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Cisco Bug: CSCvs03839 - UDLD timeout during ISSU / RPFO

Last Modified

Sep 02, 2020

Products (1)

  • Cisco Network Convergence System 560 Series Routers

Known Affected Releases

6.6.3.BASE

Description (partial)

Symptom:
UDLD timeout during ISSU / RPFO. This is seen for UDLD aggressive timers. Following symptoms are seen:

RP/0/RP0/CPU0:Nov  9 20:00:28.355 IST: UDLD[348]: %PKT_INFRA-ERRDIS-6-ERROR_DISABLE : TenGigE0/4/0/6: Error disabling due to reason: udld-timeout

---and---
sh ethernet udld interfaces <int>
 
    Interface TenGigE0/4/0/6
     Port state:            Down
     Main FSM state:        Port shutdown
     Detection FSM state:   Unknown <<<<<<<<<<

Conditions:
-UDLD mode aggressive is configured under interfaces
-ISSU or RPFO
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