I have successfully installed ciscoworks 2000 LMS include Campus\nmanager 3.1,after that,we meet a problem! what devices we have are all\nCatalyst 2950,3550,4506 Switch. In campus manager 3.1-\-topology\nservice-\-\-layer 2 view,\nwe can't find any device in topology ;but in my discovery log,we can\nsee all device have been found. through reading doc in\n[URL="http://www.cisco.com,we"]www.cisco.com,we[/URL] found that campus manger 3.1 can't support device\nsuch as 2950,3550.what I want to know is\n\n1: is the reason that we can't see the layer 2 topology campus\nmanager version too old??\n\n2: How can i upgrade the version from 3.1 to 3.3,we have login\ncisco.com using\nCCO, but we didn't find any useful pakage,anyone can tell me???\n\n\nThank all!!!!