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Error Message 'MAC Loopback Error' After Spontaneous Reboot

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TitleError Message 'MAC Loopback Error' After Spontaneous Reboot
Symptoms

User may notice the below error messages after spontaneous reboot of the device:

Test 207 XGS SWITCH Registers -
Read Write unit 3 Register error
Read Write unit 3 Register error
Read Write unit 4 Register error
Read Write unit 4 Register error - FAILED
XGS BCM5690 Unit 4 Read Write Register ERROR
Test 104 FANs - FAILED
FAN Fan Register Bad (Code=0) Ofs=0x4 Sb=0001 Is=0000
MAC loopback ERROR !!! recv too much garbage
MAC loopback ERROR Can't recv pkt!!! Port 1 PKT size = 64

Test 212 Internal Loopback - HDR[CPU=1 COS=7 EBIT=1
ECODE=3 L=127 SRC=63 DST=63 OP=63=UNKNOWN_OPCODE]
DW[ 0]=0xffffffff DW[ 1]=0xffffffff DW[ 2]=0xffffffff

ERROR: Assertion failed: (!(ctrl & DC_ABORT_DMA(channel))) at dma.c:162
Unit 4 system_init: Device reset failed: Operation failedly

 
Environment
ERS 5530 running any supported software 
Cause

Issue is due to hardware defect

Resolution

Replace failed device

Additional notes

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