Per our customer the switch stack has rebooted three times in the past month. The customer does operate in the GUI but advised that they were not logged in when the problem occurs. I notice that the switch shows POWER-ON-RESET after the reboot. Any thoughts?
ADTRAN, Inc. OS version R11.2.0
Mainline Version: ENM.14.50
P4 Changelist: 144527
Built on: Tue Jun 3 16:35:36 CDT 2014
Upgrade key: c03ca9f9a2cc30165d23ec7a38a08240
Boot ROM version R10.3.0.SB
Built on: Tue Aug 7 11:17:49 CDT 2012
Copyright (c) 1999-2014, ADTRAN, Inc.
Platform: NetVanta 1638P, part number 1700569F1
Serial number LBADTN1330AA498
Flash: 134217728 bytes DRAM: 268435456 bytes
638P uptime is 2 days, 19 hours, 38 minutes, 14 seconds
System returned to ROM by Power-On Reset
Current system image file is "NV1638A-R11-2-0.biz"
Primary boot system image file is "NV1638A-R11-2-0.biz"
Backup boot system image file is "NV1638A-R10-10-0.biz"
Primary system configuration file is "startup-config"
I too am interested in the 'System returned to ROM' status. I'm familiar with Warm Start when issuing the reload command, and Hard Reset after loss of power. Not sure about Power-On Reset.
It is generally recommended to run the latest software release from the Extended Maintenance Branch; R11.4.3 as of this post. I believe several important fixes have been provided and it's always a good place to start.