Cisco ONS 15454 Series - Page 749

21-3
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 21 DLPs A400 to A499
DLP-A416 View Circuit Information
• Status—The circuit status. Table 21-2 lists the circuit statuses that can appear.
Table 21-1 Circuit Protection Types
Protection Type Description
1+1 The circuit is protected by a 1+1 protection group.
2F BLSR The circuit is protected by a two-fiber bidirectional line switched ring (BLSR).
4F BLSR The circuit is protected by a four-fiber BLSR.
2F-PCA The circuit is routed on a protection channel access (PCA) path on a two-fiber
BLSR. PCA circuits are unprotected.
4F-PCA The circuit is routed on a PCA path on a four-fiber BLSR. PCA circuits are
unprotected.
BLSR The circuit is protected by a both a two-fiber and a four-fiber BLSR.
DRI The circuit is protected by a dual-ring interconnect (DRI). This is used for both path
protection and BLSR DRIs.
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 BLSRs. PCA
circuits are unprotected.
Protected The circuit is protected by diverse SONET topologies, for example, a BLSR and a
path protection, or a path protection and 1+1.
Splitter 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.
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 a BLSR or 1+1 protection group.
Path protection The circuit is protected by a path protection.
Y-Cable 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
Status Definition/Activity
CREATING CTC is creating a circuit.
DISCOVERED CTC created a circuit. All components are in place and a complete path exists
from the circuit source to the circuit destination.
DELETING CTC is deleting a circuit.