Service Manual
Dell Networking OS Behavior: In 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 Dell Networking OS versions, Dell Networking systems are required at
the egress edge of the intermediate network because only Dell Networking OS could recognize the signicance of the destination
MAC address and rewrite it to the original Bridge Group Address. In 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 109. 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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