Configuring a PPPoE client
PPPoE client configuration includes dialer interface configuration and PPPoE session configuration.
A PPPoE session can operate in one of the following modes:
Permanent mode—A PPPoE session is established immediately when the line is physically up. This type of session remains until the physical link comes down or until the session is disconnected.
On-demand mode—A PPPoE session is established when there is a demand for data transmission instead of when the line is physically up. It is terminated when idled for a specific period of time.
Diagnostic mode—A PPPoE session is established immediately after the device configurations finish. The device automatically terminates the PPPoE session and then tries to re-establish a PPPoE session at a pre-configured interval. By establishing and terminating PPPoE sessions periodically, you can monitor the operating status of the PPPoE link.
The PPPoE session operating mode is determined by your configuration on the dialer interface:
Permanent mode—Used when you set the link idle time to 0 by using the dialer timer idle command and do not configure the dialer diagnose command.
On-demand mode—Used when you set the link idle time to a non-zero value by using the dialer timer idle command and do not configure the dialer diagnose command.
Diagnostic mode—Used when you configure the dialer diagnose command.