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TCP-ESTATS-MIB

184 objects
Documentation of TCP Extended Performance Instrumentation variables from the Web100 project. [Web100] All of the objects in this MIB MUST have the same persistence properties as the underlying TCP implementation. On a reboot, all zero-based counters MUST be cleared, all dynamically created table rows MUST be deleted, and all read-write objects MUST be restored to their default values. It is assumed that all TCP implementation have some initialization code (if nothing else to set IP addresses) that has the opportunity to adjust tcpEStatsConnTableLatency and other read-write scalars controlling the creation of the various tables, before establishing the first TCP connection. Implementations MAY also choose to make these control scalars persist across reboots. Copyright (C) The IETF Trust (2007). This version of this MIB module is a part of RFC 4898; see the RFC itself for full legal notices.
Imported Objects
HCNUM-TCZeroBasedCounter64
RMON2-MIBZeroBasedCounter32
SNMPv2-CONFMODULE-COMPLIANCE NOTIFICATION-GROUP OBJECT-GROUP
SNMPv2-SMICounter32 Gauge32 Integer32 mib-2 MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE Unsigned32
SNMPv2-TCDateAndTime TEXTUAL-CONVENTION TimeStamp TruthValue
TCP-MIBtcpConnectionEntry tcpListenerEntry
OIDNameAccessStatusDescription
1.3.6.1.2.1.156IdentitytcpEStatsMIBDocumentation of TCP Extended Performance Instrumentation variables from the Web100 project. [Web100] All of the objects in this MIB MUST have the same persist…
1.3.6.1.2.1.156.0NodetcpEStatsNotifications
1.3.6.1.2.1.156.0.1NotificationtcpEStatsEstablishNotificationcurrentThe indicated connection has been accepted (or alternatively entered the established state).
1.3.6.1.2.1.156.0.2NotificationtcpEStatsCloseNotificationcurrentThe indicated connection has left the established state
1.3.6.1.2.1.156.1NodetcpEStatsMIBObjects
1.3.6.1.2.1.156.1.1NodetcpEStats
1.3.6.1.2.1.156.1.1.1TabletcpEStatsListenerTablenot-accessiblecurrentThis table contains information about TCP Listeners, in addition to the information maintained by the tcpListenerTable RFC 4022.
1.3.6.1.2.1.156.1.1.1.1RowtcpEStatsListenerEntrynot-accessiblecurrentEach entry in the table contains information about a specific TCP Listener.
1.3.6.1.2.1.156.1.1.1.1.1ColumntcpEStatsListenerStartTimeread-onlycurrentThe value of sysUpTime at the time this listener was established. If the current state was entered prior to the last re-initialization of the local network man…
1.3.6.1.2.1.156.1.1.1.1.2ColumntcpEStatsListenerSynRcvdread-onlycurrentThe number of SYNs which have been received for this listener. The total number of failed connections for all reasons can be estimated to be tcpEStatsListenerS…
1.3.6.1.2.1.156.1.1.1.1.3ColumntcpEStatsListenerInitialread-onlycurrentThe total number of connections for which the Listener has allocated initial state and placed the connection in the backlog. This may happen in the SYN-RCVD or…
1.3.6.1.2.1.156.1.1.1.1.4ColumntcpEStatsListenerEstablishedread-onlycurrentThe number of connections that have been established to this endpoint (e.g., the number of first ACKs that have been received for this listener).
1.3.6.1.2.1.156.1.1.1.1.5ColumntcpEStatsListenerAcceptedread-onlycurrentThe total number of connections for which the Listener has successfully issued an accept, removing the connection from the backlog.
1.3.6.1.2.1.156.1.1.1.1.6ColumntcpEStatsListenerExceedBacklogread-onlycurrentThe total number of connections dropped from the backlog by this listener due to all reasons. This includes all connections that are allocated initial resource…
1.3.6.1.2.1.156.1.1.1.1.7ColumntcpEStatsListenerHCSynRcvdread-onlycurrentThe number of SYNs that have been received for this listener on systems that can process (or reject) more than 1 million connections per second. See tcpEStatsL…
1.3.6.1.2.1.156.1.1.1.1.8ColumntcpEStatsListenerHCInitialread-onlycurrentThe total number of connections for which the Listener has allocated initial state and placed the connection in the backlog on systems that can process (or rej…
1.3.6.1.2.1.156.1.1.1.1.9ColumntcpEStatsListenerHCEstablishedread-onlycurrentThe number of connections that have been established to this endpoint on systems that can process (or reject) more than 1 million connections per second. See t…
1.3.6.1.2.1.156.1.1.1.1.10ColumntcpEStatsListenerHCAcceptedread-onlycurrentThe total number of connections for which the Listener has successfully issued an accept, removing the connection from the backlog on systems that can process …
1.3.6.1.2.1.156.1.1.1.1.11ColumntcpEStatsListenerHCExceedBacklogread-onlycurrentThe total number of connections dropped from the backlog by this listener due to all reasons on systems that can process (or reject) more than 1 million connec…
1.3.6.1.2.1.156.1.1.1.1.12ColumntcpEStatsListenerCurConnsread-onlycurrentThe current number of connections in the ESTABLISHED state, which have also been accepted. It excludes connections that have been established but not accepted …
1.3.6.1.2.1.156.1.1.1.1.13ColumntcpEStatsListenerMaxBacklogread-onlycurrentThe maximum number of connections allowed in the backlog at one time.
1.3.6.1.2.1.156.1.1.1.1.14ColumntcpEStatsListenerCurBacklogread-onlycurrentThe current number of connections that are in the backlog. This gauge includes connections in ESTABLISHED or SYN-RECEIVED states for which the Listener has not…
1.3.6.1.2.1.156.1.1.1.1.15ColumntcpEStatsListenerCurEstabBacklogread-onlycurrentThe current number of connections in the backlog that are in the ESTABLISHED state, but for which the Listener has not yet issued an accept.
1.3.6.1.2.1.156.1.1.2TabletcpEStatsConnectIdTablenot-accessiblecurrentThis table maps information that uniquely identifies each active TCP connection to the connection ID used by other tables in this MIB Module. It is an extensio…
1.3.6.1.2.1.156.1.1.2.1RowtcpEStatsConnectIdEntrynot-accessiblecurrentEach entry in this table maps a TCP connection 4-tuple to a connection index.
1.3.6.1.2.1.156.1.1.2.1.1ColumntcpEStatsConnectIndexread-onlycurrentA unique integer value assigned to each TCP Connection entry. The RECOMMENDED algorithm is to begin at 1 and increase to some implementation-specific maximum v…
1.3.6.1.2.1.156.1.1.3TabletcpEStatsPerfTablenot-accessiblecurrentThis table contains objects that are useful for measuring TCP performance and first line problem diagnosis. Most objects in this table directly expose some TCP…
1.3.6.1.2.1.156.1.1.3.1RowtcpEStatsPerfEntrynot-accessiblecurrentEach entry in this table has information about the characteristics of each active and recently closed TCP connection.
1.3.6.1.2.1.156.1.1.3.1.1ColumntcpEStatsPerfSegsOutread-onlycurrentThe total number of segments sent.
1.3.6.1.2.1.156.1.1.3.1.2ColumntcpEStatsPerfDataSegsOutread-onlycurrentThe number of segments sent containing a positive length data segment.
1.3.6.1.2.1.156.1.1.3.1.3ColumntcpEStatsPerfDataOctetsOutread-onlycurrentThe number of octets of data contained in transmitted segments, including retransmitted data. Note that this does not include TCP headers.
1.3.6.1.2.1.156.1.1.3.1.4ColumntcpEStatsPerfHCDataOctetsOutread-onlycurrentThe number of octets of data contained in transmitted segments, including retransmitted data, on systems that can transmit more than 10 million bits per second…
1.3.6.1.2.1.156.1.1.3.1.5ColumntcpEStatsPerfSegsRetransread-onlycurrentThe number of segments transmitted containing at least some retransmitted data.
1.3.6.1.2.1.156.1.1.3.1.6ColumntcpEStatsPerfOctetsRetransread-onlycurrentThe number of octets retransmitted.
1.3.6.1.2.1.156.1.1.3.1.7ColumntcpEStatsPerfSegsInread-onlycurrentThe total number of segments received.
1.3.6.1.2.1.156.1.1.3.1.8ColumntcpEStatsPerfDataSegsInread-onlycurrentThe number of segments received containing a positive length data segment.
1.3.6.1.2.1.156.1.1.3.1.9ColumntcpEStatsPerfDataOctetsInread-onlycurrentThe number of octets contained in received data segments, including retransmitted data. Note that this does not include TCP headers.
1.3.6.1.2.1.156.1.1.3.1.10ColumntcpEStatsPerfHCDataOctetsInread-onlycurrentThe number of octets contained in received data segments, including retransmitted data, on systems that can receive more than 10 million bits per second. Note …
1.3.6.1.2.1.156.1.1.3.1.11ColumntcpEStatsPerfElapsedSecsread-onlycurrentThe seconds part of the time elapsed between tcpEStatsPerfStartTimeStamp and the most recent protocol event (segment sent or received).
1.3.6.1.2.1.156.1.1.3.1.12ColumntcpEStatsPerfElapsedMicroSecsread-onlycurrentThe micro-second part of time elapsed between tcpEStatsPerfStartTimeStamp to the most recent protocol event (segment sent or received). This may be updated in …
1.3.6.1.2.1.156.1.1.3.1.13ColumntcpEStatsPerfStartTimeStampread-onlycurrentTime at which this row was created and all ZeroBasedCounters in the row were initialized to zero.
1.3.6.1.2.1.156.1.1.3.1.14ColumntcpEStatsPerfCurMSSread-onlycurrentThe current maximum segment size (MSS), in octets.
1.3.6.1.2.1.156.1.1.3.1.15ColumntcpEStatsPerfPipeSizeread-onlycurrentThe TCP senders current estimate of the number of unacknowledged data octets in the network. While not in recovery (e.g., while the receiver is not reporting m…
1.3.6.1.2.1.156.1.1.3.1.16ColumntcpEStatsPerfMaxPipeSizeread-onlycurrentThe maximum value of tcpEStatsPerfPipeSize, for this connection.
1.3.6.1.2.1.156.1.1.3.1.17ColumntcpEStatsPerfSmoothedRTTread-onlycurrentThe smoothed round trip time used in calculation of the RTO. See SRTT in [RFC2988].
1.3.6.1.2.1.156.1.1.3.1.18ColumntcpEStatsPerfCurRTOread-onlycurrentThe current value of the retransmit timer RTO.
1.3.6.1.2.1.156.1.1.3.1.19ColumntcpEStatsPerfCongSignalsread-onlycurrentThe number of multiplicative downward congestion window adjustments due to all forms of congestion signals, including Fast Retransmit, Explicit Congestion Noti…
1.3.6.1.2.1.156.1.1.3.1.20ColumntcpEStatsPerfCurCwndread-onlycurrentThe current congestion window, in octets.
1.3.6.1.2.1.156.1.1.3.1.21ColumntcpEStatsPerfCurSsthreshread-onlycurrentThe current slow start threshold in octets.
1.3.6.1.2.1.156.1.1.3.1.22ColumntcpEStatsPerfTimeoutsread-onlycurrentThe number of times the retransmit timeout has expired when the RTO backoff multiplier is equal to one.
1.3.6.1.2.1.156.1.1.3.1.23ColumntcpEStatsPerfCurRwinSentread-onlycurrentThe most recent window advertisement sent, in octets.
1.3.6.1.2.1.156.1.1.3.1.24ColumntcpEStatsPerfMaxRwinSentread-onlycurrentThe maximum window advertisement sent, in octets.
1.3.6.1.2.1.156.1.1.3.1.25ColumntcpEStatsPerfZeroRwinSentread-onlycurrentThe number of acknowledgments sent announcing a zero receive window, when the previously announced window was not zero.
1.3.6.1.2.1.156.1.1.3.1.26ColumntcpEStatsPerfCurRwinRcvdread-onlycurrentThe most recent window advertisement received, in octets.
1.3.6.1.2.1.156.1.1.3.1.27ColumntcpEStatsPerfMaxRwinRcvdread-onlycurrentThe maximum window advertisement received, in octets.
1.3.6.1.2.1.156.1.1.3.1.28ColumntcpEStatsPerfZeroRwinRcvdread-onlycurrentThe number of acknowledgments received announcing a zero receive window, when the previously announced window was not zero.
1.3.6.1.2.1.156.1.1.3.1.31ColumntcpEStatsPerfSndLimTransRwinread-onlycurrentThe number of transitions into the 'Receiver Limited' state from either the 'Congestion Limited' or 'Sender Limited' states. This state is entered whenever TCP…
1.3.6.1.2.1.156.1.1.3.1.32ColumntcpEStatsPerfSndLimTransCwndread-onlycurrentThe number of transitions into the 'Congestion Limited' state from either the 'Receiver Limited' or 'Sender Limited' states. This state is entered whenever TCP…
1.3.6.1.2.1.156.1.1.3.1.33ColumntcpEStatsPerfSndLimTransSndread-onlycurrentThe number of transitions into the 'Sender Limited' state from either the 'Receiver Limited' or 'Congestion Limited' states. This state is entered whenever TCP…
1.3.6.1.2.1.156.1.1.3.1.34ColumntcpEStatsPerfSndLimTimeRwinread-onlycurrentThe cumulative time spent in the 'Receiver Limited' state. See tcpEStatsPerfSndLimTransRwin.
1.3.6.1.2.1.156.1.1.3.1.35ColumntcpEStatsPerfSndLimTimeCwndread-onlycurrentThe cumulative time spent in the 'Congestion Limited' state. See tcpEStatsPerfSndLimTransCwnd. When there is a retransmission timeout, it SHOULD be counted in …
1.3.6.1.2.1.156.1.1.3.1.36ColumntcpEStatsPerfSndLimTimeSndread-onlycurrentThe cumulative time spent in the 'Sender Limited' state. See tcpEStatsPerfSndLimTransSnd.
1.3.6.1.2.1.156.1.1.4TabletcpEStatsPathTablenot-accessiblecurrentThis table contains objects that can be used to infer detailed behavior of the Internet path, such as the extent that there is reordering, ECN bits, and if RTT…
1.3.6.1.2.1.156.1.1.4.1RowtcpEStatsPathEntrynot-accessiblecurrentEach entry in this table has information about the characteristics of each active and recently closed TCP connection.
1.3.6.1.2.1.156.1.1.4.1.1ColumntcpEStatsPathRetranThreshread-onlycurrentThe number of duplicate acknowledgments required to trigger Fast Retransmit. Note that although this is constant in traditional Reno TCP implementations, it is…
1.3.6.1.2.1.156.1.1.4.1.2ColumntcpEStatsPathNonRecovDAEpisodesread-onlycurrentThe number of duplicate acknowledgment episodes that did not trigger a Fast Retransmit because ACK advanced prior to the number of duplicate acknowledgments re…
1.3.6.1.2.1.156.1.1.4.1.3ColumntcpEStatsPathSumOctetsReorderedread-onlycurrentThe sum of the amounts SND.UNA advances on the acknowledgment which ends a dup-ack episode without a retransmission. Note the change in tcpEStatsPathSumOctetsR…
1.3.6.1.2.1.156.1.1.4.1.4ColumntcpEStatsPathNonRecovDAread-onlycurrentDuplicate acks (or SACKS) that did not trigger a Fast Retransmit because ACK advanced prior to the number of duplicate acknowledgments reaching RetranThresh. I…
1.3.6.1.2.1.156.1.1.4.1.11ColumntcpEStatsPathSampleRTTread-onlycurrentThe most recent raw round trip time measurement used in calculation of the RTO.
1.3.6.1.2.1.156.1.1.4.1.12ColumntcpEStatsPathRTTVarread-onlycurrentThe round trip time variation used in calculation of the RTO. See RTTVAR in [RFC2988].
1.3.6.1.2.1.156.1.1.4.1.13ColumntcpEStatsPathMaxRTTread-onlycurrentThe maximum sampled round trip time.
1.3.6.1.2.1.156.1.1.4.1.14ColumntcpEStatsPathMinRTTread-onlycurrentThe minimum sampled round trip time.
1.3.6.1.2.1.156.1.1.4.1.15ColumntcpEStatsPathSumRTTread-onlycurrentThe sum of all sampled round trip times. Note that the change in tcpEStatsPathSumRTT divided by the change in tcpEStatsPathCountRTT is the mean RTT, uniformly …
1.3.6.1.2.1.156.1.1.4.1.16ColumntcpEStatsPathHCSumRTTread-onlycurrentThe sum of all sampled round trip times, on all systems that implement multiple concurrent RTT measurements. Note that the change in tcpEStatsPathHCSumRTT divi…
1.3.6.1.2.1.156.1.1.4.1.17ColumntcpEStatsPathCountRTTread-onlycurrentThe number of round trip time samples included in tcpEStatsPathSumRTT and tcpEStatsPathHCSumRTT.
1.3.6.1.2.1.156.1.1.4.1.18ColumntcpEStatsPathMaxRTOread-onlycurrentThe maximum value of the retransmit timer RTO.
1.3.6.1.2.1.156.1.1.4.1.19ColumntcpEStatsPathMinRTOread-onlycurrentThe minimum value of the retransmit timer RTO.
1.3.6.1.2.1.156.1.1.4.1.20ColumntcpEStatsPathIpTtlread-onlycurrentThe value of the TTL field carried in the most recently received IP header. This is sometimes useful to detect changing or unstable routes.
1.3.6.1.2.1.156.1.1.4.1.21ColumntcpEStatsPathIpTosInread-onlycurrentThe value of the IPv4 Type of Service octet, or the IPv6 traffic class octet, carried in the most recently received IP header. This is useful to diagnose inter…
1.3.6.1.2.1.156.1.1.4.1.22ColumntcpEStatsPathIpTosOutread-onlycurrentThe value of the IPv4 Type Of Service octet, or the IPv6 traffic class octet, carried in the most recently transmitted IP header. This is useful to diagnose in…
1.3.6.1.2.1.156.1.1.4.1.23ColumntcpEStatsPathPreCongSumCwndread-onlycurrentThe sum of the values of the congestion window, in octets, captured each time a congestion signal is received. This MUST be updated each time tcpEStatsPerfCong…
1.3.6.1.2.1.156.1.1.4.1.24ColumntcpEStatsPathPreCongSumRTTread-onlycurrentSum of the last sample of the RTT (tcpEStatsPathSampleRTT) prior to the received congestion signals. This MUST be updated each time tcpEStatsPerfCongSignals is…
1.3.6.1.2.1.156.1.1.4.1.25ColumntcpEStatsPathPostCongSumRTTread-onlycurrentSum of the first sample of the RTT (tcpEStatsPathSampleRTT) following each congestion signal. Such that the change in tcpEStatsPathPostCongSumRTT divided by th…
1.3.6.1.2.1.156.1.1.4.1.26ColumntcpEStatsPathPostCongCountRTTread-onlycurrentThe number of RTT samples included in tcpEStatsPathPostCongSumRTT such that the change in tcpEStatsPathPostCongSumRTT divided by the change in tcpEStatsPathPos…
1.3.6.1.2.1.156.1.1.4.1.27ColumntcpEStatsPathECNsignalsread-onlycurrentThe number of congestion signals delivered to the TCP sender via explicit congestion notification (ECN). This is typically the number of segments bearing Echo …
1.3.6.1.2.1.156.1.1.4.1.28ColumntcpEStatsPathDupAckEpisodesread-onlycurrentThe number of Duplicate Acks Sent when prior Ack was not duplicate. This is the number of times that a contiguous series of duplicate acknowledgments have been…
1.3.6.1.2.1.156.1.1.4.1.29ColumntcpEStatsPathRcvRTTread-onlycurrentThe receiver's estimate of the Path RTT. Adaptive receiver window algorithms depend on the receiver to having a good estimate of the path RTT.
1.3.6.1.2.1.156.1.1.4.1.30ColumntcpEStatsPathDupAcksOutread-onlycurrentThe number of duplicate ACKs sent. The ratio of the change in tcpEStatsPathDupAcksOut to the change in tcpEStatsPathDupAckEpisodes is an indication of reorder …
1.3.6.1.2.1.156.1.1.4.1.31ColumntcpEStatsPathCERcvdread-onlycurrentThe number of segments received with IP headers bearing Congestion Experienced (CE) markings.
1.3.6.1.2.1.156.1.1.4.1.32ColumntcpEStatsPathECESentread-onlycurrentNumber of times the Echo Congestion Experienced (ECE) bit in the TCP header has been set (transitioned from 0 to 1), due to a Congestion Experienced (CE) marki…
1.3.6.1.2.1.156.1.1.5TabletcpEStatsStackTablenot-accessiblecurrentThis table contains objects that are most useful for determining how well some of the TCP control algorithms are coping with this particular path. Entries are …
1.3.6.1.2.1.156.1.1.5.1RowtcpEStatsStackEntrynot-accessiblecurrentEach entry in this table has information about the characteristics of each active and recently closed TCP connection.
1.3.6.1.2.1.156.1.1.5.1.1ColumntcpEStatsStackActiveOpenread-onlycurrentTrue(1) if the local connection traversed the SYN-SENT state, else false(2).
1.3.6.1.2.1.156.1.1.5.1.2ColumntcpEStatsStackMSSSentread-onlycurrentThe value sent in an MSS option, or zero if none.
1.3.6.1.2.1.156.1.1.5.1.3ColumntcpEStatsStackMSSRcvdread-onlycurrentThe value received in an MSS option, or zero if none.
1.3.6.1.2.1.156.1.1.5.1.4ColumntcpEStatsStackWinScaleSentread-onlycurrentThe value of the transmitted window scale option if one was sent; otherwise, a value of -1. Note that if both tcpEStatsStackWinScaleSent and tcpEStatsStackWinS…
1.3.6.1.2.1.156.1.1.5.1.5ColumntcpEStatsStackWinScaleRcvdread-onlycurrentThe value of the received window scale option if one was received; otherwise, a value of -1. Note that if both tcpEStatsStackWinScaleSent and tcpEStatsStackWin…
1.3.6.1.2.1.156.1.1.5.1.6ColumntcpEStatsStackTimeStampsread-onlycurrentEnabled(1) if TCP timestamps have been negotiated on, selfDisabled(2) if they are disabled or not implemented on the local host, or peerDisabled(3) if not nego…
1.3.6.1.2.1.156.1.1.5.1.7ColumntcpEStatsStackECNread-onlycurrentEnabled(1) if Explicit Congestion Notification (ECN) has been negotiated on, selfDisabled(2) if it is disabled or not implemented on the local host, or peerDis…
1.3.6.1.2.1.156.1.1.5.1.8ColumntcpEStatsStackWillSendSACKread-onlycurrentEnabled(1) if the local host will send SACK options, selfDisabled(2) if SACK is disabled or not implemented on the local host, or peerDisabled(3) if the remote…
1.3.6.1.2.1.156.1.1.5.1.9ColumntcpEStatsStackWillUseSACKread-onlycurrentEnabled(1) if the local host will process SACK options, selfDisabled(2) if SACK is disabled or not implemented on the local host, or peerDisabled(3) if the rem…
1.3.6.1.2.1.156.1.1.5.1.10ColumntcpEStatsStackStateread-onlycurrentAn integer value representing the connection state from the TCP State Transition Diagram. The value listen(2) is included only for parallelism to the old tcpCo…
1.3.6.1.2.1.156.1.1.5.1.11ColumntcpEStatsStackNagleread-onlycurrentTrue(1) if the Nagle algorithm is being used, else false(2).
1.3.6.1.2.1.156.1.1.5.1.12ColumntcpEStatsStackMaxSsCwndread-onlycurrentThe maximum congestion window used during Slow Start, in octets.
1.3.6.1.2.1.156.1.1.5.1.13ColumntcpEStatsStackMaxCaCwndread-onlycurrentThe maximum congestion window used during Congestion Avoidance, in octets.
1.3.6.1.2.1.156.1.1.5.1.14ColumntcpEStatsStackMaxSsthreshread-onlycurrentThe maximum slow start threshold, excluding the initial value.
1.3.6.1.2.1.156.1.1.5.1.15ColumntcpEStatsStackMinSsthreshread-onlycurrentThe minimum slow start threshold.
1.3.6.1.2.1.156.1.1.5.1.16ColumntcpEStatsStackInRecoveryread-onlycurrentAn integer value representing the state of the loss recovery for this connection. tcpESDataContiguous(1) indicates that the remote receiver is reporting contig…
1.3.6.1.2.1.156.1.1.5.1.17ColumntcpEStatsStackDupAcksInread-onlycurrentThe number of duplicate ACKs received.
1.3.6.1.2.1.156.1.1.5.1.18ColumntcpEStatsStackSpuriousFrDetectedread-onlycurrentThe number of acknowledgments reporting out-of-order segments after the Fast Retransmit algorithm has already retransmitted the segments. (For example as detec…
1.3.6.1.2.1.156.1.1.5.1.19ColumntcpEStatsStackSpuriousRtoDetectedread-onlycurrentThe number of acknowledgments reporting segments that have already been retransmitted due to a Retransmission Timeout.
1.3.6.1.2.1.156.1.1.5.1.21ColumntcpEStatsStackSoftErrorsread-onlycurrentThe number of segments that fail various consistency tests during TCP input processing. Soft errors might cause the segment to be discarded but some do not. So…
1.3.6.1.2.1.156.1.1.5.1.22ColumntcpEStatsStackSoftErrorReasonread-onlycurrentThis object identifies which consistency test most recently failed during TCP input processing. This object SHOULD be set every time tcpEStatsStackSoftErrors i…
1.3.6.1.2.1.156.1.1.5.1.23ColumntcpEStatsStackSlowStartread-onlycurrentThe number of times the congestion window has been increased by the Slow Start algorithm.
1.3.6.1.2.1.156.1.1.5.1.24ColumntcpEStatsStackCongAvoidread-onlycurrentThe number of times the congestion window has been increased by the Congestion Avoidance algorithm.
1.3.6.1.2.1.156.1.1.5.1.25ColumntcpEStatsStackOtherReductionsread-onlycurrentThe number of congestion window reductions made as a result of anything other than AIMD congestion control algorithms. Examples of non-multiplicative window re…
1.3.6.1.2.1.156.1.1.5.1.26ColumntcpEStatsStackCongOverCountread-onlycurrentThe 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. T…
1.3.6.1.2.1.156.1.1.5.1.27ColumntcpEStatsStackFastRetranread-onlycurrentThe number of invocations of the Fast Retransmit algorithm.
1.3.6.1.2.1.156.1.1.5.1.28ColumntcpEStatsStackSubsequentTimeoutsread-onlycurrentThe number of times the retransmit timeout has expired after the RTO has been doubled. See Section 5.5 of RFC 2988.
1.3.6.1.2.1.156.1.1.5.1.29ColumntcpEStatsStackCurTimeoutCountread-onlycurrentThe current number of times the retransmit timeout has expired without receiving an acknowledgment for new data. tcpEStatsStackCurTimeoutCount is reset to zero…
1.3.6.1.2.1.156.1.1.5.1.30ColumntcpEStatsStackAbruptTimeoutsread-onlycurrentThe number of timeouts that occurred without any immediately preceding duplicate acknowledgments or other indications of congestion. Abrupt Timeouts indicate t…
1.3.6.1.2.1.156.1.1.5.1.31ColumntcpEStatsStackSACKsRcvdread-onlycurrentThe number of SACK options received.
1.3.6.1.2.1.156.1.1.5.1.32ColumntcpEStatsStackSACKBlocksRcvdread-onlycurrentThe number of SACK blocks received (within SACK options).
1.3.6.1.2.1.156.1.1.5.1.33ColumntcpEStatsStackSendStallread-onlycurrentThe number of interface stalls or other sender local resource limitations that are treated as congestion signals.
1.3.6.1.2.1.156.1.1.5.1.34ColumntcpEStatsStackDSACKDupsread-onlycurrentThe number of duplicate segments reported to the local host by D-SACK blocks.
1.3.6.1.2.1.156.1.1.5.1.35ColumntcpEStatsStackMaxMSSread-onlycurrentThe maximum MSS, in octets.
1.3.6.1.2.1.156.1.1.5.1.36ColumntcpEStatsStackMinMSSread-onlycurrentThe minimum MSS, in octets.
1.3.6.1.2.1.156.1.1.5.1.37ColumntcpEStatsStackSndInitialread-onlycurrentInitial send sequence number. Note that by definition tcpEStatsStackSndInitial never changes for a given connection.
1.3.6.1.2.1.156.1.1.5.1.38ColumntcpEStatsStackRecInitialread-onlycurrentInitial receive sequence number. Note that by definition tcpEStatsStackRecInitial never changes for a given connection.
1.3.6.1.2.1.156.1.1.5.1.39ColumntcpEStatsStackCurRetxQueueread-onlycurrentThe current number of octets of data occupying the retransmit queue.
1.3.6.1.2.1.156.1.1.5.1.40ColumntcpEStatsStackMaxRetxQueueread-onlycurrentThe maximum number of octets of data occupying the retransmit queue.
1.3.6.1.2.1.156.1.1.5.1.41ColumntcpEStatsStackCurReasmQueueread-onlycurrentThe current number of octets of sequence space spanned by the reassembly queue. This is generally the difference between rcv.nxt and the sequence number of the…
1.3.6.1.2.1.156.1.1.5.1.42ColumntcpEStatsStackMaxReasmQueueread-onlycurrentThe maximum value of tcpEStatsStackCurReasmQueue
1.3.6.1.2.1.156.1.1.6TabletcpEStatsAppTablenot-accessiblecurrentThis table contains objects that are useful for determining if the application using TCP is limiting TCP performance. Entries are retained in this table for th…
1.3.6.1.2.1.156.1.1.6.1RowtcpEStatsAppEntrynot-accessiblecurrentEach entry in this table has information about the characteristics of each active and recently closed TCP connection.
1.3.6.1.2.1.156.1.1.6.1.1ColumntcpEStatsAppSndUnaread-onlycurrentThe value of SND.UNA, the oldest unacknowledged sequence number. Note that SND.UNA is a TCP state variable that is congruent to Counter32 semantics.
1.3.6.1.2.1.156.1.1.6.1.2ColumntcpEStatsAppSndNxtread-onlycurrentThe value of SND.NXT, the next sequence number to be sent. Note that tcpEStatsAppSndNxt is not monotonic (and thus not a counter) because TCP sometimes retrans…
1.3.6.1.2.1.156.1.1.6.1.3ColumntcpEStatsAppSndMaxread-onlycurrentThe farthest forward (right most or largest) SND.NXT value. Note that this will be equal to tcpEStatsAppSndNxt except when tcpEStatsAppSndNxt is pulled back du…
1.3.6.1.2.1.156.1.1.6.1.4ColumntcpEStatsAppThruOctetsAckedread-onlycurrentThe number of octets for which cumulative acknowledgments have been received. Note that this will be the sum of changes to tcpEStatsAppSndUna.
1.3.6.1.2.1.156.1.1.6.1.5ColumntcpEStatsAppHCThruOctetsAckedread-onlycurrentThe number of octets for which cumulative acknowledgments have been received, on systems that can receive more than 10 million bits per second. Note that this …
1.3.6.1.2.1.156.1.1.6.1.6ColumntcpEStatsAppRcvNxtread-onlycurrentThe value of RCV.NXT. The next sequence number expected on an incoming segment, and the left or lower edge of the receive window. Note that RCV.NXT is a TCP st…
1.3.6.1.2.1.156.1.1.6.1.7ColumntcpEStatsAppThruOctetsReceivedread-onlycurrentThe number of octets for which cumulative acknowledgments have been sent. Note that this will be the sum of changes to tcpEStatsAppRcvNxt.
1.3.6.1.2.1.156.1.1.6.1.8ColumntcpEStatsAppHCThruOctetsReceivedread-onlycurrentThe number of octets for which cumulative acknowledgments have been sent, on systems that can transmit more than 10 million bits per second. Note that this wil…
1.3.6.1.2.1.156.1.1.6.1.11ColumntcpEStatsAppCurAppWQueueread-onlycurrentThe current number of octets of application data buffered by TCP, pending first transmission, i.e., to the left of SND.NXT or SndMax. This data will generally …
1.3.6.1.2.1.156.1.1.6.1.12ColumntcpEStatsAppMaxAppWQueueread-onlycurrentThe maximum number of octets of application data buffered by TCP, pending first transmission. This is the maximum value of tcpEStatsAppCurAppWQueue. This pair …
1.3.6.1.2.1.156.1.1.6.1.13ColumntcpEStatsAppCurAppRQueueread-onlycurrentThe current number of octets of application data that has been acknowledged by TCP but not yet delivered to the application.
1.3.6.1.2.1.156.1.1.6.1.14ColumntcpEStatsAppMaxAppRQueueread-onlycurrentThe maximum number of octets of application data that has been acknowledged by TCP but not yet delivered to the application.
1.3.6.1.2.1.156.1.1.7TabletcpEStatsTuneTablenot-accessiblecurrentThis table contains per-connection controls that can be used to work around a number of common problems that plague TCP over some paths. All can be characteriz…
1.3.6.1.2.1.156.1.1.7.1RowtcpEStatsTuneEntrynot-accessiblecurrentEach entry in this table is a control that can be used to place limits on each active TCP connection.
1.3.6.1.2.1.156.1.1.7.1.1ColumntcpEStatsTuneLimCwndread-writecurrentA control to set the maximum congestion window that may be used, in octets.
1.3.6.1.2.1.156.1.1.7.1.2ColumntcpEStatsTuneLimSsthreshread-writecurrentA control to limit the maximum queue space (in octets) that this TCP connection is likely to occupy during slowstart. It can be implemented with the algorithm …
1.3.6.1.2.1.156.1.1.7.1.3ColumntcpEStatsTuneLimRwinread-writecurrentA control to set the maximum window advertisement that may be sent, in octets.
1.3.6.1.2.1.156.1.1.7.1.4ColumntcpEStatsTuneLimMSSread-writecurrentA control to limit the maximum segment size in octets, that this TCP connection can use.
1.3.6.1.2.1.156.1.2NodetcpEStatsControl
1.3.6.1.2.1.156.1.2.1ScalartcpEStatsControlPathread-writecurrentControls the activation of the TCP Path Statistics table. A value 'true' indicates that the TCP Path Statistics table is active, while 'false' indicates that t…
1.3.6.1.2.1.156.1.2.2ScalartcpEStatsControlStackread-writecurrentControls the activation of the TCP Stack Statistics table. A value 'true' indicates that the TCP Stack Statistics table is active, while 'false' indicates that…
1.3.6.1.2.1.156.1.2.3ScalartcpEStatsControlAppread-writecurrentControls the activation of the TCP Application Statistics table. A value 'true' indicates that the TCP Application Statistics table is active, while 'false' in…
1.3.6.1.2.1.156.1.2.4ScalartcpEStatsControlTuneread-writecurrentControls the activation of the TCP Tuning table. A value 'true' indicates that the TCP Tuning table is active, while 'false' indicates that the table is inacti…
1.3.6.1.2.1.156.1.2.5ScalartcpEStatsControlNotifyread-writecurrentControls the generation of all notifications defined in this MIB. A value 'true' indicates that the notifications are active, while 'false' indicates that the …
1.3.6.1.2.1.156.1.2.6ScalartcpEStatsConnTableLatencyread-writecurrentSpecifies the number of seconds that the entity will retain entries in the TCP connection tables, after the connection first enters the closed state. The entit…
1.3.6.1.2.1.156.1.3NodetcpEStatsScalar
1.3.6.1.2.1.156.1.3.3ScalartcpEStatsListenerTableLastChangeread-onlycurrentThe value of sysUpTime at the time of the last creation or deletion of an entry in the tcpListenerTable. If the number of entries has been unchanged since the …
1.3.6.1.2.1.156.2NodetcpEStatsConformance
1.3.6.1.2.1.156.2.1NodetcpEStatsCompliances
1.3.6.1.2.1.156.2.1.1CompliancetcpEStatsCompliancecurrentCompliance statement for all systems that implement TCP extended statistics.
1.3.6.1.2.1.156.2.2NodetcpEStatsGroups
1.3.6.1.2.1.156.2.2.1GrouptcpEStatsListenerGroupcurrentThe tcpEStatsListener group includes objects that provide valuable statistics and debugging information for TCP Listeners.
1.3.6.1.2.1.156.2.2.2GrouptcpEStatsListenerHCGroupcurrentThe tcpEStatsListenerHC group includes 64-bit counters in tcpEStatsListenerTable.
1.3.6.1.2.1.156.2.2.3GrouptcpEStatsConnectIdGroupcurrentThe tcpEStatsConnectId group includes objects that identify TCP connections and control how long TCP connection entries are retained in the tables.
1.3.6.1.2.1.156.2.2.4GrouptcpEStatsPerfGroupcurrentThe tcpEStatsPerf group includes those objects that provide basic performance data for a TCP connection.
1.3.6.1.2.1.156.2.2.5GrouptcpEStatsPerfOptionalGroupcurrentThe tcpEStatsPerf group includes those objects that provide basic performance data for a TCP connection.
1.3.6.1.2.1.156.2.2.6GrouptcpEStatsPerfHCGroupcurrentThe tcpEStatsPerfHC group includes 64-bit counters in the tcpEStatsPerfTable.
1.3.6.1.2.1.156.2.2.7GrouptcpEStatsPathGroupcurrentThe tcpEStatsPath group includes objects that control the creation of the tcpEStatsPathTable, and provide information about the path for each TCP connection.
1.3.6.1.2.1.156.2.2.8GrouptcpEStatsPathOptionalGroupcurrentThe tcpEStatsPath group includes objects that provide additional information about the path for each TCP connection.
1.3.6.1.2.1.156.2.2.9GrouptcpEStatsPathHCGroupcurrentThe tcpEStatsPathHC group includes 64-bit counters in the tcpEStatsPathTable.
1.3.6.1.2.1.156.2.2.10GrouptcpEStatsStackGroupcurrentThe tcpEStatsConnState group includes objects that control the creation of the tcpEStatsStackTable, and provide information about the operation of algorithms u…
1.3.6.1.2.1.156.2.2.11GrouptcpEStatsStackOptionalGroupcurrentThe tcpEStatsConnState group includes objects that provide additional information about the operation of algorithms used within TCP.
1.3.6.1.2.1.156.2.2.12GrouptcpEStatsAppGroupcurrentThe tcpEStatsConnState group includes objects that control the creation of the tcpEStatsAppTable, and provide information about the operation of algorithms use…
1.3.6.1.2.1.156.2.2.13GrouptcpEStatsAppHCGroupcurrentThe tcpEStatsStackHC group includes 64-bit counters in the tcpEStatsStackTable.
1.3.6.1.2.1.156.2.2.14GrouptcpEStatsAppOptionalGroupcurrentThe tcpEStatsConnState group includes objects that provide additional information about how applications are interacting with each TCP connection.
1.3.6.1.2.1.156.2.2.15GrouptcpEStatsTuneOptionalGroupcurrentThe tcpEStatsConnState group includes objects that control the creation of the tcpEStatsConnectionTable, which can be used to set tuning parameters for each TC…
1.3.6.1.2.1.156.2.2.16GrouptcpEStatsNotificationsGroupcurrentNotifications sent by a TCP extended statistics agent.
1.3.6.1.2.1.156.2.2.17GrouptcpEStatsNotificationsCtlGroupcurrentThe tcpEStatsNotificationsCtl group includes the object that controls the creation of the events in the tcpEStatsNotificationsGroup.
Type Definitions
NameSyntaxStatusDescription
TcpEStatsNegotiatedINTEGER { enabled(1), selfDisabled(2), peerDisabled(3) }currentIndicates if some optional TCP feature was negotiated. Enabled(1) indicates that the feature was successfully negotiated on, which generally requires both hosts to agree to use the feature. selfDisabled(2) indicates tha…