Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual page 433

pppoe acName
pppoe duplicate-protection
pppoe subinterface fastEthernet
Copyright © 2010, Juniper Networks, Inc.
Use the no version to remove the PPPoE major interface.
See pppoe.
Use to configure an access concentrator (AC) name on the PPPoE interface. When
the AC (the server) receives a PPPoE Active Discovery Initiation (PADI) packet that it
can serve, it replies by sending a PPPoE Active Discovery Offer (PADO) packet. The
PADO packet contains the AC name configured using this command.
If the AC name is not configured, the router name is used.
The AC name can be a maximum of 64 characters.
Example
host1(config-subif)#pppoe acName CYM9876
Use theno version to remove the AC name.
See pppoe acName.
Use to prevent a client from establishing more than one session using the same MAC
address.
This feature is disabled by default.
For PPPoE sessions that contain the IWF-Session DSL Forum VSA (26-254) in the
PADR packets sent from the client to the PPPoE access concentrator, multiple
subscriber sessions with the same MAC address can originate. This behavior occurs
because the interworking functionality (IWF) causes a PPPoE over ATM or PPP over
ATM (PPPoA) session to be converted by the digital subscriber line access multiplexer
(DSLAM) into a PPPoE session. As a result of this conversion, the MAC addresses of
all IWF PPPoE sessions contain the MAC address of the DSLAM device.
For PPPoE sessions with the IWF-Session VSA, duplication of MAC addresses is
configured by default. Regardless of whether the duplicate protection feature is enabled,
multiple IWF PPPoE sessions with the same MAC address (the address of the DSLAM
device) are not terminated until the limit on the maximum number of PPPoE sessions
configured on the major interface is reached.
See "Guidelines for Configuring Duplicate Protection for IWF PPPoE Sessions" on
page 391 for a list of considerations to be observed when you use the duplicate protection
feature for IWF PPPoE sessions.
Example
host1(config-subif)#pppoe duplicate-protection
Use the no version to disable duplicate protection.
See pppoe duplicate-protection.
Chapter 12: Configuring Point-to-Point Protocol over Ethernet
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