Specifications

5-8
Book Title
78-13113-06 B0
Chapter 5 Troubleshooting the Uplink Cards
Troubleshooting the Uplink Cards Installation
RPR-IEEE1/1 span
WEST Keepalive
Failure (LSF)
SONET line signal failure 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.
RPR-IEEE1/1 span
WEST Keepalive
Failure OK
Keepalive signal removed,
Layer 2 Keepalive receiving
correctly
None.
Table 5-7 IEEE 802.17 RPR Wrap Messages
Alarm Description Solution
RPR-IEEE1/1 wrapped on
span East (span WEST
User Request Forced
Switch)
User initiated forced switch on
span WEST on node
User initiated, none.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
User Request Manual
Switch)
User initiated manual switch
on span WEST on node
User initiated, none.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
Self Detect Signal Fail)
SONET Layer 1 signal fail
detected
Investigate Keepalive failure. Wrap
occurred.
Keepalive failure—SLOS, SLOF, LSF,
or LAIS.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
Span Neighbor Signal
Degrade)
SONET Layer 1 signal fail
detected
Investigate Keepalive failure. Wrap
occurred.
Keepalive failure—LSD.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
Self Detect Wait to Restore
[WTR])
Wrap cleared, node initiated;
Wait to Restore (WTR) state
WTR period is 10 to 360 seconds (user
configured), node will unwrap at end of
WTR. None.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
Span Neighbor Forced
Switch)
Neighbor node Forced Switch
initiated by user. Node wrap to
protect failed span
User initiated, none.
RPR-IEEE1/1 wrapped on
span EAST (span WEST
Span Neighbor Manual
Switch)
Neighbor node Manual Switch
initiated by user. Node wrap
User initiated, none.
Table 5-6 Keepalive Alarm Messages for All Uplink Cards (continued)
Alarm Description Solution