Cisco 10720 - Internet Router Installation And Configuration Manual page 112

Alarm Messages
Table 4-1
Alarm
SRP1/1 Side A Keepalive
Failure (LSD)
SRP1/1 Side A Keepalive
Failure (LSD)
SRP1/1 Side A Keepalive
OK
RPR-IEEE1/1 span
WEST Keepalive
Failure (MAC)
RPR-IEEE1/1 span
WEST Keepalive Failure
(SLOS)
RPR-IEEE1/1 span
WEST Keepalive
Failure (SLOF)
RPR-IEEE1/1 span
WEST Keepalive
Failure (LSD)
RPR-IEEE1/1 span
WEST Keepalive
Failure (LSF)
RPR-IEEE1/1 span
WEST Keepalive
Failure OK
Cisco 10720 Internet Router Installation and Configuration Guide
4-12
Keepalive Alarm Messages for All Uplink Cards (continued)
Description
SONET line signal degrade
SONET line signal degrade
Keepalive failure removed;
Layer 2 Keepalive receiving
correctly
MAC failure is detected
SONET section loss of signal
SONET section loss of frame
SONET line signal degrade
SONET line signal failure
Keepalive signal removed,
Layer 2 Keepalive receiving
correctly
Chapter 4
Solution
Check the affected fiber, transmit and
receive ports. Check power level.
This is a SONET layer 1 issue with signal
degrade.
Check the neighbor
node/transport/regenerator for SONET
layer 1 issues (LOS, LSF).
This is a SONET layer 1 issue with an
intermediate unit (usually transport
connection or regenerator) forwarding an
AIS.
None.
Check transport span for problems.
Typically RPR ring traverses a SONET
layer connection, creating this error.
Check fiber for breaks, power level, and
connectivity.
This is a SONET Layer 1 issue with fiber.
Check the fiber for degredation in (power
level) or clocking (interval versus line).
Check the affected fiber transmit (TX)
and receive (RX) ports. Check the power
level.
This is a SONET Layer 1 issue with
signal degradation.
Check the neighboring
node/transport/regenerator for SONET
layer 1 issues (LOS, LSF).
This is a SONET Layer 1 issue with an
intermediate unit (usually transport
connection or regenerator) forwarding an
AIS.
None.
Troubleshooting
78-13062-10