BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic illustrating a system for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 2 is a first flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 3 is a second flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 4 is a third flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 5 is a fourth flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 6 is a fifth flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention;
FIG. 7 is a sixth flowchart of the method for operation and maintenance of network devices in accordance with an embodiment of the present invention.