The number of congestion events that were 'backed out' of
the congestion control state machine such that the
congestion window was restored to a prior value. This can
happen due to the Eifel algorithm [RFC3522] or other
algorithms that can be used to detect and cancel spurious
invocations of the Fast Retransmit Algorithm.
Although it may be feasible to undo the effects of spurious
invocation of the Fast Retransmit congestion events cannot
easily be backed out of tcpEStatsPerfCongSignals and
tcpEStatsPathPreCongSumCwnd, etc.
Parsed from file rfc4898-TCP-Extended-Statistics.mib.txt
Company: None
Module: TCP-ESTATS-MIB
The number of congestion events that were 'backed out' of
the congestion control state machine such that the
congestion window was restored to a prior value. This can
happen due to the Eifel algorithm [RFC3522] or other
algorithms that can be used to detect and cancel spurious
invocations of the Fast Retransmit Algorithm.
Although it may be feasible to undo the effects of spurious
invocation of the Fast Retransmit congestion events cannot
easily be backed out of tcpEStatsPerfCongSignals and
tcpEStatsPathPreCongSumCwnd, etc.
Parsed from file TCP-ESTATS-MIB.mib
Module: TCP-ESTATS-MIB
Vendor: IETF RFCs
Module: TCP-ESTATS-MIB (rfc4898-TCP-Extended-Statistics.mib)
Type: TABULAR
Access: read-only
Syntax: ZeroBasedCounter32
Automatically extracted from www.mibdepot.com
tcpEStatsStackCongOverCount OBJECT-TYPE SYNTAX ZeroBasedCounter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of congestion events that were 'backed out' of the congestion control state machine such that the congestion window was restored to a prior value. This can happen due to the Eifel algorithm [RFC3522] or other algorithms that can be used to detect and cancel spurious invocations of the Fast Retransmit Algorithm. Although it may be feasible to undo the effects of spurious invocation of the Fast Retransmit congestion events cannot easily be backed out of tcpEStatsPerfCongSignals and tcpEStatsPathPreCongSumCwnd, etc." REFERENCE "RFC 3522, The Eifel Detection Algorithm for TCP" ::= { tcpEStatsStackEntry 26 }
tcpEStatsStackCongOverCount OBJECT-TYPE SYNTAX ZeroBasedCounter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of congestion events that were 'backed out' of the congestion control state machine such that the congestion window was restored to a prior value. This can happen due to the Eifel algorithm [RFC3522] or other algorithms that can be used to detect and cancel spurious invocations of the Fast Retransmit Algorithm. Although it may be feasible to undo the effects of spurious invocation of the Fast Retransmit congestion events cannot easily be backed out of tcpEStatsPerfCongSignals and tcpEStatsPathPreCongSumCwnd, etc." REFERENCE "RFC 3522, The Eifel Detection Algorithm for TCP" ::= { tcpEStatsStackEntry 26 }
Internet Assigned Numbers Authority
| OID | Name | Sub children | Sub Nodes Total | Description |
|---|---|---|---|---|
| 1.3.6.1.2.1.156.1.1.5.1.1 | tcpEStatsStackActiveOpen | 0 | 0 | True(1) if the local connection traversed the SYN-SENT state, else false(2). |
| 1.3.6.1.2.1.156.1.1.5.1.2 | tcpEStatsStackMSSSent | 0 | 0 | The value sent in an MSS option, or zero if none. |
| 1.3.6.1.2.1.156.1.1.5.1.3 | tcpEStatsStackMSSRcvd | 0 | 0 | The value received in an MSS option, or zero if none. |
| 1.3.6.1.2.1.156.1.1.5.1.4 | tcpEStatsStackWinScaleSent | 0 | 0 | The value of the transmitted window scale option if one was sent; otherwise, a value of -1. Note that if both tcpEStatsStackWinSc… |
| 1.3.6.1.2.1.156.1.1.5.1.5 | tcpEStatsStackWinScaleRcvd | 0 | 0 | The value of the received window scale option if one was received; otherwise, a value of -1. Note that if both tcpEStatsStackWinS… |
| 1.3.6.1.2.1.156.1.1.5.1.6 | tcpEStatsStackTimeStamps | 0 | 0 | Enabled(1) if TCP timestamps have been negotiated on, selfDisabled(2) if they are disabled or not implemented on the local host, … |
| 1.3.6.1.2.1.156.1.1.5.1.7 | tcpEStatsStackECN | 0 | 0 | Enabled(1) if Explicit Congestion Notification (ECN) has been negotiated on, selfDisabled(2) if it is disabled or not implemented… |
| 1.3.6.1.2.1.156.1.1.5.1.8 | tcpEStatsStackWillSendSACK | 0 | 0 | Enabled(1) if the local host will send SACK options, selfDisabled(2) if SACK is disabled or not implemented on the local host, or… |
| 1.3.6.1.2.1.156.1.1.5.1.9 | tcpEStatsStackWillUseSACK | 0 | 0 | Enabled(1) if the local host will process SACK options, selfDisabled(2) if SACK is disabled or not implemented on the local host,… |
| 1.3.6.1.2.1.156.1.1.5.1.10 | tcpEStatsStackState | 0 | 0 | An integer value representing the connection state from the TCP State Transition Diagram. The value listen(2) is included only fo… |
| 1.3.6.1.2.1.156.1.1.5.1.11 | tcpEStatsStackNagle | 0 | 0 | True(1) if the Nagle algorithm is being used, else false(2). |
| 1.3.6.1.2.1.156.1.1.5.1.12 | tcpEStatsStackMaxSsCwnd | 0 | 0 | The maximum congestion window used during Slow Start, in octets. |
| 1.3.6.1.2.1.156.1.1.5.1.13 | tcpEStatsStackMaxCaCwnd | 0 | 0 | The maximum congestion window used during Congestion Avoidance, in octets. |
| 1.3.6.1.2.1.156.1.1.5.1.14 | tcpEStatsStackMaxSsthresh | 0 | 0 | The maximum slow start threshold, excluding the initial value. |
| 1.3.6.1.2.1.156.1.1.5.1.15 | tcpEStatsStackMinSsthresh | 0 | 0 | The minimum slow start threshold. |
| 1.3.6.1.2.1.156.1.1.5.1.16 | tcpEStatsStackInRecovery | 0 | 0 | An integer value representing the state of the loss recovery for this connection. tcpESDataContiguous(1) indicates that the remot… |
| 1.3.6.1.2.1.156.1.1.5.1.17 | tcpEStatsStackDupAcksIn | 0 | 0 | The number of duplicate ACKs received. |
| 1.3.6.1.2.1.156.1.1.5.1.18 | tcpEStatsStackSpuriousFrDetected | 0 | 0 | The number of acknowledgments reporting out-of-order segments after the Fast Retransmit algorithm has already retransmitted the s… |
| 1.3.6.1.2.1.156.1.1.5.1.19 | tcpEStatsStackSpuriousRtoDetected | 0 | 0 | The number of acknowledgments reporting segments that have already been retransmitted due to a Retransmission Timeout. |
| 1.3.6.1.2.1.156.1.1.5.1.21 | tcpEStatsStackSoftErrors | 0 | 0 | The number of segments that fail various consistency tests during TCP input processing. Soft errors might cause the segment to b… |
| 1.3.6.1.2.1.156.1.1.5.1.22 | tcpEStatsStackSoftErrorReason | 0 | 0 | This object identifies which consistency test most recently failed during TCP input processing. This object SHOULD be set every … |
| 1.3.6.1.2.1.156.1.1.5.1.23 | tcpEStatsStackSlowStart | 0 | 0 | The number of times the congestion window has been increased by the Slow Start algorithm. |
| 1.3.6.1.2.1.156.1.1.5.1.24 | tcpEStatsStackCongAvoid | 0 | 0 | The number of times the congestion window has been increased by the Congestion Avoidance algorithm. |
| 1.3.6.1.2.1.156.1.1.5.1.25 | tcpEStatsStackOtherReductions | 0 | 0 | The number of congestion window reductions made as a result of anything other than AIMD congestion control algorithms. Examples o… |
| 1.3.6.1.2.1.156.1.1.5.1.27 | tcpEStatsStackFastRetran | 0 | 0 | The number of invocations of the Fast Retransmit algorithm. |
| 1.3.6.1.2.1.156.1.1.5.1.28 | tcpEStatsStackSubsequentTimeouts | 0 | 0 | The number of times the retransmit timeout has expired after the RTO has been doubled. See Section 5.5 of RFC 2988. |
| 1.3.6.1.2.1.156.1.1.5.1.29 | tcpEStatsStackCurTimeoutCount | 0 | 0 | The current number of times the retransmit timeout has expired without receiving an acknowledgment for new data. tcpEStatsStackCu… |
| 1.3.6.1.2.1.156.1.1.5.1.30 | tcpEStatsStackAbruptTimeouts | 0 | 0 | The number of timeouts that occurred without any immediately preceding duplicate acknowledgments or other indications of congesti… |
| 1.3.6.1.2.1.156.1.1.5.1.31 | tcpEStatsStackSACKsRcvd | 0 | 0 | The number of SACK options received. |
| 1.3.6.1.2.1.156.1.1.5.1.32 | tcpEStatsStackSACKBlocksRcvd | 0 | 0 | The number of SACK blocks received (within SACK options). |
| 1.3.6.1.2.1.156.1.1.5.1.33 | tcpEStatsStackSendStall | 0 | 0 | The number of interface stalls or other sender local resource limitations that are treated as congestion signals. |
| 1.3.6.1.2.1.156.1.1.5.1.34 | tcpEStatsStackDSACKDups | 0 | 0 | The number of duplicate segments reported to the local host by D-SACK blocks. |
| 1.3.6.1.2.1.156.1.1.5.1.35 | tcpEStatsStackMaxMSS | 0 | 0 | The maximum MSS, in octets. |
| 1.3.6.1.2.1.156.1.1.5.1.36 | tcpEStatsStackMinMSS | 0 | 0 | The minimum MSS, in octets. |
| 1.3.6.1.2.1.156.1.1.5.1.37 | tcpEStatsStackSndInitial | 0 | 0 | Initial send sequence number. Note that by definition tcpEStatsStackSndInitial never changes for a given connection. |
| 1.3.6.1.2.1.156.1.1.5.1.38 | tcpEStatsStackRecInitial | 0 | 0 | Initial receive sequence number. Note that by definition tcpEStatsStackRecInitial never changes for a given connection. |
| 1.3.6.1.2.1.156.1.1.5.1.39 | tcpEStatsStackCurRetxQueue | 0 | 0 | The current number of octets of data occupying the retransmit queue. |
| 1.3.6.1.2.1.156.1.1.5.1.40 | tcpEStatsStackMaxRetxQueue | 0 | 0 | The maximum number of octets of data occupying the retransmit queue. |
| 1.3.6.1.2.1.156.1.1.5.1.41 | tcpEStatsStackCurReasmQueue | 0 | 0 | The current number of octets of sequence space spanned by the reassembly queue. This is generally the difference between rcv.nxt… |
| 1.3.6.1.2.1.156.1.1.5.1.42 | tcpEStatsStackMaxReasmQueue | 0 | 0 | The maximum value of tcpEStatsStackCurReasmQueue |