H3C Technologies H3C SecPath F5020 - Manual (Page 27)

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• As shown in Figure 3 , a PPPoE session is established between each host (PPPoE client) and the
carrier router (PPPoE server). The service provider assigns an account to each host for billing and
control. The host must be installed with PPPoE client software.
Figure 3 Network structure 2
Feature and hardware compatibility
Hardware PPPoE client compatibility
F5020/F5040 No
M9006/M9010/M9014 No
VFW1000 Yes
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,
and 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—When you configure the link idle time as 0 by using the dialer timer idle
command and do not configure the dialer diagnose command, this mode is specified.
• On-demand mode—When you configure the link idle time as a value other than 0 by using the
dialer timer idle command and do not configure the dialer diagnose command, this mode is
specified.
• Diagnostic mode—When you configure the dialer diagnose command, this mode is specified.
Internet
PPPoE Server
Host A
Host B
Router
PPPoE Client
PPPoE Client