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Cisco Bug: CSCul02828 - FAST LOOP to NORMAL LOOP Servo state flapped two times

Last Modified

Mar 09, 2014

Products (16)

  • Cisco ASR 901 Series Aggregation Services Routers
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco ME 3600X-24CX-M Switch
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Known Affected Releases

15.4(1)S

Description (partial)

Symptom:
FAST LOOP to NORMAL LOOP  Servo state flapped two times

Conditions:
TS-3K---1pps+10Mhz+Tod—901-Master----calnex(no impairments)-----BC----BC-HC-2-----BC-HC-3----BC-HC-4-----BC-HC-5------BC-HC-6-----BC-HC-7----BC-HC-8


Steps 
All Routers are in Normal state & Phase aligned
Reload BC-HC-5 and BC-HC-6 router
observation:BC-HC-6 router Flapped two times
Oct 24 18:29:48.943: PTP SERVO state changed from FAST LOOP to NORMAL LOOP

Oct 24 18:35:00.943: PTP SERVO state changed from FAST LOOP to NORMAL LOOP
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