the debug output. Diag output normally goes to the telnet
sessions of all Cli users. This is the default behavior.
However, sometimes it is useful to redirect diag output to
other sources. The syslog(4) option redirects output to
syslog. The ring(3) option redirects output to an
internal memory buffer called a 'ring buffer'. The
interface to this memory is designed to never overflow,
but instead start from the beginning once the buffer
fills up. The memory can be accessed using the
'ringDebug' command. The pri(2) option gives priority to
debug printfs. Internally, all processing is stopped
until the debug printf is complete.