| VariableName | (ALN) | (ALN) | (ALN) | (ALN) | (ALN) | (ALN) | ShortDescr | RenameFrom | RW | ProcType | Table | Scope | PossibleValues | Description | |
| Priority | Condition/ | Min | Max | Kernel Support | Nature | ||||||||||
| Output | |||||||||||||||
| Ignore these instantaneous values until we know what we can do with these | |||||||||||||||
| CurAppRQueue | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current size of application read queue | - | read-only | Gauge32 | 4app | standard | - | The current number of octets of application data that has beenacknowledged by TCP but not yet delivered to the application. | |
| CurAppWQueue | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current size of application write queue | - | read-only | Gauge32 | 4app | standard | - | The current number of octets of application databuffered by TCP, pending first transmission. i.e. to the left of SND.NXT or SndMax. This data will generally be transmitted (and SND.NXT advanced to the left) as soon as there is available congestion window (cwnd) or receiver window (rwin). This is the amount of data readily available for transmission, without scheduling the application. TCP performance may suffer if there is insufficient queued write data. | |
| CurCwnd | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Congestion Window | CurrentCwnd | read-only | Gauge32 | 1perf | standard | - | The current congestion window, in octets. See [RFC2581]. | |
| CurMSS | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Maximum Segment Size | CurrentMSS | read-only | Gauge32 | 1perf | standard | - | The current maximum segment size (MSS), in octets. | |
| CurRTO | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Retransmission Timer | CurrentRTO | read-only | Gauge32 | 1perf | standard | - | The current value of the retransmit timer RTO, inmilliseconds, not scaled by the RTO backoff multiplier. See [RFC2988]. | |
| CurReasmQueue | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current size of reassembly queue | - | read-only | Gauge32 | 3stack | standard | - | The current number of octets of sequence space spanned by thereassembly queue. This is generally the difference between rcv.nxt and the sequence number of the right most edge of the reassembly queue. | |
| CurRetxQueue | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current size of retransmit queue | CurRetranQueue | read-only | Gauge32 | 3stack | standard | - | The current number of octets of data occupying the retransmit queue. | |
| CurRwinRcvd | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Receiver Window | CurrentRwinRcvd | read-only | Gauge32 | 1perf | standard | - | The most recent window advertisement received, in octets. | |
| CurRwinSent | Low | Output | 1 | 2^32-1 | Supported | Discrete | current receiver window out | CurrentRwinSent | read-only | Gauge32 | 1perf | standard | - | The most recent window advertisement sent, in octets. | |
| CurSsthresh | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Slowstart Threshold | CurrentSsthresh | read-only | Gauge32 | 1perf | standard | - | The current slow start threshold in octets. See [RFC2581]. | |
| CurTimeoutCount | Low | Output | 1 | 2^32-1 | Supported | Discrete | Current Repeated Timeout Count | CurrTimeoutCount | read-only | Gauge32 | 3stack | standard | - | The current number of times the retransmit timeout hasexpired without receiving an acknowledgment for new data. CurTimeoutCount is reset to zero when new data is acknowledged. See [RFC2988]. | |
| IpTosIn | Low | Output | 1 | 2^32-1 | Not supported | Discrete | The DSCP field of the incoming segment. | IpDscp | read-only | Integer32 | 2path | standard | - | The value of the IPv4 Type Of Service octet, or the IPv6traffic class octet, carried in the most recently received IP header. See [RFC2474] and [RFC3260]. | |
| IpTosOut | Low | Output | 1 | 2^32-1 | Not supported | Discrete | The DSCP field of the incoming segment. | - | read-only | Integer32 | 2path | standard | - | The value of the IPv4 Type Of Service octet, or the IPv6traffic class octet, carried in the most recently transmitted IP header. See [RFC2474] and [RFC3260]. | |
| IpTtl | Low | Output | 1 | 2^32-1 | Not supported | Discrete | TTL on the incoming segment | - | read-only | Integer32 | 2path | standard | - | The value of the TTL field carried in the most recentlyreceived IP header. This is sometimes useful to detect changing or unstable routes. | |
| RTTVar | Low | Output | 1 | 2^32-1 | Supported | Discrete | RTT variation | - | read-only | Gauge32 | 1perf | standard | - | The round trip time variation, in milliseconds, used incalculation of the RTO. See RTTVAR in [RFC2988]. | |
| RcvNxt | Low | Output | 1 | 2^32-1 | Supported | Discrete | Next sequence number expected on an incoming segment | rcv_nxt | read-only | Counter32 | 1perf | standard | - | The value of RCV.NXT from [RFC793]. The next sequence numberexpected on an incoming segment, and the left or lower edge of the receive window. | |
| SndNxt | Low | Output | 1 | 2^32-1 | Supported | Discrete | Next Sequence Number to be Sent | snd_nxt | read-only | Integer32 | 1perf | standard | - | The value of SND.NXT, the next sequence number to be sent.Note that SndNxt is not a monotonic (and thus not a counter) because TCP sometimes retransmits lost data by pulling SndNxt back to the missing data. | |
| SndUna | Low | Output | 1 | 2^32-1 | Supported | Discrete | Oldest Unacknowledged Sequence Number. | snd_una | read-only | Counter32 | 1perf | standard | - | The value of SND.UNA, the oldest unacknowledged sequence number. | |
| SoftErrorReason | Low | Output | 1 | 8 | Not supported | Discrete | Identifies the consistency test that most recently failed | - | read-only | INTEGER | 3stack | standard | belowDataWindow(1) aboveDataWindow(2) belowAckWindow(3) aboveAckWindow(4) belowTSWindow(5) aboveTSWindow(6) dataCheckSum(7) otherSoftError(8) | This object identities which consistency test most recentlyfailed during tcp input processing. This object should be set every time tcpEStatsStackSoftErrors is incremented. The codes are as follows: | |
| State | Low | Output | 1 | 12 | Supported | Discrete | TCP State | - | read-only | INTEGER | 1perf | standard | wcStateClosed(1) wcStateListen(2) wcStateSynSent(3) wcStateSynReceived(4) wcStateEstablished(5) wcStateFinWait1(6) wcStateFinWait2(7) wcStateCloseWait(8) wcStateLastAck(9) wcStateClosing(10) wcStateTimeWait(11) wcStateDeleteTcb(12) | An integer value representing the connection state from theTCP State Transition Diagram. See [RFC793]. | |