Chapter 5 WAN Setup
P-663H-51 User’s Guide
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5.5.1 PPPoA
PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). A PPPoA
connection functions like a dial-up Internet connection. The ZyXEL Device encapsulates the
PPP session based on RFC1483 and sends it through an ATM PVC (Permanent Virtual
Circuit) to the Internet Service Provider’s (ISP) DSLAM (digital access multiplexer). Please
refer to RFC 2364 for more information on PPPoA. Refer to RFC 1661 for more information
on PPP.
5.5.2 PPPoE
PPPoE (Point to Point Protocol over Ethernet) provides access control and billing
functionality in a manner similar to dial-up services using PPP. The ZyXEL Device bridges a
PPP session over Ethernet (PPP over Ethernet, RFC 2516) from your computer to an ATM
PVC (Permanent Virtual Circuit) which connects to ADSL Access Concentrator where the
PPP session terminates. One PVC can support any number of PPP sessions from your LAN.
For more information on PPPoE, see the appendices.
5.5.3 MER
MER (MAC Encapsulated Routing) 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 instance, it encapsulates routed
Ethernet frames into bridged ATM cells.
5.5.4 IPoA
IPoA (Internet Protocol over ATM) in RFC 1483 describes two methods for Multiprotocol
Encapsulation over ATM Adaptation Layer 5 (AAL5). The first method allows multiplexing
of multiple protocols over a single ATM virtual circuit (LLC-based multiplexing) and the
second method assumes that each protocol is carried over a separate ATM virtual circuit (VC-
based multiplexing). Please refer to the RFC for more detailed information.
5.5.5 Bridging
With bridging the ZyXEL Device has a static IP address for the connection. The ZyXEL
Device passes traffic through to another device (a computer or router for example) that
handles authenticating with the ISP.
5.6 Encapsulation
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be
sure to use the encapsulation method required by your ISP.
Summary of Contents for P-663H-51
Page 2: ......
Page 7: ...Safety Warnings P 663H 51 User s Guide 7 ...
Page 8: ...Safety Warnings P 663H 51 User s Guide 8 ...
Page 10: ...Contents Overview P 663H 51 User s Guide 10 ...
Page 20: ...List of Figures P 663H 51 User s Guide 20 ...
Page 23: ...23 PART I Introduction Introducing the ZyXEL Device 25 Introducing the Web Configurator 31 ...
Page 24: ...24 ...
Page 30: ...Chapter 1 Introducing the ZyXEL Device P 663H 51 User s Guide 30 ...
Page 36: ...Chapter 2 Introducing the Web Configurator P 663H 51 User s Guide 36 ...
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Page 66: ...Chapter 5 WAN Setup P 663H 51 User s Guide 66 Figure 30 Advanced Setup WAN Add Summary MER ...
Page 108: ...Chapter 13 Dynamic DNS Setup P 663H 51 User s Guide 108 ...
Page 114: ...Chapter 15 Port Mapping P 663H 51 User s Guide 114 ...
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Page 118: ...Chapter 16 Diagnostics P 663H 51 User s Guide 118 ...
Page 122: ...Chapter 17 Settings P 663H 51 User s Guide 122 ...
Page 126: ...Chapter 18 Logs P 663H 51 User s Guide 126 ...
Page 130: ...Chapter 19 SNMP P 663H 51 User s Guide 130 ...
Page 132: ...Chapter 20 Time P 663H 51 User s Guide 132 ...
Page 140: ...Chapter 23 Save Reboot and Logout P 663H 51 User s Guide 140 ...
Page 141: ...141 PART IV Troubleshooting and Specifications Troubleshooting 143 Product Specifications 147 ...
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Page 152: ...Chapter 25 Product Specifications P 663H 51 User s Guide 152 ...
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Page 188: ...Appendix D Common Services P 663H 51 User s Guide 188 ...
Page 196: ...Appendix F Legal Information P 663H 51 User s Guide 196 ...
Page 202: ...Appendix G Customer Support P 663H 51 User s Guide 202 ...