ZyXEL Communications ADSL2+ Ethernet/USB Gateway 660RU-Tx Series, Руководство пользователя

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Prestige 660RU-Tx Series User’s Guide
Chapter 6 WAN Setup 68
Encapsulation Select the method of encapsulation used by your ISP from the drop-down list
box. Choices vary depending on the mode you select in the Mode field.
If you select Bridge in the Mode field, select either PPPoA or RFC 1483 .
If you select Routing in the Mode field, select PPPoA , RFC 1483 , ENET
ENCAP or PPPoE .
Multiplex Select the method of multiplexing used by your ISP from the drop-down list.
Choices are VC or LLC .
Virtual Circuit ID VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual
circuit. Refer to the appendix for more information.
VPI The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local
management of ATM traffic). Enter the VCI assigned to you.
ATM QoS Type Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for
voice or data traffic. Select UBR (Unspecified Bit Rate) for applications that are
non-time sensitive, such as e-mail. Select VBR (Variable Bit Rate) for bursty
traffic and bandwidth sharing with other applications.
Cell Rate Cell rate configuration often helps eliminate traffic congestion that slows
transmission of real time data such as audio and video connections.
Peak Cell Rate Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak
Cell Rate (PCR). This is the maximum rate at which the sender can send cells.
Type the PCR here.
Sustain Cell Rate The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note that system
default is 0 cells/sec.
Maximum Burst Size Maximum Burst Size (MBS) refers to the maximum number of cells that can be
sent at the peak rate. Type the MBS, which is less than 65535.
Login Information (PPPoA and PPPoE encapsulation only)
Service Name (PPPoE only) Type the name of your PPPoE service here.
User Name Enter the user name exactly as your ISP assigned. If assigned a name in the
form user@domain where domain identifies a service name, then enter both
components exactly as given.
Password Enter the password associated with the user name above.
IP Address This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is
not fixed; the ISP assigns you a different one each time you connect to the
Internet.
Select
Obtain an IP Address Automatically if you have a dynamic IP address;
otherwise select Static IP Address and type your ISP assigned IP address in
the IP Address field below.
Connection
(PPPoA and PPPoE
encapsulation only)
The schedule rule(s) in SMT menu 26 have priority over your Connection
settings.
Nailed-Up
Connection
Select Nailed-Up Connection when you want your connection up all the time.
The Prestige will try to bring up the connection automatically if it is disconnected.
Connect on Demand Select Connect on Demand when you don't want the connection up all the time
and specify an idle time-out in the Max Idle Timeout field.
Table 12 WAN Setup (continued)
LABEL DESCRIPTION