Configuring The Allowed Vlans For Trunking Ports - Cisco nexus 5000 series Cli Configuration Manual

Chapter 1 Configuring Access and Trunk Interfaces
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
Command
Step 2
switch(config)# interface {type
slot/port | port-channel number}
Step 3
switch(config-if)# switchport trunk
native vlan vlan-id
This example shows how to set the native VLAN for Ethernet 3/1 Ethernet trunk port to VLAN 5:
switch# configure terminal
switch(config)# interface ethernet 3/1
switch(config-if)# switchport trunk native vlan 5

Configuring the Allowed VLANs for Trunking Ports

You can specify the IDs for the VLANs that are allowed on the specific trunk port.
Before you configure the allowed VLANs for the specified trunk ports, ensure that you are configuring
the correct interfaces and that the interfaces are trunks.
To configure the allowed VLAN for a trunk port, perform this task:
Command
Step 1
switch# configure terminal
Step 2
switch(config)# interface {type
slot/port | port-channel number}
Step 3
switch(config-if)# switchport trunk
allowed vlan {vlan-list all | none [add
|except | none | remove {vlan-list}]}
This example shows how to add VLANs 15 to 20 to the list of allowed VLANs on the Ethernet 3/1
Ethernet trunk port:
switch# configure terminal
switch(config)# interface ethernet 3/1
switch(config-if)# switchport trunk allow vlan 15-20
OL-16597-01
Purpose
Specifies an interface to configure, and enters interface
configuration mode.
Sets the native VLAN for the 802.1Q trunk. Valid
values are from 1 to 4094, except those VLANs
reserved for internal use. The default value is VLAN1.
Purpose
Enters configuration mode.
Specifies an interface to configure, and enters interface
configuration mode.
Sets allowed VLANs for the trunk interface. The
default is to allow all VLANs on the trunk interface: 1
to 3967 and 4048 to 4094. VLANs 3968 to 4047 are the
default VLANs reserved for internal use by default;
this group of VLANs is configurable. By default, all
VLANs are allowed on all trunk interfaces.
You cannot add internally allocated VLANs as
Note
allowed VLANs on trunk ports. The system
returns a message if you attempt to list an
internally allocated VLAN as an allowed
VLAN.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Configuring Access and Trunk Interfaces
1-7