your still a little off target... Layer 2 interfaces can be access ports or trunks for vlans Layer 2 or Layer 3 switch interfaces dont need to be sub-interfaces.. Layer 3 vlan interfaces(svi) require layer 2 trunk interfaces to interconnect vlans in other switches Layer 3 interfaces only require an ip address and routing support to make them function
Larry Letterman Network Engineer Cisco Systems ----- Original Message ----- From: "Stephen Hoover" To: > Layer 3 switching does not require VLANs, but what is DOES require is a > physical port connection on the common L3 switch for every IP network that > is connected to the L2 switches. (Hosts on the same L2 switch that are > configured to be in 2 different IP networks.) This is not always possible > nor administratively friendly. > > With VLANs, you can create the equivalent of sub interfaces on a single port > on the L3 switch - hence trunking. You cannot trunk multiple IP networks > (without VLANs) on a single port connection the L3 switch, because you > cannot create Ethernet sub-interfaces... > > That's where I was missing it. > > I think it both Vicki and Jens mentioned something about this. > > Of course if I am off-kilter here, someone please slap me about :) Otherwise > I am confident this is where my misunderstanding really occurred. > > Thanks to EVERYONE who responded - you are all a great group of people to > stick it out until this was beat into my thick skull!!! > > Stephen Hoover > Dallas, Texas [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63243&t=63240 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
