4. Implementation of Main Functional Modules
4.1. Topology drawing module
According to the location of father’s node to determine the location in the hierarchy, scan the database to
get the node number and network topology, and compute the position of node icons, then load icon and form
the topological layout. Every five minutes, the page will update the view. The flow chart is shown in fig3.
4.2. Information table module
Information tables mainly include three types: attribute information, error rate information and flow
information. The specific form relates to the specific format of managed object. Therefore, we only present
the basic information, and some specific characteristics need to be implemented in the extended class.
4.3. Resource tree module
Resource tree mainly reflects the managed objects in the form of tree. First, display the top level topology
of the whole, then gradually show the subnet details. The flow chart of resource tree module is shown in fig4.