This chapter describes configuring 802.1Q VLAN interfaces, subinterfaces, and attachment circuits for Cisco 8000 Series Routers.
Prerequisites for configuring 802.1Q VLAN interfaces
This topic lists the prerequisites that you must meet before you configure 802.1Q VLAN interfaces on the Cisco 8000 Series Router.
802.1Q VLAN
This topic describes 802.1Q VLANs on the Cisco 8000 Series Router, including how the IEEE 802.1Q protocol standard uses VLAN tags to divide networks into logically separated broadcast domains.
Subinterfaces
This topic describes subinterfaces on the Cisco 8000 Series Router, which are logical interfaces created on a hardware interface to segregate traffic into separate logical channels and better utilize the available bandwidth.
Subinterface MTU
This topic describes how a subinterface on the Cisco 8000 Series Router inherits its maximum transmission unit (MTU) from the parent physical interface, with an additional four bytes allowed for the 802.1Q VLAN tag.
Native VLAN
This topic describes how the Cisco 8000 Series Router provides the equivalent of native VLAN functionality.
Layer 2 VPN on VLANs
This topic describes how Layer 2 Virtual Private Network (L2VPN) on VLANs works on the Cisco 8000 Series Router, and how to configure VLAN attachment circuits (ACs) for L2VPN services.
Configure 802.1Q VLAN subinterfaces
This topic describes how to configure 802.1Q VLAN subinterfaces on the Cisco 8000 Series Router by setting the Layer 2 encapsulation and assigning an IP address to the subinterface.
Configure an attachment circuit on a VLAN
This topic describes how to configure a Layer 2 attachment circuit (AC) on a VLAN on the Cisco 8000 Series Router.
Remove an 802.1Q VLAN subinterface
This topic describes how to remove a previously configured 802.1Q VLAN subinterface on the Cisco 8000 Series Router.
VLAN subinterfaces example
This topic provides configuration examples that show how to create VLAN subinterfaces on the Cisco 8000 Series Router, including subinterfaces on a physical Ethernet interface and on an Ethernet bundle.
Layer 2 interface VLAN encapsulation using VLAN ranges and lists
This topic describes Layer 2 interface VLAN encapsulation using VLAN ranges and lists on the Cisco 8000 Series Router, which lets you group multiple VLAN IDs together for encapsulation to simplify configuration and improve scalability.