Administrator Guide

Version Description
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced on the E-Series ExaScale. C-Series and S-Series accept both bytes of
the 2-byte S-Tag TPID.
7.8.1.0 Functionality augmented for C-Series and S-Series to enable multi-purpose use of
the port.
7.7.1.0 Functionality augmented for E-Series to enable multi-purpose use of the port.
7.6.1.0 Introduced on the C-Series and S-Series.
Usage
Information
Prior to using this command, to place the interface in Layer 2 mode, execute the switchport command.
To remove the trunk port designation, first remove the port (using the no member interface
command) from all stackable VLAN-enabled VLANs.
A VLAN-Stack trunk port is also allowed to be configured as a tagged port and as an untagged port for
single-tagged VLANs. When the VLAN-Stack trunk port is also a member of an untagged VLAN, the port
must be in Hybrid mode. Refer to portmode hybrid.
In Example 1, a VLAN-Stack trunk port is configured and then also made part of a single-tagged VLAN.
In Example 2, the tag protocol identifier (TPID) is set to 8848. The “Te 2/10” port is configured to act as
a VLAN-Stack access port, while the “Te 1/0” port acts as a VLAN-Stack trunk port, switching stackable
VLAN traffic for VLAN 10, while also switching untagged traffic for VLAN 30 and tagged traffic for VLAN
40. (To allow VLAN 30 traffic, the native VLAN feature is required, by executing the portmode hybrid
command. Refer to portmode hybrid in Interfaces.
Example 1
Dell(conf-if-te-0/42)#switchport
Dell(conf-if-te-0/42)#vlan-stack trunk
Dell(conf-if-te-0/42)#show config
!
interface TenGigabitEthernet 0/42
no ip address
switchport
vlan-stack trunk
no shutdown
Dell(conf-if-te-0/42)#interface vlan 100
Dell(conf-if-vl-100)#vlan-stack compatible
Dell(conf-if-vl-100-stack)#member gigabitethernet 0/42
Dell(conf-if-vl-100-stack)#show config
!
interface Vlan 100
no ip address
vlan-stack compatible
member TenGigabitEthernet 0/42
shutdown
Dell(conf-if-vl-100-stack)#interface vlan 20
Dell(conf-if-vl-20)#tagged tengigabitethernet 0/42
Dell(conf-if-vl-20)#show config
!
interface Vlan 20
no ip address
tagged TenGigabitEthernet 0/42
shutdown
Dell(conf-if-vl-20)#do show vlan
Codes: * - Default VLAN, G - GVRP VLANs
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
G - GVRP tagged, M - Vlan-stack
NUM Status Description Q Ports
* 1 Inactive
20 Active T Te 0/42
100 Active M Te 0/42
Dell(conf-if-vl-20)#
1796
VLAN Stacking