Table 20-31 Circuit Protection Types - Cisco ONS 15454 SDH Procedure Manual

Chapter 20 DLPs D300 to D399
Type—Circuit types are: HOP (high-order path circuit), LOP (low-order path circuit), VCT (VC
•
low-order tunnel), VCA (VC low-order aggregation point), OCHNC (DWDM optical channel
network connection), HOP_v (VCAT high-order circuit), and LOP_v (VCAT low-order circuit).
Size—Circuit size. High-order circuit sizes are VC4, VC4-2c, VC4-3c, VC4-4c, VC4-8c, VC4-12c,
•
VC4-16c, and VC4-64c. Low-order circuits are VC11, VC12, and VC3. Optical channel network
connection (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
members.
• OCHNC Wlen—(DWDM only) Refer to the Cisco ONS 15454 DWDM Procedure Guide for further
information.
• Direction—The circuit direction, either two-way or one-way.
• OCHNC Dir—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 for further
information.
Protection—The type of circuit protection. See
•
Table 20-31
Protection Type
1+1
2F MS-SPRing
4F MS-SPRing
2F-PCA
4F-PCA
MS-SPRing
N/A
Protected
PCA
SNCP
SNCP-DRI
SPLITTER
Unknown
Unprot (black)
Unprot (red)
Y-Cable
78-17194-01
Circuit Protection Types
Description
The circuit is protected by a 1+1 protection group.
The circuit is protected by a two-fiber MS-SPRing.
The circuit is protected by a four-fiber MS-SPRing.
The circuit is routed on a protection channel access (PCA) path on a two-fiber
MS-SPRing; PCA circuits are unprotected.
The circuit is routed on a PCA path on a four-fiber MS-SPRing; PCA circuits are
unprotected.
The circuit is protected by both a two-fiber and a four-fiber MS-SPRing.
A circuit with connections on the same node is not protected.
The circuit is protected by diverse SDH topologies, for example, an MS-SPRing and
an SNCP, or an SNCP and a 1+1 protection group.
The circuit is routed on a PCA path on both two-fiber and four-fiber MS-SPRings;
PCA circuits are unprotected.
The circuit is protected by an SNCP.
The circuit is protected by an SNCP DRI.
The circuit is protected by the protect transponder (TXPP_MR_2.5G) splitter
protection.
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.
A circuit with a source and destination on different nodes is not protected.
A circuit created as a fully protected circuit is no longer protected due to a system
change, such as removal of a MS-SPRing or 1+1 protection group.
The circuit is protected by a transponder or muxponder card Y-cable protection
group.
DLP- D370 View Circuit Information
Table 20-31 for a list of protection types.
Cisco ONS 15454 SDH Procedure Guide, R7.0
n
is the number of
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