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Observed Memory Fail Error On Both Supervisors of CISCO MDS Switch. ERROR: Memory data bus failed at address 0x20000000 on data line 1 (Doc ID 1916521.1)

Last updated on APRIL 08, 2021

Applies to:

Cisco MDS 9509 Multilayer Director - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.


The Cisco 9509 switch would not power up after an unplanned power outage.


The following messages were observed as the switch tried to powered up:




The switch repeatedly failed to power up. Memory DIMMS on both supervisors had failed preventing the swtch from powering up.


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