I have LMS 2.6 I have new devices and not discover by Ciscoworks. I have the same configuration o other device but those are discovered.where I can troubleshooting for the reason not discovered.
Campus Discovery does not do well with MPLS. The reason is that CDP does not run across the MPLS links. In order to discover campuses connected with MPLS links, you will need to add a seed device in each remote campus (i.e. where CDP is working).
In LMS 3.0.1 and higher, Campus Discovery is replaced by CS Discovery which supports other, non-CDP, discovery methods.