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Log Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R005C00

This document provides the explanations, causes, and recommended actions of logs on the product.

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STACKMNG/3/STACK_FASTUPGRADE_ERROR: Fast upgrade failed, and the system software version rolled back. (Reason=[Reason])


Fast upgrade of the stack failed, and the system version automatically rolled back.


Parameter Name Parameter Meaning
Reason Indicates a reason of the fast upgrade failure.

Possible Causes

Cause 1: The upgrade of the standby switch exceeded the predetermined time. (For example, the card registration exceeded the predetermined time, the system version rolled back after the standby switch reset repeatedly.)

Cause 2: The device received unauthorized packets during fast upgrade.


  1. Contact technical support personnel.
Updated: 2019-04-20

Document ID: EDOC1100039602

Views: 178632

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