Apscdfltk; Clear The Apscdfltk Alarm; Apsc-Imp - Cisco ONS 15600 SDH Troubleshooting Manual

Chapter 2 Alarm Troubleshooting
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
Step 3
for more information or call Cisco TAC (1 800 553-2447).

2.6.4 APSCDFLTK

The APS Default K Byte Received alarm occurs when a bidirectional line switched ring (MS-SPRing)
is not properly configured—for example, when a four-node MS-SPRing has one node configured as a
unidirectional path switched ring (SNCP). When this misconfiguration occurs, a node in an SNCP or 1+1
configuration does not send the two valid K1/K2 APS bytes anticipated by a system configured for
MS-SPRing. One of the bytes sent is considered invalid by the MS-SPRing configuration. The K1/K2
byte is monitored by receiving equipment for link-recovery information.

Clear the APSCDFLTK Alarm

Step 1 Complete the
that each node has a unique node ID number.
Step 2 Repeat
Step 3 If two nodes have the same node ID number, complete the
procedure on page 2-122
Step 4 If the alarm does not clear, verify correct configuration of east port and west port optical fibers. (See the
"E-W-MISMATCH" alarm on page
fibers must connect to west port fibers. The "Install Cards and Fiber-Optic Cable" chapter in the
Cisco ONS 15600 SDH Procedure Guide contains procedures for fibering an MS-SPRing.
If the alarm does not clear and if the network is a four-fiber MS-SPRing, ensure that each protect fiber
Step 5
is connected to another protect fiber and each working fiber is connected to another working fiber. The
software does not report any alarm if a working fiber is incorrectly attached to a protect fiber.
If the alarm does not clear, complete the
Step 6
page
If nodes are not visible, complete the
Step 7
page 2-139
Step 8 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1 800 553-2447).

2.6.5 APSC-IMP

An Improper SDH APS Code alarm indicates three consecutive, identical frames containing:
•
July 2010
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: STMN
"Identify an MS-SPRing Ring ID or Node ID Number" procedure on page 2-122
Step 1 for all nodes in the ring.
to change one node ID number so that each node ID is unique.
2-123.
to ensure that SDH data communication channel (DCC) terminations exist on each node.
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: STMN
Unused code in bits 6 through 8 of byte K2.
"Change an MS-SPRing Node ID Number"
2-48.) West port fibers must connect to east port fibers and east port
"Verify Node Visibility for Other Nodes" procedure on
"2.8.5 Verify or Create Node DCC Terminations" procedure on
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
2.6.4 APSCDFLTK
to verify
2-17