Hi, I'm trying to understand the difference between using SVI and EtherChannel versus Layer 3 EtherChannel. I am proposing connecting two stacks of 3750 (using StackWise) connected together with cross-stack EtherChannel but I'm unsure what's the best method for routing across this link. Dave
There is no difference between a routed port and a layer 3 etherchannel other than you have aggregated multiple links.
Both are treated as one logical layer 3 link with an IP address on either end.