Configuration of a PPPoE Client
This topic describes how to configure a PPPoE client. After the VPDN group has been defined, the ATM interface must be configured.
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PPPoE Client Configuration |
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Router(config)#interface atm number |
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* Configure the ATM interface |
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Router(config)#pvc vpi/vci |
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* Identify the VPI/VCI virtual circuits |
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Router(config-if-atm-vc)#pppoe-client dial-pool-number number |
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* Bind a dialer profile to the ATM interface |
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Configure the ATM interface (ADSL interface) of the Cisco 827 router with an ATM PVC and encapsulation.
To configure a PPPoE client on an ATM interface, use the interface atm number command in global configuration mode to enter interface configuration mode.
Next, specify the virtual path identifier/virtual channel identifier (VPI/VCI). A virtual path is a logical grouping of virtual circuits (VCs) that allows an ATM switch to perform operations on groups of VCs. A virtual channel describes a logical connection between the two ends of an ATM VC. A PPPoE deployment offers no easy way to dynamically discover the PVC (VPI/VCI) values. The DSL service provider will provide the VPI/VCI value to use in the Cisco 827 router.
To configure the VPI/VCI, use the pvc vpi/vci command.
Note ATM cells consist of five bytes of header information and 48 bytes of payload data. The VPI
and VCI fields in the ATM header are used to route cells through ATM networks. The VPI and VCI fields of the cell header identify the next network segment that a cell must transmit on its way to its final destination.
Next, configure the PPPoE client encapsulation and specify which dialer interface to use. Use the pppoe-client dial-pool-number number command to bind the ATM interface to a dialer interface to set the encapsulation to PPPoE client.
Finally, configure the ATM interface by default with the dsl operating-mode auto command. This default value should not be altered because it allows the Cisco 827 router to automatically detect the proper modulation method to use.
Continue reading here: PAT Configuration Example
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