The split personality Cisco has exposed at Cisco Live 2010 is amazing: on one hand you have the Data Center team touting the benefits of Routing at Layer 2 (an oxymoron if Iíve ever seen one), on the other hand you have Russ White extolling the virtues of good layer-3 design in the CCDE training (the quote I like most: ìIt all meets at Layer 3 … thatís why CCDE is layer-3 centricî). If youíre confused, youíre not the only one, so letís try to analyze whatís going on.