ZyXEL Communications ADSL2+4 User Manual

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 Chapter 6 WAN Setup
P-660H-T1v3s User’s Guide
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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. 
PPPoA - Point-to-Point Protocol over ATM (PPPoA) encapsulates PPP 
frames inside ATM Adaptation Layer 5 frames. PPPoA is a similar 
specification to PPPoE and is used for for connecting users on an local 
network connection (such as from a computer to a routing device) to 
the Internet through a common broadband medium, such as a single 
DSL line or wireless device. However, this specification has slightly 
lower overhead than PPPoE as it has 2 less transport layers.
RFC 1483 - Multiprotocol Encapsulation over ATM Adaptation Layer 5 
allows an ATM virtual circuit to mimic the properties of an Ethernet IP 
LAN, connecting the two either through bridging or routing.
ENET ENCAP - The MAC Encapsulated Routing Link Protocol (ENET 
ENCAP) is only implemented with the IP network protocol. IP packets 
are routed between the Ethernet interface and the WAN interface and 
then formatted so that they can be understood in a bridged 
environment. For instanced, it encapsulated routed Ethernet frames 
into bridged ATM cells.
PPPoE - Point-to-Point Protocol over Ethernet (PPPoE) encapsulates 
PPP frames inside Ethernet frames. PPPoE is a similar specification to 
PPPoA for connecting users on an local network connection (such as 
from a computer to a routing device) to the Internet through a 
common broadband medium, such as a single DSL line or wireless 
device. However, this specification has slightly higher overhead than 
PPPoA as it has 2 more transport layers.
User Name
(PPPoA and PPPoE encapsulation only.) 
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
(PPPoA and PPPoE encapsulation only.)
Enter the password associated with the user name above.
Service Name
(PPPoE only.)
Type the name of your PPPoE service here.
Multiplex
Select the method of multiplexing used by your ISP from the drop-
down list. Choices are VC or LLC.
This field is not available if you set the WAN type to Ethernet.
Virtual Circuit ID
VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define 
a virtual circuit. Refer to the appendix for more information.
These fields are not available if you set the WAN type to Ethernet.
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.
Table 12   Network > WAN > Internet Access Setup (continued)
LABEL
DESCRIPTION