Настройка FreeBSD
[gX:~] # grep syslog /etc/rc.conf 
syslogd_flags="-a 10.X+1.X+1.0/24:*"

[gX:~] # grep local0 /etc/syslog.conf 
local0.*                                        /var/log/switch.log

[gX:~] # touch /var/log/switch.log

[gX:~] # /etc/rc.d/syslogd restart

[gX:~] # grep switch.log /etc/newsyslog.conf 
/var/log/switch.log                     644  5     100  *     JC

[gX:~] # tail -f /var/log/switch.log
Настройка коммутатора
wg_sw_X#wr t
...
!
logging facility local0
logging 10.X+1.X+1.2
!