encapsulation

This command defines the type of IP encapsulation used on an ATM sub-interface.

Syntax

interface atm <group-id>/<sub-id>
encapsulation {ipoa|ethoa|pppoa}-{mux|snap}
encapsulation pppoe
encapsulation pppoe-mux

Command	Description
ipoa	Selects the IP-over-ATM, in RFC 2684 "Routed" mode.
ethoa	Selects the Ethernet-over-ATM, in RFC 2684 "Bridged" mode.
pppoa	Selects PPP over ATM client (defined in RFC 2364)
snap	Selects AAL5 LLC/SNAP mode. A LLC header is used to describe the type of payload transmitted
mux	Selects AAL5 VC-multiplexed mode, data is not prepended with an LLC header
pppoe	Selects PPPoE over ATM in LLC/SNAP mode (i.e., PPPoE client on top of ethoa-snap encapsulation)
pppoe-mux	Selects PPPoE over ATM in VC-multiplexed mode (PPPoE client on top of ethoa-mux encapsulation)

Default

By default, no ATM interfaces are defined.

Command Mode

Privileged User

Example

This example defines an ATM interface with RFC 2684 "Routed" encapsulation, with LLC/SNAP headers:

(conf-atm0/0)# encapsulation ipoa-snap