I think that we need to be careful to understand what this question means. According to the command reference the log-adjacency-changes is enabled by default. So it is not necessary for this command to be specifically entered or to appear in the running config for the messages to be logged.
Here is the relevant section of the command reference:
To configure the router to send a syslog message when an Open Shortest Path First (OSPF) neighbor goes up or down, use the log-adjacency-changes command in router configuration mode. To turn off this function, use the no form of this command.
no log-adjacency-changes [detail]
(Optional) Sends a syslog message for each state change, not just when a neighbor goes up or down.
While you are correct, this is one of those commands that shows up in the config even though it's the default. Therefore, if you don't see it, or haven't explicitly executed it, chances are you will not see those syslog messages.
This could change in a newer IOS (or vary across trains), so it's a good idea to make sure you explicitly add this command if you care to see those messages.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.