Chapter1 Cisco SDM Express
Internet (WAN): User Specified Encapsulation
1-14
Cisco SDM Express
OL-7141-04
Encapsulation List
The encapsulations available if you have an ADSL, G.SHDSL, or ADSL over
ISDN interface are shown in the following table.
Virtual Path Identifier Field
Enter the Virtual Path Identifier (VPI) value obtained from your service provider
or system administrator. The VPI is used in ATM switching and routing to identify
the path used for a number of connections.
Virtual Circuit Identifier Field
Enter the Virtual Circuit Identifier (VCI) value obtained from your service
provider or system administrator. The VCI is used in ATM switching and routing
to identify a particular connection within a path that it may share with other
connections.
Encapsulation Description
PPPoE Provides Point-to-Point Protocol over Ethernet encapsulation. An ATM
subinterface and a dialer interface are created when you configure PPPoE over
an ATM interface. These logical interfaces will be visible in the Summary
window.
The PPPoE option is disabled if your router is running a release of Cisco IOS
software that does not support PPPoE encapsulation.
PPPoA Provides Point-to-Point Protocol over ATM encapsulation (AAL5 SNAP, and
AAL5 MUX). The PPPoA option is disabled if your router is running a release
of Cisco IOS software that does not support PPPoA encapsulation.
RFC 1483 routing
with AAL5 SNAP
This option is available when you have selected an ATM interface. An ATM
subinterface will be created when you configure an RFC 1483 conn ection. This
subinterface will be visible in the Summary window.
RFC 1483 routing
with AAL5 MUX
This option is available when you have selected an ATM interface. An ATM
subinterface will be created when you configure an RFC 1483 conn ection. This
subinterface will be visible in the Summary window.