Chapter 44: Ppp Over Ethernet Client - Avaya 1000 Series Configuration Manual

Chapter 44: PPP Over Ethernet Client

PPPoE is a commonly used application in the deployment of DSL. One of the main advantages of PPPoE
is that it offers authentication based on Password Authentication Protocol (PAP) or Challenge Handshake
Authentication Protocol (CHAP).
The main purpose of PPPoE is to provide a back-up/fail-over solution. When primary connectivity goes
down, traffic will switch-over to the back-up interface, in this case a virtual PPPoE interface. A PPPoE
client session is established with a PPPoE server and traffic will be routed through this path until the
primary connectivity is restored.
The following considerations are important in configuring PPPoE:
• This implementation will only support client PPPoE.
• There will be one client PPPoE interface for each physical Ethernet interface.
• PPPoE client will not support subinterfaces.
• PPPoE will drop any data packets it receives if it is not the primary interface.
• SNMP is not supported.
• This feature will only be available in routing mode.
• IPSec over PPPoE is supported when the address is assigned dynamically to the PPPoE interface.
• There is no NAT, ACL, VLAN supported on PPPoE interface.
• PPPoE will not run on parent Ethernet interface configured for VLAN encapsulation.
• PPPoE will not run on parent Ethernet interface configured as subinterface.
• QoS will not be supported on PPPoE virtual access interface in this release.
• The PPPoE Client implementation cannot be used to connect to two DSL connections for load
sharing.
• Unicast and Multicast routing protocols are not supported on virtual access interfaces.
• PPPoE assumes that the netmask for IP address to be 30 bits wide when the address is negotiated,
for example, supplied by the server.
• The PPPoE virtual access interface will be automatically configured in the Internet security zone for
transit traffic to flow from the trusted/corp side the inbound interface needs to be configured as
trusted.
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