Reference Guide

VLAN Stacking | 1455

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

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, see 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, see Chapter 52, Service Provider Bridging.

• Layer 3 protocols are not supported on a Stackable VLAN network.