Configuring PPPoA CPE
Cisco routers support three types of PPPoA connections:
�¡ Cisco proprietary PPPoA
�¡ The Internet Engineering Task Force (IETF)�fs Multiplex (MUX)-
encapsulated PPPoA
�¡ The IETF�fs Logical Link Control (LLC)-encapsulated PPPoA
Configuring PPPoA involves almost the same tasks as configuring PPPoE.
You still must set up the internal Ethernet interface, a dialer interface, PAT,
DHCP, and a static default route. The main difference is in the configuration
of the external interface. Because it is ATM, you need to configure virtual
path identifier (VPI) and virtual circuit identifier (VCI) information to match
that of the provider. The type of ATM encapsulation must be specified, and
the PPPoA enabled, and linked to the virtual dialer interface. A dialer pool is
associated with PVC, as shown in Example 2-7.
Example 2-7 Configuring the PPPoA ATM Interface
interface ATM1/0
description DSL interface
no ip address
dsl operating-mode auto
pvc 1/100
encapsulation aal5mux ppp dialer
dialer pool-member 1