VariableName (ALN) (ALN) (ALN) (ALN) (ALN) (ALN) ShortDescr RenameFrom RW ProcType Table Scope PossibleValues Description  
  Priority Condition/ Min Max Kernel Support Nature                  
    Output                          
AbruptTimeouts Low Output 0 2^32-1 Supported Discrete Abrupt Timeouts - read-only ZeroBasedCounter32 3stack standard - The number of timeouts that occurred without any immediatelypreceding duplicate acknowledgments or other indications of congestion. Abrupt Timeouts indicate that the path lost an entire window of data or acknowledgements. 
AckAfterFR Low Output 0 2^32-1 Supported Discrete ACKs following FR, but not due to FR (way ooo) - read-only ZeroBasedCounter32 2path standard - The number of acknowledgments reporting out-of-order segmentsafter the segments have already be retransmitted (For example as detected by the Eiffle algorithm, [RFC3522]). 
CERcvd Med Output 0 2^32-1 Not supported Discrete Received segments with Congestion Experienced bits - read-only ZeroBasedCounter32 2path standard - Received segments with Congestion Experienced bits. See[RFC3168]. 
CongAvoid Med Output 0 2^32-1 Supported Discrete Congestion Avoidance Window Opens - read-only ZeroBasedCounter32 3stack standard - The number of times the congestion window has been increasedby the Congestion Avoidance algorithm. See [RFC2581]. 
CongOverCount Med Output 0 2^32-1 Supported but renamed as CongestionOverCount Discrete Overcounted congestion Signals CongestionOverCount read-only ZeroBasedCounter32 3stack standard - The number of congestion events which were 'backed out' of thecongestion control state machine such that the congestion window was restored to a prior value. This can happen due to the Eiffle algorithm [RFC3522] or other algorithms which can be used to detect and cancel spurious invocations of the Fast Retransmit Algorithm. 
CongSignals Med Output 0 2^32-1 Supported but renamed as CongestionSignals Discrete Total Congestion Signals. Recoveries PreCongCountRTT read-only ZeroBasedCounter32 1perf standard - The number of multiplicative downward congestion windowadjustments due to all forms of congestion signals, including Fast Retransmit, ECN and timeouts. 
DSACKDups Med Output 0 2^32-1 Supported Discrete Duplicate Data DSACK Reports - read-only ZeroBasedCounter32 3stack standard - The number of duplicate segments reported to the localhost by D-SACK blocks. See [RFC2883]. 
DataOctetsIn Med Output 0 2^32-1 Supported but renamed as DataBytesIn Discrete Data Octets In - read-only ZeroBasedCounter32 1perf standard - The number of octets contained in received data segments,including retransmitted data. Note that this does not include TCP headers. 
DataOctetsOut Med Output 0 2^32-1 Supported but renamed as DataBytesOut Discrete Data Octets Out - read-only ZeroBasedCounter32 1perf standard - The number of octets of data contained in transmitted segments,including retransmitted data. Note that this does not include TCP headers. 
DataSegsIn Med Output 0 2^32-1 Supported but renamed as DataPktsIn Discrete Total Data Segments In - read-only ZeroBasedCounter32  1perf standard - The number of segments received containing a positive lengthdata segment. 
DataSegsOut Med Output 0 2^32-1 Supported but renamed as DataPktsOut Discrete Data Segments Out - read-only ZeroBasedCounter32 1perf standard - The number of segments sent containing a positive length datasegment. 
DupAckEpisodes Med Output 0 2^32-1 Not supported Discrete Number of Duplicate Acks Sent when prior Ack was not duplicate - read-only ZeroBasedCounter32 1perf standard - The number of times that a contiguous series of duplicateacknowledgments have been sent. 
DupAcksIn Med Output 0 2^32-1 Supported Discrete Number of Duplicate ACKs Received - read-only ZeroBasedCounter32 1perf standard - The number of duplicate ACKs received.
DupAcksOut Med Output 0 2^32-1 Supported Discrete Number of Duplicate Acks Sent - read-only ZeroBasedCounter32 1perf standard - The number of duplicate ACKs sent.
ECERcvd Med Output 0 2^32-1 Supported Discrete ECE congestions signals - read-only ZeroBasedCounter32 2path standard - The number of congestion signals received via the [RFC3168] ECE bit.
ECNNonceRcvd Med Output 0 2^32-1 Not supported Discrete Number of ECN Nonces received - read-only ZeroBasedCounter32 2path standard - Number of ECN Nonces received. Note that the low bit is thesame as the one bit nonce sum. 
ECNSent Med Output 0 2^32-1 Not supported Discrete Number of times CE bits have set ECN - read-only ZeroBasedCounter32 2path standard - Number of times CE bits have set ECN. See [RFC3168].
ECNsignals Med Output 0 2^32-1 Not supported Discrete All ECN congestion signals - read-only ZeroBasedCounter32 2path standard - The number of congestion signals delivered via all forms ofexplicit congestion notification including the ECE bit and failing the ECN nonce check, etc. 
FastRetran Med Output 0 2^32-1 Supported Discrete Fast Retransmits - read-only ZeroBasedCounter32 3stack standard - The number of invocations of the Fast Retransmit algorithm.See [RFC2581]. 
MaxAppRQueue High Condition 1 65536 Supported Discrete Maximum size of application read queue - read-only Gauge32 4app standard - The maximum number of octets of application data that has beenacknowledged by TCP but not yet delivered to the application. 
MaxAppWQueue High Condition 1 65536 Supported Discrete Maximum size of application write queue - read-only Gauge32 4app standard - The maximum number of octets of application databuffered by TCP, pending first transmission. This is the maximum value of tcpEStatsAppCurAppWQueue. This pair of objects can be used to determine if insufficient queued data is steady state (suggesting insufficient queue space) or transient (suggesting insufficient application performance or excessive CPU load or scheduler latency). 
MaxCaCwnd High Output 1 2^32-1 Supported but renamed as MaxCwnd Discrete Maximum CA Congestion Window - read-only Gauge32 1perf standard - The maximum congestion window used during Congestion Avoidance, in octets.
MaxMSS High Output 1 65496 Supported Discrete Maximum MSS - read-only Gauge32 3stack standard - The maximum MSS, in octets. See [RFC1191].
        (65536 - 40)                    
MaxRTO High Output 1 2^32-1 Supported Discrete Maximum Retransmission Timer - read-only Gauge32 1perf standard - The maximum value of the retransmit timer RTO, inmilliseconds, not scaled by the RTO backoff multiplier. See [RFC2988].
MaxRTT High Output 1 2^32-1 Supported Discrete Maximum RTT - read-only Gauge32 1perf standard - The maximum sampled round trip time, in milliseconds.
MaxReasmQueue High Output 1 2^32-1 Supported Discrete Maximum size of reassembly queue - read-onlyComment: Is an indirect ref OK? Should the compiler generate the full tag?  Gauge32 3stack standard - The maximum value of tcpEStatsStackCurReasmQueue
MaxRetxQueue High Output 1 2^32-1 Supported Discrete Maximum size of retransmit queue MaxRetranQueue read-only Gauge32 3stack standard - The maximum number of octets of data occupying the retransmit queue.
MaxRwinRcvd High Output 1 2^32-1 Supported Discrete Maximum Receiver Window - read-only Gauge32 1perf standard - The maximum window advertisement received, in octets.
MaxRwinSent High Output 1 2^32-1 Supported Discrete maximum receiver window out - read-only Gauge32 1perf standard - The maximum window advertisement sent, in octets.
MaxSsCwnd High Output 1 2^32-1 Not supported Discrete Maximum SS Congestion Window MaxCwnd read-only Gauge32 1perf standard - The maximum congestion window used during Slow Start, in octets.
MaxSsthresh High Output 1 2^32-1 Supported Discrete Maximum Slowstart Threshold - read-only Gauge32 1perf standard - The maximum slow start threshold, excluding the initialvalue. 
MinMSS High Output 1 2^32-1 Supported Discrete Minimum MSS - read-only Gauge32 3stack standard - The minimum MSS, in octets. See [RFC1191].
MinRTO High Output 1 2^32-1 Supported Discrete Minimum Retransmission Timer - read-only Gauge32 1perf standard - The minimum value of the retransmit timer RTO, inmilliseconds, not scaled by the RTO backoff multiplier. See [RFC2988]. 
MinRTT High Output 1 2^32-1 Supported Discrete Minimum RTT - read-only Gauge32 1perf standard - The minimum sampled round trip time, in milliseconds.
MinSsthresh High Output 1 2^32-1 Supported Discrete Minimum Slowstart Threshold - read-only Gauge32 1perf standard - The minimum slow start threshold.
Nagle High Condition 0 1 Supported but renamed as NagleEnabled Discrete Nagle Algorithm Enabled NagleEnabled read-only TruthValue 1perf standard - True(1) if the Nagle algorithm is being used, else false(2).See [RFC896] and [RFC1122]. 
NonRecovDA High Output 0 2^32-1 Supported Discrete Duplicate Acks attributed to Out-of-Order - read-only ZeroBasedCounter32 2path standard - Duplicate acks (or SACKS) that did not trigger a FastRetransmit because ACK advanced prior to the number of duplicate acknowledgements reaching RetranThresh. 
NonRecovDAEpisodes High Output 1 2^32-1 Not Supported Discrete Dup Ack Episodes XXX SndDupAckEpisodes read-only Integer32 2path standard - The number of duplicate acknowledgment episodes thatdid not trigger a Fast Retransmit because ACK advanced prior to the number of duplicate acknowledgements reaching RetranThresh. See [RFC2581]. 
OctetsRetrans High Output 0 2^32-1 Supported but renamed as BytesRetrans Discrete Retransmitted Octets - read-only ZeroBasedCounter32 1perf standard - The number of octets retransmitted.
OtherReductions High Output 0 2^32-1 Supported Discrete Other Congestion Window Reductions - read-only ZeroBasedCounter32 3stack standard - The number of congestion window reductions made as a resultof anything other than AIMD congestion control algorithms. Examples of non-multiplicative window reductions include experimental algorithms such as Vegas [Bra94], and Congestion Window Validation [RFC2861]. 
QuenchRcvd Low Output 0 2^32-1 Supported Discrete ICMP Quench Messages received - read-only ZeroBasedCounter32 2path standard - The number of ICMP quench messages that are treated ascongestion signals. 
RcvWindScale Low Output 0 2^32-1 Supported Discrete Window scale used by the receiver to encode seg.wnd RcvWinScale read-only Integer32 1perf standard - The value of Rcv.Wind.Scale from [RFC1323]. Note thattcpEStatsPerfRcvWindScale is either zero or the same as tcpEStatsStackWinScaleSent. 
RecInitial Low Output 1 2^32-1 Supported but renamed as RecvISS Discrete Initial receive sequence number RecvISS read-only Counter32 3stack standard - Initial receive sequence number. Note that by definitiontcpEStatsStackRecInitial never changes for a given connection. See [RFC793]. 
SACKBlocksRcvd High Output 1 2^32-1 Supported Discrete Number of SACKs blocks Received - read-only ZeroBasedCounter32 3stack standard - The number of SACK blocks received (within SACK options).
SACKokRcvd High Output 1 2^32-1 Not supported Discrete SACKok was seen in SYN or SYN-ACK - read-only TruthValue 3stack standard - True(1) if SACKok option was received, else false(2).See [RFC2018]. 
SACKokSent High Output 1 2^32-1 Not supported Discrete SACKok was sent in SYN or SYN-ACK - read-only TruthValue 3stack standard - True(1) if SACKok option was sent, else false(2).See [RFC2018]. 
SACKsRcvd High Output 1 2^32-1 Supported Discrete Number of SACKs Options Received - read-only ZeroBasedCounter32 3stack standard - The number of SACK options received. See [RFC2018].
SegsIn High Output 1 2^32-1 Supported but renamed as PktsIn Discrete Total Segments In - read-only ZeroBasedCounter32 1perf standard - The total number of segments received.
SegsOut High Output 1 2^32-1 Supported but renamed as PktsOut Discrete Total Segments Out - read-only ZeroBasedCounter32 1perf standard - The total number of segments sent.
SegsRetrans High Output 1 2^32-1 Supported but renamed as PktsRetrans Discrete Segments With Retransmitted Data - read-only ZeroBasedCounter32 1perf standard - The number of segments transmitted containing at least someretransmitted data. 
SendStall High Output 1 2^32-1 Supported Discrete local resource stalls treated as congestion signals - read-only ZeroBasedCounter32 3stack standard - The number of interface stalls or other sender local resourcelimitations that are treated as congestion signals. 
SlowStart High Output 1 2^32-1 Supported Discrete Slow Start Window Opens - read-only ZeroBasedCounter32 3stack standard - The number of times the congestion window has been increasedby the Slow Start algorithm. See [RFC2581]. 
SmoothedRTT Low Output 1 2^32-1 Supported Discrete Smoothed RTT - read-only Gauge32 1perf standard - The smoothed round trip time, in milliseconds, used incalculation of the RTO. See SRTT in [RFC2988]. 
SndInitial Low Output 1 2^32-1 Supported but renamed as SndISS Discrete Initial send sequence number. SndISS read-only Counter32 3stack standard - Initial send sequence number. Note that by definitiontcpEStatsStackSndInitial never changes for a given connection. See [RFC793]. 
SndLimTimeCwnd High Output 1 2^32-1 Supported Discrete Congestion Limited Time - read-only ZeroBasedCounter32 1perf standard - The cumulative time (in milliseconds) spent in the "CongestionLimited" state. See tcpEStatsPerfSndLimTransCwnd. When there is a retransmission timeout, it should be counted in tcpEStatsPerfSndLimTimeCwnd (and not the cumulative time for some other state.) 
SndLimTimeRwin High Output 1 2^32-1 Supported Discrete Receiver Limited Time - read-only ZeroBasedCounter32 1perf standard - The cumulative time (in milliseconds) spent in the "Receiver Limited"state. See tcpEStatsPerfSndLimTransRwin. 
SndLimTimeSnd High Output 1 2^32-1 Supported but renamed as SndLimTimeSnder Discrete Sender Limited Time SndLimTimeSender read-only ZeroBasedCounter32 1perf standard - The cumulative time (in milliseconds) spent in the "Sender Limited"state. See tcpEStatsPerfSndLimTransSnd. 
SndLimTransCwnd Low Output 0 2^32-1 Supported Discrete Congestion Limited Transitions - read-only ZeroBasedCounter32 1perf standard - The number of transitions into the "Congestion Limited" statefrom either the "Receiver Limited" or "Sender Limited" states. This state is entered whenever TCP transmission stops because the sender has reached some limit defined by congestion control (e.g. cwnd) or other algorithms (retransmission timeouts) designed to control network traffic. 
SndLimTransRwin Low Output 0 2^32-1 Supported Discrete Receiver Limited Transitions - read-only ZeroBasedCounter32 1perf standard - The number of transitions into the "Receiver Limited" statefrom either the "Congestion Limited" or "Sender Limited" states. This state is entered whenever TCP transmission stops because the sender has filled the announced receiver window. 
SndLimTransSnd Low Output 0 2^32-1 Supported but renamed as SndLimTransSnder Discrete Sender Limited Transitions SndLimTransSender read-only ZeroBasedCounter32 1perf standard - The number of transitions into the "Sender Limited" state fromeither the "Receiver Limited" or "Congestion Limited" states. This state is entered whenever TCP transmission stops due to some sender limit such as running out of application data or other resources and the Karn algorithm. When TCP stops sending data for any reason which can not be classified as Receiver Limited or Congestion Limited it must be treated as Sender Limited. 
SndMax Low Output 1 2^32-1 Supported Discrete Maximum Value of snd_nxt snd_max read-only Counter32 1perf standard - The farthest forward (right most or largest) SND.NXT value.Note that this will be equal to tcpEStatsPerfSndNxt except when tcpEStatsPerfSndNxt is pulled back during recovery. 
SndWindScale Low Output 1 2^32-1 Supported Discrete Window scale used by the sender to decode snd.wnd SndWinScale read-only Integer32 1perf standard - The value of Snd.Wind.Scale from [RFC1323]. Note thattcpEStatsPerfSndWindScale is either zero or the same as tcpEStatsStackWinScaleRcvd.
SoftErrors Med Output 0 2^32-1 Supported Discrete Soft Errors - read-only ZeroBasedCounter32 3stack standard - The number segments that fail various consistency tests duringTCP input processing. Soft errors might cause the segment to be discard but some do not. Some of these soft errors cause the the generation of a TCP ancknowledgement, others are silently discarded. 
StartTimeStamp Med Output 1 2^32-1 Supported (as two variables: StartTimeSec and StartTimeUsec) Discrete Start Time StartTimeSec StartTime StartTimeUsec read-only Integer32SNMPType: DateAndTime  1perf standard - Time at which this row was created and all ZeroBasedCounters inthe row were initialized to zero. 
SubsequentTimeouts Med Output 0 2^32-1 Supported Discrete Subsequent (repeated) Timeouts - read-only ZeroBasedCounter32 3stack standard - The number of times the retransmit timeout has expired whenthe RTO backoff multiplier is greater than one. See [RFC2988]. 
SumOctetsReordered Med Output 1 2^32-1 Not supported Discrete Sum Octets Reordered - read-only Integer32 2path standard - The sum of the amounts SND.UNA advances on the acknowledgmentwhich ends a dup-ack episode without a retransmission. 
ThruOctetsAcked Med Output 0 2^32-1 Supported but renamed as ThryBytesAcked Discrete Total throughput octets sent ThruOctetsSent read-only ZeroBasedCounter32 1perf standard - The number of octets for which cumulative acknowledgmentshave been received. Note that this will be the sum of changes to tcpEStatsPerfSndUna. 
ThruOctetsReceived Med Output 0 2^32-1 Supported but renamed as ThruBytesReceived Discrete Total throughput octets received - read-only ZeroBasedCounter32 1perf standard - The number of octets for which cumulative acknowledgmentshave been sent. Note that this will be the sum of changes to tcpEStatsPerfRcvNxt. 
TimeStampRcvd Med Output 0 1 Not supported Discrete Timestamp received in SYN or SYN-ACK - read-only TruthValue 3stack standard - True(1) if Timestamp option was received, else false(2).See [RFC1323]. 
TimeStampSent Med Output 0 1 Supported Discrete Timestamp sent in SYN or SYN-ACK - read-only TruthValue 3stack standard - True(1) if Timestamp option was sent, else false(2).See [RFC1323]. 
TimeStamps Med Output 0 1 Supported but renamed as TimeStampsEnabled Discrete Timestamps Enabled TimestampsEnabled read-only TruthValue 1perf standard - True(1) if timestamps have been negotiated on, elsefalse(2). See [RFC1323]. 
Timeouts High Output 0 2^32-1 Supported Discrete Number of Initial Timeouts - read-only. ZeroBasedCounter32 1perf standard - The number of times the retransmit timeout has expired whenthe RTO backoff multiplier is equal to one. See [RFC2988]. 
WinScaleRcvd High Output -1 14 Supported (also available as RcvWinScale) Discrete requested window scale - read-only Integer32 3stack standard# RenameFrom: RecvWinScale  (-1..14)  The value of the received window scale option if one wasreceived; otherwise, a value of -1. See [RFC1323]. 
WinScaleSent High Output -1 14 Supported (also available as SndWinScale) Discrete Requested Window Scale Out - read-only Integer32 3stack standard# RenameFrom: SendWinScale  (-1..14)  The value of the transmitted window scale option if one wassent; otherwise, a value of -1. See [RFC1323]. 
X_RcvRTT Med Output 1 2^32-1 Supported Discrete Receiver RTT estimate - read-only Gauge32 3stack internal - The receiver's RTT estimate, if available. Note that thereis no standard for receiver RTT measurement. 
X_Rcvbuf High Output 1 2^32-1 Supported Discrete Socket rcvbuf size Rcvbuf RcvbufGet read-only Gauge32 - internal - The socket receive buffer size is octets. Note that themeaning of this variable is implementation dependent. In particular, it may or may not include the reassembly queue. 
X_Sndbuf High Condition 1 2^32-1 Supported Discrete Socket sndbuf size Sndbuf SndbufGet read-only Gauge32 - internal - The socket send buffer size is octets. Note that themeaning of this variable is implementation dependent. Particularly, it may or may not include the retransmit queue. 
ZeroRwinSent High Output 1 2^32-1 Not supported Discrete Number of ACKS sent with zero receive windows - read-only Gauge32 1perf standard - The number of acknowledgements sent announcing azero receive window, when the previously announced window was not zero. 
ZeroRwinRcvd Low Output 1 2^32-1 Not supported Discrete Minimum Receiver Window - read-only Gauge32 1perf standard - The number of acknowledgements received announcing azero receive window, when the previously announced window was not zero.