Cisco 1721 doesn't show a reload in the log

[Philidor]

Sh ver is showing that yesterday at about noon router was switched off and on and after the reset wan connection restarted to work

 uptime is 20 hours, 52 minutes
System returned to ROM by power-on
System restarted at 11:58:26 NFT Wed Sep 14 2022
System image file is "flash:c1700-sy-mz.122-15.T17.bin"

But show log is only showing a previous reload occurred in the middle of the night

Sep 14 03:24:02.243: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up
Sep 14 03:24:02.856: %SYS-5-CONFIG_I: Configured from memory by console
Sep 14 03:24:05.092: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-SY-M), Version 12.2(15)T17, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Fri 12-Aug-05 23:30 by kehsiao
Sep 14 03:24:05.116: %SNMP-5-COLDSTART: SNMP agent on host is undergoing a cold start
Sep 14 03:24:05.156: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
Sep 14 03:24:06.156: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up
#sh clock
08:52:16.678 NFT Thu Sep 15 2022

[Seb Rupik · Accepted solution]

Hi there,

If the device is being manually power cycled then it will not have a chance to log that event. A restart initiated via the software will have an opportunity to log the event before the restart is initiated.

The output: 'System returned to ROM by power-on' , is your only indication that the device can give you that it was manually power cycled.

cheers,

Seb.