An edge port refers to the port that is connected to another NE by fiber. Setting an edge port is to set an optical port of an NE as a connection point between this NE and another NE. You need to configure the edge port before creating a single station optical cross-connection.
to add the port to Selected Edge Ports. If you want to change the selected edge port, select the corresponding port from the Selected Edge Ports, and then click
to add the port to Available Edge Ports.