Interface Setup
Internet
ATM VCVirtual Circuit / VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier define a virtual circuit.
VPI - is a virtual path determines the way an ATM cell should be routed. The VPI is an 8-bit (in UNI) or 12-bit (in NNI) number that is included in the header of an ATM cell. The valid range for the VPI is 0 to 255. Enter the VPI assigned by the ISP.
VCI - VCI is the label given to an ATM VC to identify it and determine its destination. The VCI is a 16-bit number that is included in the header of an ATM cell. The valid range for the VCI is 32 to 65535. Enter the VCI assigned by the ISP.
ATM QoS
CBR (Constant Bit Rate) – This class is used for emulating circuit switching. The cell rate is constant with time. Select CBR to specify fixed (always on) bandwidth for voice or data traffic.
UBR (Unspecified Bit Rate) – Select UBR for applications that are non-time sensitive, such as e-mail.
rtVBR (real time Variable Bit Rate) – This class is similar to nrtVBR but is designed for applications that are sensitive to cell-delay variation. Examples for real-time VBR are voice with speech activity detection (SAD) and interactive compressed video.
nrtVBR (non-real time Variable Bit Rate) – This class allows users to send traffic at a rate that varies with time depending on the availability of user information. Statistical multiplexing is provided to make optimum use of network resources. Multimedia e-mail is an example of
nrtVBR.
PCR
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the PCR (Peak Cell Rate). This is the maximum rate at which the sender can send cells.
SCR
SCR (Sustain Cell Rate) is the average rate, as measured over a long interval, in the order of the connection lifetime.
MBS
MBS (Maximum Burst Size) refers to the maximum number of cells that can be sent at the peak rate. Type the MBS, which is less than 65535.
The router can be connected to your service provider in any of the following ways.
Dynamic IP Address - Obtain an IP address automatically from your service provider.
Static IP Address - Uses a static IP address. Your service provider gives a static IP address to access Internet services.
PPPoE/PPPoA - PPPoE (PPP over Ethernet) and PPPoA (PPP over ATM) are common connection methods used for xDSL.
Bridge Mode - Bridge Mode is a common connection method used for xDSL modem.
Dynamic IP Address/Static IP Address/PPPoE/PPPoA/Bridge ModeAfter you have selected the ISP Type, this web page will be varied depending on the ISP Type you select. You have to continue setting some parameters. Please refer to the following table for the explanation of each parameter.
User Name - Enter the username exactly as your ISP assigned.
Password - Enter the password that your ISP has assigned to you.
Encapsulation - Please check with your ISP the method of multiplexing. In Bridge Mode, please select “1483 Bridge IP LLC” or “1483 Bridge IP VC-Mux”. In PPPoE/PPPoA mode, please select “PPPoE LLC”, “PPPoE VC-Mux”, “PPPoA LLC”, or “PPPoA VC-Mux”.
Bridge Interface - This router built-in ADSL modem is able to connect to ISP automatically.
Alternatively, if you want to use the dial up software to manually connect to the ISP, you have to activate the ”Bridge Interface”.
Connection Always On – The connection will be kept always on. If the connection is interrupted, the router will re-connect automatically.
Connect On-Demand – Only connect when you want to surf the Internet. “Close if idle for xx minutes” is set to stop the connection when the network traffic is not sending or receiving after an idle time.
Connect Manually – After you have selected this option, please go to Status page. You will see the “Connect” button, click it and the router will connect to the ISP. If you want to stop the connection, please click “Disconnect” button.
TCP MSS Option - The “TCP MSS Option” enables the configuration of the maximum segment size (MSS) for transient packets that traverse a router, specifically TCP segments in the SYN
bit set, when PPPoE is being used in the network. Please specify the MSS range from 100 to 1452 bytes or 0 byte as the default value.
Get IP Address - Choose Static or Dynamic IP Address. If Static IP is selected, please set the IP Address, Subnet Mask and Gateway obtained from your ISP.
Static IP Address - Enter the IP Address assigned by your ISP.
IP Subnet Mask - Enter the Subnet Mask assigned by your ISP.
Gateway - Enter the Gateway assigned by your ISP.
NAT - NAT (Network Address Translation), an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic. When NAT is enabled, the router will help to make all necessary IP address translations for the PC connected to the router to access the Internet.
Default Route - When “Default Router” is enabled, all the packets for destinations not known by the router's routing table are sent to the default route. By default, it is enabled.
TCP MTU Option - MTU (Maximum Transmission Unit) determine the maximum size of each packet in any transmission within the network. Please specify the MTU range from 100 to
1500 bytes or 0 byte as the default value.
Dynamic Route Dynamic routing allows routing tables in routers to change as the possible routes change. This router supports RIP1, RIP2-B and RIP2-M protocols for dynamic routing. After the RIP protocol is selected, please choose the RIP direction from “None”, “Both”, “IN
Only” or “OUT Only”.
Multicast - Specify the method of transmitting data simultaneously to many receivers. Please select “IGMP v1” or “IGMP v2” as the multicast protocol or select “Disabled” to disable
the function.
