I'd be careful here. Wouldn't this only be the case (that you would route once, switch many) if you configure MLS on the both the switch and router? i.e. it's possible to have a switch trunk it's vlans to an external router, but without MLS, your router would still process *all* packets crossing between VLANS, not just the first packet in each flow. Without configuring MLS, all the switch is going to do is switch the traffic between and end device and the MAC of that device's default gateway (the router). With most of the newer L3 switches (6500s, 3550s, etc), I think that CEF is on by default (therefore you don't need to configure MLS). But even for 5000's and 5500's with RSMs, if you don't configure MLS, the RSM would still process all cross-VLAN packets. See this URL for setting up MLS (watch for wrap):
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_4_5/config/mls.htm Mike W. Ladrach, Daniel E. wrote: > > A layer 3 switch is a switch with an RSM in it so the > functionality would be > the same as a router on a stick. You are still going to route > once switch > many(CAM table). > > Daniel Ladrach > CCNP, CCNA > WorldCom Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62191&t=62166 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
