ZyXEL MAX-306 User Guide - Page 118
Customer Interface Options, Untagged
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Chapter 9 The VPN Transport Screens It is necessary to encapsulate the Ethernet pseudowire since the WiMAX connection is IP-only. MPLS information is carried in a packet's Ethernet header and, without encapsulation, would be stripped from the packet prior to the packet's transmission over the WiMAX link. The following figure shows the VPLS connection between your WiMAX Device (A) and your service provider's router (B), consisting of GRE-encapsulated Ethernet pseudowire traffic. Figure 50 VPLS Tunneling ETHERNET PSEUDOWIRES GRE TUNNEL WiMAX CONNECTION 9.3.3 Customer Interface Options Click ADVANCED > VPN Transport > Customer Interface to configure the VPNs used by the WiMAX Device. Note: You cannot delete the Untagged entry. It is required for the WiMAX Device to function properly. Figure 51 ADVANCED > VPN Transport > Customer Interface 118 User's Guide