PPPOA is primarily responsible for performing AAL5 layer packaging processing to form an ATM cell stream for the PPP package.
PPP provides a standard method for the transfer of multi-protocol self-addressed packets based on point-to-point connection.
ATM AAL5 provides a virtual connection primarily for terminal stations that connect the same network. These connections provide a package delivery service, including error detection, but does not include error correction.
At present, most PPP implementations are based on ISO 3309 HDLC.
When the ATM network configuration is a point-to-point connection, PPP uses AAL5 as a frame mechanism.
The PPP layer treats the underlying ATM AAL5 service as a bit synchronous point pair. In this case, the PPP link corresponds to the ATM AAL5 virtual connection. The virtual connection must be a full duplex point to point connection, which may be dedicated or converted. The PPP package packet formed on the LLC in AAL5 is an optional technique for multivariate VC PPP. For more information, please visit the following page: 中文 版: http://www.networkDictionary.com/Chinese/Protocols/pppoa.php English version: http://www.networkDictionary.com/protocols/pppoa.php
