Deployment Guide

Table Of Contents
Dell EMC Networking OS Behavior: In Dell EMC Networking OS versions prior to 8.2.1.0, the MAC address that Dell EMC
Networking systems use to overwrite the Bridge Group Address on ingress was non-configurable. The value of the L2PT MAC
address was the Dell EMC Networking-unique MAC address, 01-01-e8-00-00-00. As such, with these Dell EMC Networking OS
versions, Dell EMC Networking systems are required at the egress edge of the intermediate network because only Dell EMC
Networking OS could recognize the significance of the destination MAC address and rewrite it to the original Bridge Group
Address. In Dell EMC Networking OS version 8.2.1.0 and later, the L2PT MAC address is user-configurable, so you can specify
an address that non-Dell EMC Networking systems can recognize and rewrite the address at egress edge.
Figure 120. VLAN Stacking with L2PT
Implementation Information
L2PT is available for STP, RSTP, MSTP, and PVST+ BPDUs.
No protocol packets are tunneled when you enable VLAN stacking.
L2PT requires the default CAM profile.
Enabling Layer 2 Protocol Tunneling
To enable Layer 2 protocol tunneling, use the following command.
1. Verify that the system is running the default CAM profile. Use this CAM profile for L2PT.
EXEC Privilege mode
820
Service Provider Bridging