In the Cisco docs regarding spanning tree and the states, one of the things that happens during all spanning tree states is that the switch: "Receives and responds to network management messages." Does anyone know what this means? For example: the diagram on page 6 of http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_5_5/cnfg_gd/s pantree.pdf Shows PDUs and Network management frames going in and out of a switched port. Thanks. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=14351&t=14351 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]