NAME

     atmstat - show FORE Systems' ATM device driver statistics

SYNOPSIS

     atmstat [ -poad045 ] [ -h hostname | device ] [ interval ]

DESCRIPTION

     The atmstat program displays Physical layer (TAXI, OC3), ATM
     layer,  ATM  Adaptation  Layer  (AAL),  and  device specific
     counters gathered by the ATM device driver.

     The device argument is the ATM device name (typically  fa0).
     Alternatively,  remote information can be collected via SNMP
     by using the -h option with a hostname.  The interval  argu-
     ment  specifies  how  many  seconds  atmstat  should collect
     statistics  before  displaying  them.  If  an  interval   is
     specifed,  only  a  single  layer  should  be selected.  The
     fields of atmstat's display are as follows:

     Output Cells   Number of cells transmitted by the ATM device
                    driver.

     Input Cells    Number of cells received by  the  ATM  device
                    driver.

     Framing        Numbers of cells received with bad framing.

     Hdr-Crc        Number of cells received with bad header CRC.

     VPI-OOR        Number of cells received with  out  of  range
                    VPI.

     VPI-NoC        Number of cells received for  a  disconnected
                    VP.

     VCI-OOR        Number of cells received with  out  of  range
                    VCI.

     VCI-NoC        Number of cells received for  a  disconnected
                    VC.

     Drops          Number of cells dropped due to lack of buffer
                    space or queue overflow.

     Congestn       Number of AAL 5 CS-PDUs dropped due to  cells
                    lost or gained as a result of network conges-
                    tion.

     CS-PDUs        Number of PDU's to (input) or  from  (output)
                    CS-sublayer.

     CSProto        Number of  CS-PDU's  received  with  protocol
                    errors.

     Pay-CRC        Number of cells (AAL 4) or  CS-PDUs  (AAL  5)
                    received with bad payload CRC.

     SARProto       Number of cells received  with  SAR  protocol
                    errors.

     Section BIP-8  Number of  OC3  section  layer  BIP-8  errors
                    detected in STS-3c stream.

     Path BIP-8     Number  of  OC3  path  layer   BIP-8   errors
                    detected in STS-3c stream.

     Line BIP-24    Number  of  OC3  line  layer  BIP-24   errors
                    detected in STS-3c stream.

     Line FEBE      Number of OC3 line layer FEBE errors detected
                    in STS-3c stream.

     Path FEBE      Number of OC3 path layer FEBE errors detected
                    in STS-3c stream.

     Corr HCS       Number of  cells  received  with  correctable
                    HCS.

     Uncorr HCS     Number of cells received  with  uncorrectable
                    HCS.

     Buffer Allocation Failures
                    Number of times a buffer of the required size
                    and  type  was  unavailable on the 200 Series
                    Adapters.   Currently,  Type  1  buffers  are
                    MBUFs  and type 2 buffers are SBUFs.  Size of
                    small and large buffers  is  platform  depen-
                    dent.

     Receive Queue Full
                    Number of cells dropped due to  full  receive
                    queue on 200 Series Adapters.

     Carrier        Indicates that a carrier has been detected on
                    the receive line.

OPTIONS

     -h              Collect statistics from the specified  host-
                    name via SNMP.

     -p              Display physical layer statistics.

     -o              Display OC3 layer error statistics.

     -a              Display ATM layer statistics.

     -d              Display device specific statistics.

      - 0              Display  statistics  about  ``null''   AAL
                    traffic.

     -4              Display statistics about AAL 4 traffic.

     -5              Display statistics about AAL 5 traffic.

SEE ALSO

     netstat(8C)