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Table Of Contents
VLAN Stacking
With the virtual local area network (VLAN)-stacking feature (also called stackable VLANs and QinQ), you can stack VLANs
into one tunnel and switch them through the network transparently.
For more information about basic VLAN commands, refer to the Virtual LAN (VLAN) Commands section in the Layer 2 chapter.
Important Points to Remember
If you do not enable the spanning tree protocol (STP) across the stackable VLAN network, STP bridge protocol data units
(BPDUs) from the customers networks are tunneled across the stackable VLAN network.
If you do enable STP across the stackable VLAN network, STP BPDUs from the customers networks are consumed and not
tunneled across the stackable VLAN network unless you enable protocol tunneling.
Layer 3 protocols are not supported on a stackable VLAN network.
Assigning an IP address to a stackable VLAN is supported when all the members are only stackable VLAN trunk ports. IP
addresses on a stackable VLAN-enabled VLAN are not supported if the VLAN contains stackable VLAN access ports. This
facility is provided for the simple network management protocol (SNMP) management over a stackable VLAN-enabled VLAN
containing only stackable VLAN trunk interfaces. Layer 3 routing protocols on such a VLAN are not supported.
Dell Networking OS recommends that you do not use the same MAC address, on different customer VLANs, on the same
stackable VLAN.
Interfaces configured using stackable VLAN access or stackable VLAN trunk commands do not switch traffic for the default
VLAN. These interfaces are switch traffic only when they are added to a non-default VLAN.
Topics:
dei enable
dei honor
dei mark
member
show interface dei-honor
show interface dei-mark
vlan-stack access
vlan-stack compatible
vlan-stack dot1p-mapping
vlan-stack protocol-type
vlan-stack trunk
dei enable
Make packets eligible for dropping based on their drop eligible indicator (DEI) value.
Syntax
dei enable
Defaults Packets are colored green; no packets are dropped.
Command Modes CONFIGURATION
Supported Modes FullSwitch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
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