An integrated network element includes the functions of multiple Ring add-drop-multiplexers
and a digital cross connect. A user may provision cross connections between input
and output path-level units of bandwidth referred to herein as "logical tributaries."
Each port within the integrated network element may be combined with one or more
other ports to form a user-provisioned association of optical interface ports that
is used for line protection (or SDH multiplex section protection) in a particular
type of network configuration, referred to as a "port protection group". Each port
within a port protection group may have a plurality of logical tributaries associated
with it. By allowing a user to provision cross connections between logical tributaries,
rather than directly between ports, an integrated network element in accordance
with the principles of the present invention permits a user to provision working
and protection paths from any port to any other port in the integrated network
element without requiring the user to know the details, such as switching status,
whether a port associated with a particular port tributary is a member of a port
protection group, what type of port protection group a port tributary is a member
of, the state of protection switching, or other such details. A user interface
allows a user to provision the behavior and report the results of path-level signal
monitoring (for faults and performance) and of path-level protection switching.