Administrator Guide

Dell Networking OS Behavior: In the Dell Networking OS versions prior to 8.2.1.0, the MAC address that Dell
Networking systems use to overwrite the Bridge Group Address on ingress was non-configurable. The value
of the L2PT MAC address was the Dell Networking-unique MAC address, 01-01-e8-00-00-00. As such, with
these versions, Dell Networking systems are required at the egress edge of the intermediate network because
only the Dell Networking OS could recognize the significance of the destination MAC address and rewrite it
to the original Bridge Group Address. In the Dell 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 Networking systems can recognize
and rewrite the address at egress edge.
Figure 109. VLAN Stacking with L2PT
Service Provider Bridging 826