Why link up&down messages appear in the NCC event log but they didn't show on my syslog server?

Zyxel_StevenSu

If you're not seeing link-up and link-down messages on your Syslog server, it might be because your Syslog server is set to filter out "debug" level messages. These messages are important for link status. To fix this, check your syslog server settings and make sure it's configured to include "debug" level messages. Once you do this, you should start getting all messages, including link-up and link-down notifications.