ZyXEL Communications P-660W-T1 v2, Руководство пользователя

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Chapter 7 WAN Setup
P-660W-Tx v2 User’s Guide
85
Connection
(PPPoA and PPPoE
encapsulation only)
Nailed-Up
Connection
Select Nailed-Up Connection when you want your connection up all the time.
The ZyXEL Device 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.
Max Idle Timeout Specify an idle time-out in the Max Idle Timeout field when you select Connect
on Demand . The default setting is 0, which means the Internet session will not
timeout.
PPPoE
Passthrough
(PPPoE
encapsulation only)
This field is available when you select PPPoE encapsulation.
In addition to the ZyXEL Device's built-in PPPoE client, you can enable PPPoE
pass through to allow up to ten hosts on the LAN to use PPPoE client software
on their computers to connect to the ISP via the ZyXEL Device. Each host can
have a separate account and a public WAN IP address.
PPPoE pass through is an alternative to NAT for application where NAT is not
appropriate.
Disable PPPoE pass through if you do not need to allow hosts on the LAN to use
PPPoE client software on their computers to connect to the ISP.
Subnet Mask
(ENET ENCAP
encapsulation only)
Enter a subnet mask in dotted decimal notation.
Refer to the appendices
to calculate a subnet mask If you are implementing
subnetting.
ENET ENCAP
Gateway
(ENET ENCAP
encapsulation only)
You must specify a gateway IP address (supplied by your ISP) when you select
ENET ENCAP in the Encapsulation field.
Zero Configuration This feature is not applicable/available when you configure the ZyXEL Device to
use a static WAN IP address or in bridge mode.
Select
Yes to set the ZyXEL Device to automatically detect the Internet
connection settings (such as the VCI/VPI numbers and the encapsulation
method) from the ISP and make the necessary configuration changes.
Select
No to disable this feature. You must manually configure the ZyXEL
Device for Internet access.
MTU The MTU (Maximum Transmission Unit, measured in bytes) sets the largest
frame size your ZyXEL Device can send. Setting a high MTU allows larger
frames to be sent from your device resulting in the more efficient use of
bandwidth. However, the size of frames on your network may be limited by the
Ethernet maximum frame size limit of 1500 bytes. Furthermore, if other devices
have a smaller MTU setting, they must fragment packets received from the
ZyXEL Device, resulting in slower overall transmission speeds. Type the MTU in
this field if your ISP gave you it. Otherwise leave it at its default setting.
Back Click Back to return to the previous screen.
Apply Click Apply to save the changes.
Cancel Click Cancel to begin configuring this screen afresh.
Table 26 WAN Setup (continued)
LABEL DESCRIPTION