Circuits
The Circuits tab displays information about Cisco Optical Networking System (ONS) circuits including specific synchronous transport signal (STS) or Virtual Tributary (VT) circuits, virtual concatenated (VCAT) circuits, VT tunnels, VT aggregation points, and dense wavelength division multiplexing (DWDM) optical channel network connections (OCHNCs), optical channel client connections (OCHCCs), and OCH trail circuits. 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.
 
Item
Description
Circuit Name
The name of the circuit. The circuit name can be manually assigned or automatically generated.
Type
Circuit types are STS (STS circuit), VT (VT circuit), VTT (VT tunnel), IPT (IP tunnel), VAP (VT aggregation point), STS-V (STS VCAT circuit), and VT-V (VT VCAT circuit).
For DWDM circuits, circuit types are OCHNC, OCHNC DCN, OCHCC, and OCHTRAIL.
Size
Circuit size depends on the source and destination card/port. VT circuits are VT1.5 and VT2. STS circuit sizes are 1, 3c, 6c, 9c, 12c, 18c, 24c, 36c, 48c, and 192c.
OCHNC, OCHCC, and OCH trail sizes are Equipped not specific, Multi-rate, 2.5 Gbps No FEC, 2.5 Gbps FEC, 10 Gbps No FEC, and 10 Gbps FEC.
OCHNC Wlen
(DWDM circuits only) The OCHNC wavelength.
Dir
The circuit direction, either two-way or one-way.
OCHNC Dir
(DWDM circuits only) The line direction of the OCHNC, OCHCC, or OCH trail, either Side B to Side A or Side A to Side B. If the direction is Side A to Side B, the channel exits from the node through the LINE-TX port of the Side B OSC-CSM, OPT-BST-E, OPT-BST-E, or OPT-AMP-17-C card, named the Side B Side Card by Cisco Transport Planner (typically these cards are hosted in Slot 17). If the direction is Side B to Side A, the channel exits from the node through the LINE-TX port of the Side A OSC-CSM, or OPT-BST, OPT-BST-E, or OPT-AMP-17-C card, named the Side A Side Card by Cisco Transport Planner (typically these cards are hosted in Slot 1).
Protection
The type of circuit protection. See Circuit Protection Types for descriptions.
Status
The circuit status. See Circuit Statuses for descriptions.
Source
The circuit source in the format: node/slot/port “port name”/STS/VT. The port name appears in quotes. Node and slot always appear; port “port name”/STS/VT might appear, depending on the source card, circuit type, and whether a name is assigned to the port. If IEEE 802.17 RPR mode is enabled, the port will appear as pRPR East or pRPR West.
If the circuit size is a concatenated size (3c, 6c, 12c, etc.), STSs used in the circuit are indicated by an ellipsis, for example, “S7..9,” (STSs 7, 8, and 9) or S10..12 (STSs 10, 11, and 12). Note the following:
If the port is on an ONS 15600 ASAP card, the circuit source contains information about the pluggable interface module (PIM) and pluggable port module (PPM), in the format PIM-PPM-port_number.
If the port is on an ONS 15454 MRC-12 card, the port format is PPM-port_number.
If the port is on an ONS 15310-CL or ONS 15310-MA card and the port is not an optical port, the port format is port type-port number, for example, pEC1-1. If the port is a DS-1 port, port number is not shown, for example, pDS1.
Destination
The circuit destination in the same format as the circuit source.
# of VLANs
(ONS 15454 only) The number of VLANs used by an Ethernet circuit.
# of Spans
The number of internode links that constitute the circuit. Right-clicking the column shows a shortcut menu from which you can choose Span Details to show or hide circuit span detail. If Span Details is checked, the column name changes to “Spans.” This column displays all circuit span information. For each node in the span, the span detail shows the node/slot (card type)/port/STS/VT.
State
The circuit state. See Circuit States.
Loopback
Identifies if a port on the circuit is in loopback (LPBK).
Create
Displays the Circuit Creation wizard to create a new circuit.
Edit
Displays the Edit Circuits dialog box to edit the circuit highlighted in the Circuits table.
Delete
Deletes the circuits highlighted in the Circuits table. Do not delete more than 28 circuits at a time.
Filter
Displays the Circuit Filter dialog box to filter the display of circuits on the Circuits tab.
Search
Displays the Search dialog box to search for circuits based on specific search criteria.
Turns the filter on or off. CTC retains that last filter activation setting. For example, if you turn the filter on and then log out, CTC keeps the filter active the next time you log in.
Scope
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.
Help
Displays context-sensitive help.

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