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-congurable. 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 signicance 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-congurable, so
you can specify an address that non-Dell Networking systems can recognize and rewrite the address at egress edge.
Figure 110. 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 prole.
Service Provider Bridging
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