Cisco N7K-C7010 Configuration Guide - Page 102

Configuring Access and Trunk Interfaces Chapter 3 Configuring Layer 2 Interfaces Send document comments to [email protected] Configuring the Device to Tag Native VLAN Traffic When you are working with 802.1Q trunked interfaces, you can maintain the tagging for all packets that enter with a tag that matches the value of the native VLAN ID and drops all untagged traffic (you will still carry control traffic on that interface). This feature applies to the entire device; you cannot apply it to selected VLANs on a device. The vlan dot1q tag native global command changes the behavior of all native VLAN ID interfaces on all trunks on the device. Note If you enable 802.1Q tagging on one device and disable it on another device, all traffic is dropped on the device with this feature disabled. You must configure this feature identically on each device. BEFORE YOU BEGIN Ensure that you are in the correct VDC (or use the switchto vdc command). You can repeat VLAN names and IDs in different VDCs, so you must confirm that you are working in the correct VDC. SUMMARY STEPS 1. configure terminal 2. vlan dot1q tag native 3. exit 4. (Optional) show vlan 5. (Optional) copy running-config startup-config 3-20 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x OL-23435-03