Cisco Logs | Graylog

[zionio (Andrea)]

Maybe this can help:

Is it possible to send Cisco Switch logs to Graylog

you will only need to define a Syslog Input on Graylog and after that configure your devices to send their syslog message to that created input. http://docs.graylog.org/en/2.3/pages/sending_data.html#syslog You might find some of the available content packs and descriptions in the marketplace useful.