Cisco N7K-C7010 Configuration Guide - Page 286

Configuring Q-in-Q Tunnels and Layer 2 Protocol Tunneling Chapter 9 Configuring Q-in-Q VLAN Tunnels Send document comments to [email protected] Note You must set the EtherType only on the egress trunk interface that carries double tagged frames (the trunk interface that connects the service providers). If you change the EtherType on one side of the trunk, you must set the same value on the other end of the trunk (symmetrical configuration). Caution The EtherType value you set will affect all the tagged packets going out on the interface (not just Q-in-Q packets). SUMMARY STEPS 1. configure terminal 2. interface ethernet slot/port 3. switchport 4. switchport dot1q ethertype value 5. no switchport dot1q ethertype 6. exit 7. copy running-config startup-config DETAILED STEPS Step 1 Command configure terminal Step 2 Example: switch# configure terminal interface ethernet slot/port Step 3 Example: switch(config)# interface ethernet 7/1 switchport Step 4 Example: switch(config-if)# switchport switchport dot1q ethertype value Step 5 Example: switch(config-if)# switchport dot1q ethertype 0x9100 no switchport dot1q ethertype Example: switch(config-if)# no switchport dot1q ethertype Purpose Enters global configuration mode. Specifies an interface to configure, and enters interface configuration mode. Sets the interface as a Layer 2 switching port. Sets the EtherType for the Q-in-Q tunnel on the port. (Optional) Resets the EtherType on the port to the default value of 0x8100. 9-10 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x OL-23435-03