Users Guide

Figure 113. VLAN Stacking in a Service Provider Network
Important Points to Remember
• Interfaces that are members of the Default VLAN and are configured as VLAN-Stack access or trunk ports do not switch untagged
traffic. To switch traffic, add these interfaces to a non-default VLAN-Stack-enabled VLAN.
• Dell Networking cautions against using the same MAC address on different customer VLANs, on the same VLAN-Stack VLAN.
• You cannot ping across the trunk port link if one or both of the systems is an S4048–ON.
• This limitation becomes relevant if you enable the port as a multi-purpose port (carrying single-tagged and double-tagged traffic).
Configure VLAN Stacking
Configuring VLAN-Stacking is a three-step process.
1. Creating Access and Trunk Ports
2. Assign access and trunk ports to a VLAN (Creating Access and Trunk Ports).
3. Enabling VLAN-Stacking for a VLAN.
Related Configuration Tasks
• Configuring the Protocol Type Value for the Outer VLAN Tag
Service Provider Bridging
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