Figure 1-2 Cisco Enterprise Composite Network Model
Enterprise Campus Enterprise
Edge
Service
Provider
Edge
ISP A
E-Commerce
ISP B
Internet
Connectivity
Edge
Distribution
PSTN
Remote-
Access VPN
Frame
Relay,
ATM,
PPP
WAN
Management
Building Distribution
Campus Backbone
Server Farm
Building Access
CHAPTER 2
Connecting
Teleworkers
This chapter provides information and commands concerning the following topics:
??? Con?¬?guration example: DSL using PPPoE
??” Basic router con?¬?guration
??” Understanding VPDN
??” Declaring PPPoE at the physical interface
??” Negotiating PPPoE addressing
??” Adjusting packet sizes
??” Creating a dialer interface
??” Declaring PPP at the logical dialer interface
??” Choosing ???interesting??? dialer traf?¬?c
??” Verifying PPPoE and PPP
??? Con?¬?guring PPPoA
??? Con?¬?guring a cable modem connection
??” Connection using an external cable modem
??” Bridging the cable and Ethernet interfaces (internal modem)
??? Con?¬?guring L2 bridging using a Cisco cable modem HWIC
??? Con?¬?guring L3 routing using a Cisco cable modem HWIC
??” Routing a Cisco cable modem HWIC and Ethernet interface
Con?¬?guration Example: DSL Using PPPoE
Figure 2-1 shows an asymmetric digital subscriber line (ADSL) connection to the ISP
DSL address multiplexer.
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