TP-Link TL-SL5428E User Guide - Page 77
VPN Config
UPC - 845973020873
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a port receives a packet, this port will replace the TPID value in the outer VLAN tag of this packet with the user-defined value and then send the packet again. Thus, the VLAN-VPN packets sent to the public network can be recognized by devices of other manufacturers. The position of the TPID field in an Ethernet packet is the same as the position of the protocol type field in the packet without VLAN Tag. Thus, to avoid confusion happening when the switch forwards or receives a packet, you must not configure the following protocol type values listed in Table 1-1as the TPID value. Protocol type ARP IP MPLS IPX IS-IS LACP 802.1X Value 0x0806 0x0800 0x8847/0x8848 0x8137 0x8000 0x8809 0x888E Table 8-3 Values of Ethernet frame protocol type in common use This VLAN VPN function is implemented on the VPN Config, VLAN Mapping and Port Enable pages. 8.4.1 VPN Config This page allows you to enable the VPN function, adjust the global TPID for VLAN-VPN packets and enable the VPN up-link port. When VPN mode is enabled, the switch will add a tag to the received tagged packet basing on the VLAN mapping entries. Choose the menu "VLAN→VLAN VPN→VPN Config" to load the following page. Figure 8-12 VPN Global Config The following entries are displayed on this screen: ¾ Global Config 69