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Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 6 Configuring PPPoE over Ethernet and IEEE 802.1Q VLAN
PPPoE over IEEE 802.1Q VLANs
PPPoE over IEEE 802.1Q VLANs
The PPPoE over IEEE 802.1Q VLANs feature enables the Cisco 10000 series router to support PPPoE
over IEEE 802.1Q encapsulated VLAN interfaces. 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.
Note PPPoE is disabled by default on a VLAN.
The PPPoE over IEEE 802.1Q VLANs feature is described in the following topics:
• Feature History for PPPoE over IEEE 802.1Q VLANs, page 6-7
• Restrictions for PPPoE over IEEE 802.1Q VLANs, page 6-7
• Configuration Tasks for PPPoE over IEEE 802.1Q VLANs, page 6-7
• Configuration Examples for PPPoE over IEEE 802.1Q VLANs, page 6-10
• Verifying PPPoE over Ethernet and IEEE 802.1Q VLAN, page 6-11
• Clearing PPPoE Sessions, page 6-12
Feature History for PPPoE over IEEE 802.1Q VLANs
Restrictions for PPPoE over IEEE 802.1Q VLANs
The PPPoE over IEEE 802.1Q VLANs feature has the following restrictions:
• The Cisco 10000 series router currently supports the PPPoE over IEEE 802.1Q VLANs feature on
Gigabit Ethernet line cards and Fast Ethernet 8-port half-height line cards. The Fast Ethernet port
of the performance routing engine (PRE) does not support this feature.
• The Cisco 10000 series router supports this feature for PPPoE dialin only. PPPoE dialout (client) is
not supported.
Configuration Tasks for PPPoE over IEEE 802.1Q VLANs
To configure the PPPoE over IEEE 802.1Q VLANs feature, perform the following configuration tasks:
• Configuring a Virtual Template Interface, page 6-8
• Creating an Ethernet 802.1Q Encapsulated Subinterface and Enabling PPPoE, page 6-8
Cisco IOS Release Description Required PRE
12.2(4)BZ1 This feature was introduced on the Cisco 10000 series
router.
PRE1
12.3(7)XI1 This feature was integrated into Cisco IOS Release
12.3(7)XI1.
PRE2
12.2(28)SB This feature was integrated into Cisco IOS Release
12.2(28)SB.
PRE2