Cisco ONS 15454 Series Procedure Manual page 749

Chapter 21 DLPs A400 to A499
Table 21-1
Protection Type
1+1
2F BLSR
4F BLSR
2F-PCA
4F-PCA
BLSR
DRI
N/A
PCA
Protected
Splitter
Unknown
Unprot (black)
Unprot (red)
Path protection
Y-Cable
Status—The circuit status.
•
Table 21-2
Status
CREATING
DISCOVERED
DELETING
March 2005
Circuit Protection Types
Description
The circuit is protected by a 1+1 protection group.
The circuit is protected by a two-fiber bidirectional line switched ring (BLSR).
The circuit is protected by a four-fiber BLSR.
The circuit is routed on a protection channel access (PCA) path on a two-fiber
BLSR. PCA circuits are unprotected.
The circuit is routed on a PCA path on a four-fiber BLSR. PCA circuits are
unprotected.
The circuit is protected by a both a two-fiber and a four-fiber BLSR.
The circuit is protected by a dual-ring interconnect (DRI). This is used for both path
protection and BLSR DRIs.
A circuit with connections on the same node is not protected.
The circuit is routed on a PCA path on both two-fiber and four-fiber BLSRs. PCA
circuits are unprotected.
The circuit is protected by diverse SONET topologies, for example, a BLSR and a
path protection, or a path protection and 1+1.
The circuit is protected by the protect transponder (TXPP_MR_2.5G) splitter
protection. Refer to the Cisco ONS 15454 DWDM Installation and Operations
Guide.
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 BLSR or 1+1 protection group.
The circuit is protected by a path protection.
The circuit is protected by a transponder or muxponder card Y-cable protection
group. Refer to the Cisco ONS 15454 DWDM Installation and Operations Guide.
Table 21-2
Cisco ONS 15454 Circuit Status
Definition/Activity
CTC is creating a circuit.
CTC created a circuit. All components are in place and a complete path exists
from the circuit source to the circuit destination.
CTC is deleting a circuit.
lists the circuit statuses that can appear.
Cisco ONS 15454 Procedure Guide, R5.0
DLP-A416 View Circuit Information
21-3