
249
Nortel Business Secure Router 222 Configuration — Advanced
Appendix D
PPPoE
PPPoE in action
An ADSL modem bridges a PPP session over Ethernet (PPP over Ethernet, RFC
2516) from your PC to an ATM PVC (Permanent Virtual Circuit), which connects
to a DSL Access Concentrator where the PPP session terminates (see
Figure 155
).
One PVC can support any number of PPP sessions from your LAN. PPPoE
provides access control and billing functionality in a manner similar to dial-up
services using PPP.
Benefits of PPPoE
PPPoE offers the following benefits:
•
It provides you with a familiar dial-up networking (DUN) user interface.
•
It lessens the burden on the carriers of provisioning virtual circuits all the way
to the ISP on multiple switches for thousands of users. For GSTN (PSTN and
ISDN), the switching fabric is already in place.
•
It allows the ISP to use the existing dial-up model to authenticate and
(optionally) to provide differentiated services.
Traditional dial-up scenario
Figure 155
depicts a typical hardware configuration where the PCs use traditional
dial-up networking.
Содержание 222
Страница 14: ...14 Contents NN47922 501 ...
Страница 24: ...24 Tables NN47922 501 ...
Страница 30: ...30 Preface NN47922 501 ...
Страница 46: ...46 Chapter 2 Introducing the SMT NN47922 501 SMT menus at a glance Figure 6 SMT overview ...
Страница 70: ...70 Chapter 3 WAN and Dial Backup Setup NN47922 501 ...
Страница 78: ...78 Chapter 4 LAN setup NN47922 501 ...
Страница 100: ...100 Chapter 6 Remote Node setup NN47922 501 ...
Страница 104: ...104 Chapter 7 IP Static Route Setup NN47922 501 ...
Страница 132: ...132 Chapter 9 Network Address Translation NAT NN47922 501 ...
Страница 154: ...154 Chapter 11 Filter configuration NN47922 501 ...
Страница 158: ...158 Chapter 12 SNMP Configuration NN47922 501 ...
Страница 198: ...198 Chapter 15 Firmware and configuration file maintenance NN47922 501 ...
Страница 212: ...212 Chapter 17 Remote Management NN47922 501 ...
Страница 232: ...232 Appendix B Triangle Route NN47922 501 ...
Страница 252: ...252 Appendix D PPPoE NN47922 501 ...
Страница 260: ...260 Appendix F Hardware specifications NN47922 501 ...
Страница 270: ...270 Appendix G IP subnetting NN47922 501 ...
Страница 308: ...308 Appendix H Command Interpreter NN47922 501 ...
Страница 312: ...312 Appendix I NetBIOS filter commands NN47922 501 ...
Страница 336: ...336 Appendix L Brute force password guessing protection NN47922 501 ...