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What Problem are We Trying to Solve? Ethernet VLAN Circuits (solid red lines) PBB Tunnels (green tubes) Ethernet Circuits in Mac-in-Mac Encapsulation (dotted red lines) Conditions: All-Ethernet network The access/aggregation net’s are Q-in-Q The core is PBB-based How to aggregate Ethernet flows into PBB tunnels? ? Aggregator |