The following command will display the station statistics for PPA 4. After the example, a brief description of each field is presented.

example% /usr/lib/llc2/llc2_stats 4 Station values received: ppa = 0x00000004 clearFlag = 0x00 # of saps (hex) = 0x0002 saps (hex) = 02 aa state = 0x01 nullSapXidCmdRcvd = 0x00000000 nullSapXidRspSent = 0x00000000 nullSapTestCmdRcvd = 0x00000000 nullSapTestRspSent = 0x00000000 outOfState = 0x00000000 allocFail = 0x00000000 protocolError = 0x00000000

The fields are described as follows:

ppa

The logical number used to address the adapter.

clearFlag

This flag indicates if the statistics will be reset to zero after reading (set to a 1) or if the statistics are read only (set to 0).

# of saps

The number of SAPs currently bound on this station.

saps

The array of the station's Service Access Point (SAP) logical interface values between the LLC and its adjacent layers.

state

A number indicating the current state of the station component (0 = down, 1 = up).

nullSapXidCmdRcvd

The number of XID command Protocol Data Units (PDUs) received for the NULL SAP address (sap = 0x00).

nullSapXidRspSent

The number of XID response PDUs sent in response to XID command PDUs received for the null SAP address.

nullSapTestCmdRcvd

The number of TEST command PDUs received for the null SAP address.

nullSapTestRspSent

The number of TEST response PDUs sent in response to TEST command PDUs received for the null SAP address.

outOfState

The number of events received in an invalid state.

allocFail

The number of buffer allocation failures.

protocolError

The number of LLC protocol errors, that is, the receipt of malformed PDUs or the receipt of frame X when frame Y was expected.

In the above display, there are two active SAPs, 0x02 and 0xaa. The following is an example of a command for retrieving the statistics for SAP 02 and a brief explanation of each field presented.

example% /usr/lib/llc2/llc2_stats 4 -s 02 Sap values received: ppa = 0x00000004 clearFlag = 0x00 sap = 0x02 state = 0x01 # of cons (hex) = 0x0000000a connections (hex) = 0000 0001 0002 0003 0004 0005 0006 0007 0008 0009 xidCmdSent = 0x00000000 xidCmdRcvd = 0x00000000 xidRspSent = 0x00000000 xidRspRcvd = 0x00000000 testCmdSent = 0x00000000 testCmdRcvd = 0x00000000 testRspSent = 0x00000000 testRspRcvd = 0x00000000 uiSent = 0x00000000 uiRcvd = 0x00000000 outOfState = 0x00000000 allocFail = 0x00000000 protocolError = 0x00000000

The fields are described as follows:

ppa

The logical number used to address the adapter.

clearFlag

This flag indicates if the statistics will be reset to zero after reading (set to a 1) or if the statistics are read only (set to 0).

sap

The specified Service Access Point (SAP) logical interface value for the station.

state

A number indicating the current state of the SAP component (0 = inactive, 1 = active).

# of cons

The number of active connections on this SAP.

connections

The array of active connection indexes.

xidCmdSent

The number of XID command PDUs sent (Source SAP = this sap).

xidCmdRcvd

The number of XID command PDUs received (Destination SAP = this sap).

xidRspSent

The number of XID response PDUs sent (Source SAP = this sap).

xidRspRcvd

The number of XID response PDUs received (Source SAP = this sap).

testCmdSent

The number of TEST command PDUs sent (Source SAP = this sap).

testCmdRcvd

The number of TEST command PDUs received (Destination SAP = this sap).

testRspSent

The number of TEST response PDUs sent (Source SAP = this sap).

testRspRcvd

The number of TEST response PDUs received (Source SAP = this sap).

uiSent

The number of Unnumbered Information Frames sent.

uiRcvd

The number of Unnumbered Information Frames received.

outOfState

The number of events received in an invalid state.

allocFail

The number of buffer allocation failures.

protocolError

The number of LLC protocol errors, that is, the receipt of malformed PDUs or the receipt of frame X when frame Y was expected.

Ten established connections are associated with this SAP. To retrieve the statistics for connection 1, enter the following command:

example% /usr/lib/llc2/llc2_stats 4 -s 2 -c 1 Connection values received: ppa = 0x0004 clearFlag = 0x00 sap = 0x02 con = 0x0001 sid = 0x0201 stateOldest = 0x00 stateOlder = 0x00 stateOld = 0x01 state = 0x08 dl_nodeaddr = 0x0080d84008c2 dl_sap = 0x04 flag = 0x50 dataFlag = 0x00 timerOn = 0x18 vs = 0x29 vr = 0x1e nrRcvd = 0x29 k = 0x14 retryCount = 0x0000 numToBeAcked = 0x0000 numToResend = 0x0000 macOutSave = 0x0000 macOutDump = 0x0000 iSent = 0x0ba9 iRcvd = 0x001e frmrSent = 0x0000 frmrRcvd = 0x0000 rrSent = 0x016a rrRcvd = 0x00c1 rnrSent = 0x0000 rnrRcvd = 0x06fb rejSent = 0x0000 rejRcvd = 0x0000 sabmeSent = 0x0000 sabmeRcvd = 0x0001 uaSent = 0x0001 uaRcvd = 0x0000 discSent = 0x0000 outOfState = 0x0000 allocFail = 0x0000 protocolError = 0x0000 localBusy = 0x0000 remoteBusy = 0x00b5 maxRetryFail = 0x0000 ackTimerExp = 0x0000 pollTimerExp = 0x0000 rejTimerExp = 0x0000 remBusyTimerExp = 0x0000 inactTimerExp = 0x0000 sendAckTimerExp = 0x0000

ppa

The logical number used to address the adapter.

clearFlag

This flag indicates if the statistics will be reset to zero after reading (set to a 1) or if the statistics are read only (set to 0).

sap

The specified Service Access Point (SAP) logical interface value for the station.

con

The specified connection index value for the SAP.

stateOldest

A number representing the state of the connection component prior to stateOlder.

stateOlder

A number representing the state of the connection component prior to stateOld.

stateOld

A number representing the state of the connection component prior to state.

state

A number representing the most current state of the connection component. See Table 1.

sid

The Station Identifier composed of the SAP (upper byte) and connection index (lower byte).

dl_nodeaddr

The Data Link Node Address. This is the destination node's MAC address.

dl_sap

The destination node's SAP.

flag

The connection component processing flag. See Table 3.

dataFlag

A number representing the status of the data units from received I-frame PDUs (0 = not discarded, 1 = discarded, 2 = busy state entered with REJ PDU outstanding).

timerOn

A number representing the timer activity flag, with each bit representing an active timer for this connection. See Table 2 for timer definitions.

vs

The sequence number of the next I-frame PDU to send.

vr

The expected sequence number of the next I-frame PDU to be received.

nrRcvd

The sequence number plus 1 of the last sent I-frame PDU acknowledged by the remote node.

k

The transmit window size.

retryCount

The retryCount is incremented whenever a timer expiration occurs. These timers protect outbound frames.

numToBeAcked

The number of outbound I-frames awaiting acknowledgement.

numToResend

The number of outbound I-frames to be retransmitted.

macOutSave

No longer used.

macOutDump

No longer used.

iSent

The number of I-frames sent.

iRcvd

The number of I-frames received.

frmrSent

The number of Frame Reject PDUs (FRMR) sent.

frmrRcvd

The number of Frame Reject PDUs (FRMR) received.

rrSent

The number of Receiver Ready PDUs (RR) sent.

rrRcvd

The number of Receiver Ready PDUs (RR) received.

rnrSent

The number of Receiver Not Ready PDUs (RNR) sent.

rnrRcvd

The number of Receiver Not Ready PDUs (RNR) received.

rejSent

The number of Reject PDUs (REJ) sent.

rejRcvd

The number of Reject PDUs (REJ) received.

sabmeSent

The number of Set Asynchronous Balanced Mode Extended PDUs (SABME) sent.

sabmeRcvd

The number of Set Asynchronous Balanced Mode Extended PDUs (SABME) received.

uaSent

The number of Unnumbered Acknowledgment PDUs (UA) sent.

uaRcvd

The number of Unnumbered Acknowledgment PDUs (UA) received.

discSent

The number of Disconnect PDUs (DISC) sent.

outOfState

The number of events received in an invalid state.

allocFail

The number of buffer allocation failures.

protocolError

The number of LLC protocol errors, that is, the receipt of malformed PDUs or the receipt of frame X when frame Y was expected.

localBusy

The number of times this component was in local busy state and could not accept I-frames.

remoteBusy

The number of times the remote connection component was busy and could not accept I-frames.

maxRetryFail

The number of failures that occurred because maxRetry was reached.

ackTimerExp

The number of expirations of the Acknowledgement timer.

pollTimerExp

The number of expirations of the Poll timer.

rejTimerExp

The number of expirations of the Reject timer.

remBusyTimerExp

The number of expirations of the Remote Busy timer.

inactTimerExp

The number of expirations of the Inactivity timer.

sendAckTimerExp

The number of expirations of the Send Acknowledgement timer.