June 30, 2006 Chapter 7: Second Level Commands
SG1-UM-8500-03 7-47
2.SG-1 as xDSL aggregator using Gigabit Ethernet network
In this scenario, a PPP session is initiated on an Ethernet-connected client through a standard ADSL modem.
The session is transported over the Ethernet and terminated by the SG-1, which is acting as an xDSL
aggregator.
Scenario highlights:
• The SG-1 terminates the PPPoE sessions initiated at users PCs and grants a service.
• User packets are passed as follows:
– The user PC, which runs PPP client, encapsulates the PPP packet with Ethernet.
– The PPPoE packet is being sent from the user PC to the xDSL modem.
– The xDSL modem encapsulates it with DSL.
– The DSLAM de-encapsulates the DSL header and send the Ethernet packets including broadcasts.
– The SG-1 de-encapsulates the Ethernet and terminate the PPP session.
Using the pppoe enable command
The pppoe enable interface command enables PPPoE negotiation for a specific interface in the system.
Usage
pppoe enable interface <slot number>\<port number\[sub-interface number]>
Parameter(s)
Table 7-10. pppoe enable parameters
Example(s)
Using the no pppoe enable command
The no pppoe enable interface command disables PPPoE negotiation for a specific interface in the system.
Usage
no pppoe enable interface <slot number>\<port number\[sub-interface number]>
For parameters and examples, refer to “Using the pppoe enable command”.
Host(config)# pppoe enable interface
Parameter Description Legal values/range
<slot number> Slot number. 0 - 2
<port number> Physical port number. 0 - 2
<sub-interface number> Sub interface number. 1- 2000
Host(config)# pppoa enable interface 0 \ 1
Host(config)# no pppoe enable interface