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 AUGUST 27, 2014
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:
INFO: Booting off primary flash.
CPU: MPC7447A v1.1 @ 1411 MHz
DRAM: SPD Checksum ok!
SPD Checksum ok!
-- DIMM1 has 1 banks
-- DIMM2 has 1 banks
ECC Initialization of Bank 0: Done
ECC Initialization of Bank 1: Done
CAS Latency = 2.5 tRP = 3 tRAS = 7 tRCD=3
Total SDRAM memory is 1024 MB
ERROR: Memory data bus failed at address 0x20000000 on data line 1
### ERROR ### Please RESET the board ###
The switch repeatedly failed to power up. Memory DIMMS on both supervisors had failed preventing the swtch from powering up.
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