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Cisco ONS 15600 SDH Procedure Guide, R8.0
October 2007
Chapter18 DLPs F300 to F399
DLP- F348 View Circuit Information
Note In node or card view, you can change the scope of the circuits that are displayed by choosing
Card (in card view), Node, or Network from the Scope drop-down list in the bottom right
corner of the Circuits window.
Step2 Click the Circuits tab. The Circuits tab has the following information:
•Name—Name of the circuit. The circuit name can be manually assigned or automatically generated.
•Type—For the ONS15600 SDH, the circuit type is STS (STS circuit).
•Size—VT circuit size is 1.5. STS circuit sizes can be 1, 3c, 6c, 9c, 12c, 24c, 48c, or 192c.
•OCHNC Wlen—(ONS 15454 dense wavelength division multiplexing [DWDM] only) For
OCHNCs, the wavelength provisioned for the optical channel network connection. Refer to the
Cisco ONS 15454 DWDM Procedure Guide.
•Direction—The circuit direction, either two-way or one-way.
•OCHNC Dir—(ONS 15454 DWDM only) For OCHNCs, the direction of the optical channel
network connection, either East to West or West to East. Refer to the Cisco ONS 15454 DWDM
Procedure Guide.
•Protection—The protection type; see Table18-2.
•Status—The circuit status. Table 1 8-3 lists the circuit statuses that can appear.
Table18-2 Circuit Protection Types
Protection Type Description
1+1 The circuit is protected by a 1+1 protection group.
2F MS-SPRing The circuit is protected by a 2-fiber MS-SPRing.
2F-PCA The circuit is routed on a protection channel access (PCA) path on a two-fiber
MS-SPRing. PCA circuits are unprotected.
DRI The circuit is protected by dual-ring interconnect (DRI).
N/A A circuit with connections on the same node is not protected.
PCA The circuit is routed on a PCA path on both two-fiber and four-fiber MS-SPRings.
PCA circuits are unprotected.
Protected The circuit is protected by diverse SDH topologies, for example an MS-SPRing and
an SNCP, or an SNCP and 1+1.
Unknown A circuit has a source and destination on different nodes and communication is
down between the nodes. This protection type appears if not all circuit components
are known.
Unprot (black) A circuit with a source and destination on different nodes is not protected.
Unprot (red) A circuit created as a fully protected circuit is no longer protected due to a system
change, such as removal of an MS-SPRing or 1+1 protection group.
SNCP The circuit is protected by an SNCP.