page 74 - Type “WINIPCFG” and click
C ONFIGURING C LIENT TCP/IP 4-6 2. Type “WINIPCFG” and click “OK.” It may take a minute or two for the “IP Configuration” window to appear. 3. From the drop-down menu, select your network card. Click “Release” and then “Renew.” Verify that your IP address is now 192.168.1.xxx , your Subnet Mask is 2...
Page 76 - All the information you
C ONFIGURING C LIENT TCP/IP 4-8 5. Double-click “Internet Protocol (TCP/IP).” 6. All the information you need to record is on the “Internet Protocol (TCP/IP) Properties” dialog box. Use the spaces below to record the information. 7. If “Obtain an IP address automatically” and “Obtain DNS server addr...
Page 80 - Click the “DNS” tab to
C ONFIGURING C LIENT TCP/IP 4-12 under the IP address tab, locate your IP address, subnet mask, and default gateway. Record these values in the spaces provided below. 9. Click the “DNS” tab to see the primary and secondary DNS servers. Record these values in the spaces provided below. 10. After writ...
Page 81 - In the “Command Prompt”
W INDOWS NT 4.0 4-13 Step 2. Disable HTTP Proxy You need to verify that the “HTTP Proxy” feature of your Web browser is disabled. This is so that your browser can view the configuration pages for your Barricade. Determine which browser you use and refer to “Internet Explorer” on page 4-4 or “Netscap...
Page 82 - Configuring Your Macintosh Computer
C ONFIGURING C LIENT TCP/IP 4-14 3. Type “IPCONFIG /RENEW” and press the <ENTER> key. Verify that your IP address is now 192.168.1.xxx , your Subnet Mask is 255.255.255.0 and your Default Gateway is 192.168.1.1 . These values confirm that your Barricade is functioning. 4. Type “EXIT” and press...
Page 84 - TCP/IP Configuration Setting
C ONFIGURING C LIENT TCP/IP 4-16 Use the space below to record the information. 5. After writing down your IP settings, select “Using DHCP Server” in the “Configure” field and close the window. 6. Another box will appear asking whether you want to save your TCP/IP settings. Click “Save.” Step 2. Dis...
Page 85 - Uncheck all checkboxes and click “OK.”; Open Netscape and click the stop button.
C ONFIGURING Y OUR M ACINTOSH C OMPUTER 4-17 3. Uncheck all checkboxes and click “OK.” Netscape 1. Open Netscape and click the stop button. Click “Edit” and select “Preferences.” 2. In the “Preferences” dialog box, in the left-hand column labeled Category,” select “Advanced.” Under the “Advanced” ca...
Page 86 - Step 3. Obtain IP Settings from Your Barricade; Pull down the Apple
C ONFIGURING C LIENT TCP/IP 4-18 Step 3. Obtain IP Settings from Your Barricade Now that you have configured your computer to connect to your Barricade, it needs to obtain new network settings. By releasing old DHCP IP settings and renewing them with settings from your Barricade, you can verify that...
Page 87 - Diagnosing LED Indicators; Troubleshooting Chart
A-1 A PPENDIX A T ROUBLESHOOTING Diagnosing LED Indicators The Barricade can be easily monitored through the front panel indicators to identify problems. This section describes common problems you may encounter and possible solutions. Troubleshooting Chart Symptom Action LED Indicators PWR LED is Of...
Page 89 - LED I
D IAGNOSING LED I NDICATORS A-3 Network Connection Problems Cannot Ping the Barricade from the attached LAN, or the router cannot Ping any device on the attached LAN • Verify that IP addresses are properly configured. For most applications, you should use the Barricade’s DHCP function to dynamically...
Page 91 - Ethernet Cable; Specifications; Cable Types and Specifications
B-1 A PPENDIX B C ABLES Ethernet Cable Caution: Do NOT plug a phone jack connector into any RJ-45 port. For Ethernet connections, use only twisted-pair cables with RJ-45 connectors that conform to FCC standards. Specifications Wiring Conventions For Ethernet connections, a twisted-pair cable must ha...
Page 92 - Pin Assignments; Attached Device Port Type; RJ-45 Pin Assignments
C ABLES B-2 RJ-45 Port The Ethernet port on this router uses a crossover pin arrangement (MDI-X). Therefore, you can use the crossover cable provided in the package to connect to the router with your PC. When connecting to other network devices such as an Ethernet switch, use the cable type shown in...
Page 93 - Straight-Through Wiring; Straight-Through Cable Pin Assignments
RJ-45 P ORT B-3 Straight-Through Wiring If the twisted-pair cable is to join two ports and only one of the ports has an internal crossover (MDI-X), the two pairs of wires must be straight-through. Crossover Wiring If the twisted-pair cable is to join two ports and both ports use an internal crossove...
Page 94 - ADSL Cable
C ABLES B-4 ADSL Cable Use standard telephone cable to connect the RJ-11 telephone wall outlet to the RJ-11 ADSL port on the ADSL Router. Caution: Do NOT plug a phone jack connector into any RJ-45 port. For Ethernet connections, use only twisted-pair cables with RJ-45 connectors that conform with FC...
Page 95 - Interface Specifications; Standards Conformance; Transport Protocols:; Service Type
C-1 A PPENDIX C S PECIFICATIONS Interface Specifications ADSL Standards Conformance Basic ADSL: ANSI T1.413 Issue 2 (full rate ADSL), RADSL, ITU G.992.1 (G.dmt), ITU G.992.2 (G.lite) Transport Protocols: PPP/ATM (RFC 2364), Bridged and Router IP/ATM (RFC 1483), Classical IP/ATM (RFC 1577), Native AT...
Page 96 - Simultaneous data/voice; Ethernet; Full or half duplex; Advanced Features; IP-based with RIP 2 support, static routing
S PECIFICATIONS C-2 Media Type Simultaneous data/voice Media Connection RJ-11 phone wire connection to ADSL provider Service Provider Equipment Digital Subscriber Line Access Multiplexer (DSLAM) Ethernet Access Method CSMA/CD Standards Conformance IEEE 802.3, 802.3u Communication Rate 10/100 Mbps Co...
Page 97 - Management; via HTTP protocol to access embedded management agent; Physical Characteristics
P HYSICAL C HARACTERISTICS C-3 Management System Configuration Web-based management via HTTP protocol to access embedded management agent Physical Characteristics Ports 1 RJ-11 ADSL, 1 RJ-45 10/100 Mbps Ethernet Indicator Panel ADSL (TxD, RxD), Ethernet (Speed, Link/Act), Power, Alarm Dimensions 220...
Page 98 - Immunity; Warranty; Three years
S PECIFICATIONS C-4 C-Tick - AS/NZS 3548 (1995) Class B Immunity IEC 1000-4-2/3/4/6 Safety UL 1950EN60950 (TÜV)CSA 22.2 No. 950 Warranty Three years
Page 99 - Asymmetric Digital Subscriber Line
Glossary-1 A PPENDIX D G LOSSARY 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5 UTP cable. 100BASE-TX IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5 UTP cable. Asymmetric Digital Subscriber Line (ADSL) ADSL allows more ...
Page 101 - Dynamic Routing; A protocol commonly used to transfer files across the Internet.; Filter
G LOSSAR Y Glossary-3 Dynamic Routing Dynamic routing uses a routing protocol to exchange routing information with neighboring routers on the network. It calculates routing tables based on a given metric, such as least number of hops or shortest path. It can respond to changes in the status or traff...
Page 102 - Internet Service Provider; A group of interconnected computer and support devices.
G LOSSAR Y Glossary-4 G.lite A standard that defines the more economical splitterless ADSL connection that transmits data at up to 1.5 Mbps downstream and 512 Kbps upstream. This ADSL option can be installed without an on-site visit by the service provider. IEEE 802.3 Defines carrier sense multiple ...
Page 104 - Password Authentication Protocol; A virtual network circuit that is permanently available.; Ping
G LOSSAR Y Glossary-6 almost arbitrary number of connections is multiplexed using TCP port information. Password Authentication Protocol (PAP) A basic form of authentication, in which a user’s name and password are transmitted over a network and compared to a table of name-password pairs. Permanent ...
Page 105 - See Multiprotocol Encapsulation; Quality of Service
G LOSSAR Y Glossary-7 Protocol Multiplexing See Multiprotocol Encapsulation Quality of Service (QoS) A network protocol used to specify a guaranteed throughput level. This protocol is often used by ATM providers to guarantee their customers a minimum end-to-end latency. Rate Adaptive ADSL (RADSL) An...
Page 107 - Virtual Host
G LOSSAR Y Glossary-9 Virtual Host A network device, such as this router, or a server configured to perform Network Address Translation (NAT). Virtual Path An ATM network connection between two nodes that spans across a series of routers or Layer-3 switches. Virtual Server Transparently redirects sp...
