P-660HW-T v2 User’s Guide
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Chapter 5 WAN Setup
By implementing PPPoE directly on the ZyXEL Device (rather than individual computers),
the computers on the LAN do not need PPPoE software installed, since the ZyXEL Device
does that part of the task. Furthermore, with NAT, all of the LANs’ computers will have
access.
5.1.1.3 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.
5.1.1.4 RFC 1483
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.
5.1.2 Multiplexing
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be
sure to use the multiplexing method required by your ISP.
5.1.2.1 VC-based Multiplexing
In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit;
for example, VC1 carries IP, etc. VC-based multiplexing may be dominant in environments
where dynamic creation of large numbers of ATM VCs is fast and economical.
5.1.2.2 LLC-based Multiplexing
In this case one VC carries multiple protocols with protocol identifying information being
contained in each packet header. Despite the extra bandwidth and processing overhead, this
method may be advantageous if it is not practical to have a separate VC for each carried
protocol, for example, if charging heavily depends on the number of simultaneous VCs.
5.1.3 Encapsulation and Multiplexing Scenarios
For Internet access you should use the encapsulation and multiplexing methods used by your
ISP. Consult your telephone company for information on encapsulation and multiplexing
methods for LAN-to-LAN applications, for example between a branch office and corporate
headquarters. There must be prior agreement on encapsulation and multiplexing methods
Содержание P-660HW-T - V2
Страница 1: ...P 660HW T v2 802 11g Wireless ADSL 2 4 port Gateway User s Guide Version 3 40 Edition 1 12 2006...
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Страница 7: ...P 660HW T v2 User s Guide Safety Warnings 7 This product is recyclable Dispose of it properly...
Страница 26: ...P 660HW T v2 User s Guide 26 List of Figures...
Страница 40: ...P 660HW T v2 User s Guide 40 Chapter 1 Getting To Know Your ZyXEL Device...
Страница 53: ...P 660HW T v2 User s Guide Chapter 2 Introducing the Web Configurator 53 Figure 13 System General...
Страница 54: ...P 660HW T v2 User s Guide 54 Chapter 2 Introducing the Web Configurator...
Страница 74: ...P 660HW T v2 User s Guide 74 Chapter 4 Bandwidth Management Wizard...
Страница 92: ...P 660HW T v2 User s Guide 92 Chapter 5 WAN Setup...
Страница 124: ...P 660HW T v2 User s Guide 124 Chapter 7 LAN Setup...
Страница 156: ...P 660HW T v2 User s Guide 156 Chapter 10 Firewall Configuration Figure 85 Firewall Edit Rule...
Страница 170: ...P 660HW T v2 User s Guide 170 Chapter 10 Firewall Configuration...
Страница 174: ...P 660HW T v2 User s Guide 174 Chapter 11 Content Filtering...
Страница 178: ...P 660HW T v2 User s Guide 178 Chapter 12 Static Route...
Страница 190: ...P 660HW T v2 User s Guide 190 Chapter 13 Bandwidth Management...
Страница 194: ...P 660HW T v2 User s Guide 194 Chapter 14 Dynamic DNS Setup...
Страница 206: ...P 660HW T v2 User s Guide 206 Chapter 15 Remote Management Configuration...
Страница 218: ...P 660HW T v2 User s Guide 218 Chapter 16 Universal Plug and Play UPnP...
Страница 224: ...P 660HW T v2 User s Guide 224 Chapter 17 System...
Страница 244: ...P 660HW T v2 User s Guide 244 Chapter 18 Logs...
Страница 250: ...P 660HW T v2 User s Guide 250 Chapter 19 Tools...
Страница 256: ...P 660HW T v2 User s Guide 256 Chapter 21 Troubleshooting...
Страница 260: ...P 660HW T v2 User s Guide 260 Appendix A Product Specifications...
Страница 280: ...P 660HW T v2 User s Guide 280 Appendix D Wall mounting Instructions...
Страница 308: ...P 660HW T v2 User s Guide 308 Appendix G Command Interpreter...
Страница 320: ...P 660HW T v2 User s Guide 320 Appendix J Splitters and Microfilters...
Страница 334: ...P 660HW T v2 User s Guide 334 Appendix K Wireless LANs...
Страница 342: ...P 660HW T v2 User s Guide 342 Appendix L Pop up Windows JavaScripts and Java Permissions Figure 195 Java Sun...