For 1-, 4-, and 8-port Gigabit Ethernet IQ2 PICs, 1-port 10-Gigabit Ethernet IQ2 PICs, and all MX-series router Gigabit and 10-Gigabit Ethernet interfaces configured for 802.1Q flexible VLAN tagging, you can configure mixed tagging support for untagged packets on a port. Untagged packets are accepted on the same mixed VLAN-tagged port. To accept untagged packets, include the native-vlan-id statement and the flexible-vlan-tagging statement at the [edit interface interface-name] hierarchy level:
- [edit interfaces ge-fpc/pic/port]
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flexible-vlan-tagging;
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native-vlan-id number;
The logical interface on which untagged packets are to be received must be configured with the same native VLAN ID as that configured on the physical interface. To configure the logical interface, include the vlan-id statement (matching the native-vlan-id statement on the physical interface) at the [edit interface interface-name unit logical-unit-number] hierarchy level.