You are provisioning a new VPLS on your PE router. Your customer needs to send Q-in-Q traffic across the VPLS. In this scenario, which type of encapsulation is required on your PE router's VPLS…

Question

Options

• Aether-vpls-over-atm-llc
• Bextended-vlan-vpls
• Cvlan-vpls
• Dethernet-vpls

• A
  4% (1)
• B
  80% (20)
• C
  4% (1)
• D
  12% (3)

Explanation

interface-encapsulation.html extended-vlan-vpls-Use extended virtual LAN (VLAN) VPLS encapsulation on Ethernet interfaces that have VLAN 802.1Q tagging and VPLS enabled and that must accept packets carrying TPIDs 0x8100, 0x9100, and 0x9901. vlan-vpls-Use VLAN VPLS encapsulation on Ethernet interfaces with VLAN 802.1Q tagging and VPLS enabled. The PE router expects to receive Ethernet frames with VLAN tags that are service-delimiting. These VLAN tags can be used by the service provider to separate customer traffic. For example, LAN traffic from different customers can flow through the same service provider switch, which can then apply VLAN tags to distinguish one customer's traffic from the others. The traffic can then be forwarded to the PE router. Interfaces with VLAN VPLS encapsulation accept packets carrying standard TPID values only.

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