test> enable
test# config t
test(config)# logging ?
  Hostname or A.B.C.D  IP address of the logging host
  buffered             Set buffered logging parameters
  cns-events           Set CNS Event logging level
  console              Set console logging parameters
  count                Count every log message and timestamp last occurrence
  exception            Limit size of exception flush output
  facility             Facility parameter for syslog messages
  history              Configure syslog history table
  host                 Set syslog server IP address and parameters
  monitor              Set terminal line (monitor) logging parameters
  on                   Enable logging to all enabled destinations
  origin-id            Add origin ID to syslog messages
  rate-limit           Set messages per second limit
  reload               Set reload logging level
  server-arp           Enable sending ARP requests for syslog servers when
                       first configured
  source-interface     Specify interface for source address in logging
                       transactions
  trap                 Set syslog server logging level

test(config)# logging on
test(config)# logging 1.2.3.4
test(config)# logging host ?
  Hostname or A.B.C.D  IP address of the syslog server

test(config)# logging host 2.3.4.5
test(config)# logging trap ?
  <0-7>          Logging severity level
  alerts         Immediate action needed           (severity=1)
  critical       Critical conditions               (severity=2)
  debugging      Debugging messages                (severity=7)
  emergencies    System is unusable                (severity=0)
  errors         Error conditions                  (severity=3)
  informational  Informational messages            (severity=6)
  notifications  Normal but significant conditions (severity=5)
  warnings       Warning conditions                (severity=4)
  

test(config)# logging trap notification
test(config)# logging buffer not
test(config)# logging console not
test(config)# logging buffer ?
  <0-7>              Logging severity level
  <4096-2147483647>  Logging buffer size
  alerts             Immediate action needed           (severity=1)
  critical           Critical conditions               (severity=2)
  debugging          Debugging messages                (severity=7)
  emergencies        System is unusable                (severity=0)
  errors             Error conditions                  (severity=3)
  informational      Informational messages            (severity=6)
  notifications      Normal but significant conditions (severity=5)
  warnings           Warning conditions                (severity=4)
  xml                Enable logging in XML to XML logging buffer
  

test(config)# logging buffer 40000