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CHAPTER
6-1
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
6
Configuring PPPoE over Ethernet and
IEEE 802.1Q VLAN
The Cisco 10000 series router allows the tunneling and termination of PPP sessions over Ethernet links.
The PPPoE over Ethernet interface (PPPoEoE) feature enables the Cisco 10000 series router to tunnel
and terminate Ethernet PPP sessions over Ethernet links. The PPPoE over IEEE 802.1Q VLANs feature
enables the router to tunnel and terminate Ethernet PPP sessions across VLAN links. IEEE 802.1Q
encapsulation is used to interconnect a VLAN-capable router with another VLAN-capable networking
device. The packets on the 802.1Q link contain a standard Ethernet frame and the VLAN information
associated with that frame.
This chapter describes the following features:
• PPPoE over Ethernet, page 6-1
• Static MAC Address for PPPoE, page 6-5
• PPPoE over IEEE 802.1Q VLANs, page 6-7
• TCP MSS Adjust, page 6-12
• VLAN Range, page 6-15
For more information, see the “Configuring Broadband Access: PPP and Routed Bridge Encapsulation”
chapter in the Cisco IOS Wide-Area Networking Configuration Guide and the VLAN Range,
Release
12.2(13)T feature guide.
PPPoE over Ethernet
The PPPoE over Ethernet feature provides the ability to connect a network of hosts over a simple
bridging access device to a remote Access Concentrator. The Cisco 10000 series router supports PPPoE
over Ethernet sessions to enable multiple hosts on a shared Ethernet interface to open PPP sessions to
the PPPoE server.
The PPPoE over Ethernet feature is described in the following topics:
• Feature History for PPPoE over Ethernet, page 6-2
• Restrictions for PPPoE over Ethernet, page 6-2
• Configuration Tasks for PPPoE over Ethernet, page 6-2
• Configuration Example for PPPoE over Ethernet, page 6-5