Circuits
The Circuits tab displays information about network circuits including specific low-order circuits and tunnels, high-order circuits, and virtual concatenated (VCAT) circuits; aggregation points; and dense wavelength division multiplexing (DWDM) optical channel network connections (OCHNCs). Circuit information includes status, state, source and destination node, slot, and port. You can view the Circuits tab in all views. The Scope field expands or decreases the scope of the circuits shown, for example, in card view you can change the scope to node or network to view all node or network circuits.
The name of the circuit. The circuit name can be manually assigned or automatically generated.
Circuit types are HOP (high-order circuit), LOP (low-order circuit), VCT (VC low-order tunnel), VCA (VC low-order aggregation point), OCHNC, HOP_v (high-order VCAT circuit), or LOP_v (low-order VCAT circuit).
Circuit size. Low-order circuits are VC12 and VC3. High-order circuit sizes are VC4, VC4-3c, VC4-4c, VC4-8c, VC4-16c, VC4-64c. OCHNC sizes are Equipped not specific, Multi-rate, 2.5 Gbps No FEC (forward error correction), 2.5 Gbps FEC, 10 Gbps No FEC, and 10 Gbps FEC. High-order VCAT circuits are VC4-nv and VC4-4c-nv and low-order VCAT circuits are VC3-nv, where n is the number of members.
The OCHNC direction, either East to West or West to East. If the direction is West to East, the channel exits from the node through the LINE-TX port of the OSC-CSM or OPT-BST card (typically in Slot 17). If the direction is East to West, the channel exits from the node through the LINE-TX port of OSC-CSM or OPT-BST card (typically in Slot 1).
The type of circuit protection. See Circuit Protection Types for descriptions.
The circuit status. See Circuit Statuses for descriptions.
The circuit source in the format: node/slot/port "port name" virtual container/ tributary unit group/tributary unit group/virtual container. (The port name appears in quotes.) Node and slot always display; port "port name"/virtual container/tributary unit group/tributary unit group/virtual container might display, depending on the source card, circuit type, and whether a name is assigned to the port. If the circuit size is a concatenated size (VC4-2c, VC4-4c, VC4-8c, etc.) VCs used in the circuit are indicated by an ellipsis, for example, VC4-7..9 (VCs 7, 8, and 9) or VC4-10..12 (VC 10, 11, and 12).
The circuit destination in same format (node/slot/port "port name"/virtual container/tributary unit group/tributary unit group/virtual container) as the circuit source.
The number of internode links that constitute the circuit. Right-clicking the column displays a shortcut menu from which you can choose to show or hide circuit span detail.
The circuit state. See Circuit States and Circuit Creation for descriptions.
Displays the Circuit Creation wizard to create a new circuit.
Displays the Edit Circuits dialog box to edit the circuit highlighted in the Circuits table.
Displays the Circuits Filter dialog box to filter the display of circuits on the Circuits tab.
Displays the Search dialog box to search for circuits based on specific search criteria.
In node view, choose Network to display network circuits. In card view, choose Node to display node circuits or Network to display all network circuits.