Command Line Reference Guide

VLAN Stacking | 1371
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VLAN Stacking
Overview
With the VLAN-Stacking feature (also called Stackable VLANs and QinQ), available on all Dell
Force10 platforms (C-Series
c, E-Series e, and S-Series s) that are supported by this version of
FTOS, you can “stack” VLANs into one tunnel and switch them through the network transparently.
VLAN Stacking is supported on E-Series ExaScale
e
x
with FTOS 8.2.1.0. and later.
Commands
The commands included are:
• 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
For information on basic VLAN commands, refer to Virtual LAN (VLAN) Commands in the chapter
Layer 2.
Important Points to Remember
• If Spanning Tree Protocol (STP) is not enabled across the Stackable VLAN network, STP BPDUs
from the customer’s networks are tunneled across the Stackable VLAN network.
•If STP is enabled across the Stackable VLAN network, STP BPDUs from the customer’s networks
are consumed and not tunneled across the Stackable VLAN network unless protocol tunneling is
enabled.
Note: For details on protocol tunneling on the E-Series, refer to Chapter 54, Service Provider
Bridging.
• 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 is not supported
if the VLAN contains Stackable VLAN access ports. This facility is provided for 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.
• It is recommended that you do not use the same MAC address, on different customer VLANs, on
the same Stackable VLAN.