Configuring Trunk Ports; Configuring The Native Vlan For 802.1Q Trunking Ports - Cisco Nexus 3000 series Configuration Manual

Configuring Trunk Ports

Configuring Trunk Ports
You can configure an Ethernet port as a trunk port; a trunk port transmits untagged packets for the native
VLAN plus encapsulated, tagged, packets for multiple VLANs.
Note Cisco NX-OS supports only 802.1Q encapsulation.
To configure a trunk port, perform this task:
SUMMARY STEPS
1. switch# configure terminal
2. switch(config)# interface {type slot/port | port-channel number}
3. switch(config-if)# switchport mode {access | trunk}
DETAILED STEPS
Command or Action
Step 1 switch# configure terminal
Step 2 switch(config)# interface {type slot/port |
port-channel number}
Step 3 switch(config-if)# switchport mode
{access | trunk}
This example shows how to set an interface as an Ethernet trunk port:
switch# configure terminal
switch(config)# interface ethernet 1/3
switch(config-if)# switchport mode trunk
Related Topics
Understanding IEEE 802.1Q Encapsulation, on page 46

Configuring the Native VLAN for 802.1Q Trunking Ports

If you do not configure this parameter, the trunk port uses the default VLAN as the native VLAN ID.
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U1(1)
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Purpose
Enters configuration mode.
Specifies an interface to configure, and enters interface configuration
mode.
Sets the interface as an Ethernet trunk port. A trunk port can carry traffic
in one or more VLANs on the same physical link (VLANs are based on
the trunk-allowed VLANs list). By default, a trunk interface can carry
traffic for all VLANs. To specify that only certain VLANs are allowed
on the specified trunk, use the switchport trunk allowed vlan command.
Configuring Access and Trunk Interfaces