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Cisco Bug: CSCta55990 - E3 Serial interface on APS disabled controller is in Up/Down state

Last Modified

Jan 12, 2017

Products (1)

  • Cisco 12000 Series Routers

Known Affected Releases


Description (partial)


After reloading APS working/protect channel whichever is enabled, E3 serial interface went in up-down state even though sonet controller is Down(APS disabled channel).


 R1 ------------ ADM ------------ R2
Both working and protect links [Both Jag48, 4XOC12] are in same chassis, R1.
RP/0/0/CPU0:stakate_R1#sh aps gr 23       
APS Group 23
  Protect ch 0 (SONET0_3_0_1): Disabled
    SDH framing, SONET signaling, bidirectional, non-revertive
    Rx K1: 0x00 (No Request - Null)
       K2: 0x05 (bridging Null, 1+1, bidirectional)
    Tx K1: 0x00 (No Request - Null)
       K2: 0x05 (bridging Null, 1+1, bidirectional)
  Working ch 1 (SONET0_2_0_1): Enabled
    SDH framing

One serial interface [E3] with 100 FR PVCs are cofigured on both the routers.
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