ZyXEL Communications P-791R, Руководство пользователя

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Chapter 21 Internet Access Setup
P-791R v2 User’s Guide
184
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 (Constant 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.
Peak Cell Rate
(PCR)
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 (SCR)
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 (MBS)
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.
My Login (PPPoE and PPPoA only) Enter the login name given to you by your ISP.
My Password (PPPoE and PPPoA only) Type your password again for confirmation.
ENET ENCAP
Gateway
(ENET ENCAP only) Enter the gateway IP address provided by your ISP.
Idle Timeout
(sec)
(PPPoE and PPPoA only) Specify an idle time-out. The default setting is 0, which
means the Internet session will not timeout.
IP Address
Assignment
If your ISP did not assign you a fixed IP address, press [SPACE BAR] and then
[ENTER] to select Dynamic , otherwise select Static and enter the IP address and
subnet mask in the following fields.
IP Address This field is enabled if the IP Address Assignment is Static . Enter the (fixed) IP
address assigned to you by your ISP (static IP address assignment is selected in the
previous field).
Network
Address
Translation
Network Address Translation (NAT) allows the translation of an Internet protocol
address used within one network (for example a private IP address used in a local
network) to a different IP address known within another network (for example a
public IP address used on the Internet).
Choose
None to disable NAT.
Choose SUA Only if you have a single public IP address. SUA (Single User
Account) is a subset of NAT that supports two types of mapping: Many-to-One and
Server .
Choose Full Feature if you have multiple public IP addresses. Full Feature
mapping types include: One-to-One , Many-to-One (SUA/PAT), Many-to-Many
Overload , Many- One-to-One and Server . When you select Full Feature you must
configure at least one address mapping set.
Please see
Chapter 7 on page 93 for a more detailed discussion on the Network
Address Translation feature.
Address
Mapping Set
This field is enabled if the Network Address Translation is Full Feature .
Enter the number of the address mapping set you want to use for your Internet
connection.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to Confirm…” to
save your configuration, or press [ESC] at any time to cancel.
Table 62 Menu 4: Internet Access Setup (continued)
FIELD DESCRIPTION