Hello, yes in the end I did This is config i have applied, I elaborated a little bit and find out that:User is needed with valid credentials for this script and that if configure terminal is applied as command log is already being generated therefor...

Wow man @chuckwilson great job. This is really usefull as Cisco decided to place this interface one the box. I have got one more point as chuck wroted down numbers of pins I have tried to google the collors but than I found out that these colors are ...

Hello, it has been a while. Your point was no good because it is fiber channel interface and log sounds exactly like  posted before. but I have achieved my goal by interface flap so the log is generated when it goes down. Also I have to mention that ...

Many thanks Marce but this guide is for IOS/ XE and we are working with NXOS, comands in here are bit different and not all works as it is in guides. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/system_management/configu...

Here it is, exmaple 1 (config)# event manager applet PerrLog (config-applet)# event syslog pattern "Interface fc1/9 is down" (config-applet)# action 1 syslog msg line Log from "Hostname"