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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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Trunk Port Between the CE and PE

In the basic VPLS configuration example, the customer-facing Ethernet port on the PE router is configured as an access port. You can also configure this interface as an 802.1Q trunk. Additional configuration on the interface allows certain customer VLANs to be transported over VPLS (one VLAN per VFI instance). For each allowed customer VLAN (VLAN 111 and 222 in Example 11-11), you must configure a VFI with a unique name and VPN ID and associate it with the appropriate VLAN interface.

Example 11-11. Trunk Port VPLS Configuration
VPLS-PE-1#
!
interface FastEthernet4/2
 no ip address
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 111,222
 switchport mode trunk l2 vfi cust-one-111 manual ...

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