No alarm in syslog when switch restart

[Coco Liu]

Not sure whether it is normal or not, but when I restart the switch, there is no alarm showing that system is unreachable or restarted.

Only the interface up/down errors.  When I worked with the switches from other vendors, there is critical alarms showing that 'system restarted' , Not sure why Cisco do not showing such kind of alarm.

Nov 1 21:09:01.359: %ILPOWER-5-DETECT: Interface Gi2/0/1: Power Device detected: IEEE PD
Nov 1 21:09:02.349: %ILPOWER-5-POWER_GRANTED: Interface Gi2/0/1: Power granted
Nov 1 21:09:06.716: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to up
Nov 1 21:09:08.724: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to up
Nov 1 21:09:10.239: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to down
Nov 1 21:09:11.247: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to down
Nov 1 21:09:14.039: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/1, changed state to up
Nov 1 21:09:16.051: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/1, changed state to up

Thanks

[Flavio Miranda]

@Coco Liu 

 What is you syslog level? 

[Leo Laohoo]

If this is a Catalyst 9k, post the complete output to the following commands: 

sh log on switch active uptime detail
dir crashinfo:

[Mark Elsen]

 -  For me it's a bit normal  because the alarm should come before and when the switch becomes unavailable ; usually being achieved by network monitoring systems. It is important to have that 'at that stage' because when the switch becomes unavailable; who is to say it will come back ?(so then you would have no alarm neither)
 Perhaps it died because of a hardware problem , or remote power down , or others.
   So in standard practice ; 1) the network monitoring system will then give an alarm , 2) you investigate the alarm 3) when the switch does come back automatically you investigate afterwards if it is operating normally , when it doesn't come back you take further measures according to what is needed

 M.