Cisco 7604-RSP720C-R Configuration Manual page 286

Configuring Q-in-Q Tunnels and Layer 2 Protocol Tunneling
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
You must set the EtherType only on the egress trunk interface that carries double tagged frames (the
Note
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).
The EtherType value you set will affect all the tagged packets going out on the interface (not just Q-in-Q
Caution
packets).
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
DETAILED STEPS
Command
Step 1
configure terminal
Example:
switch# configure terminal
Step 2
interface ethernet slot/port
Example:
switch(config)# interface ethernet 7/1
Step 3
switchport
Example:
switch(config-if)# switchport
Step 4
switchport dot1q ethertype value
Example:
switch(config-if)# switchport dot1q
ethertype 0x9100
Step 5
no switchport dot1q ethertype
Example:
switch(config-if)# no switchport dot1q
ethertype
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
9-10
configure terminal
interface ethernet slot/port
switchport
switchport dot1q ethertype value
no switchport dot1q ethertype
exit
copy running-config startup-config
Chapter 9 Configuring Q-in-Q VLAN Tunnels
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.
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