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Cisco Bug: CSCsz58095 - Traffic dropped due to APS status mismatch between ADM and GSR

Last Modified

Jan 30, 2014

Products (1)

  • Cisco 12000 Series Routers

Known Affected Releases

12.0(33)S2 12.0(32)S11o

Description (partial)


Say we have a MR-APS Undirectional setup with GSR connected to ADM, 
 GSR will have Protect as Active while ADM will have Working as Active.
All the traffic will be dropped. No traffic will flow through the APS setup.


Protect link as Active and Working Link remains Inactive due to a LOS alarm.
If a SD is momentarily asserted on Protect and cleared later (a noisy link),
we will find GSR having Protect as Active while ADM is having Working as Active.
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