If you want to view a server outside the local subnet, see Viewing an iCDB Server Outside the Local Subnet.
The Server Manager finds these running iCDB Servers by listening for traffic on ports 10000-10100 which is the default port range of the iCDB Servers. If you experience slow performance in a Windows OS environment, you might find some performance improvement by having your anti-virus software ignore these ports. Also, you can change the range of ports that iCDB Servers use with the PortRange keyword in the server.cfg file. See Server.cfg Configuration File.
Your Mentor Graphics customer support representative is unable to provide specific information for configuring your network security or anti-virus software. Contact your internal IT organization for assistance.
The iCDB Servers do not start until either you open the project or until you explicitly start the iCDB Server with the Server Manager (see Starting an iCDB Server).