Description

Monitors the TCP connection statistics like tcp active opens, tcp passive opens, tcp failure attempts, tcp establish resets and tcp current establishments. Can be applied on devices to check the TCP connection statistics.

Prerequisites

Not Applicable

Metric Parameters

Metric Parameters
ParameterDescription
Frequency
  • Frequency is the interval in which you want to probe and collect metric data from the target device/resource
  • Frequency is defined in minutes (min).
    • Warning ThresholdIf the metric value satisfies the condition defined along with Warning Threshold value, then a notification is sent to the user.
    Critical ThresholdIf the metric value satisfies the condition defined along with Critical Threshold value, then a notification is sent to the user.
    AlertThe alert value can be set to either Yes or No. If it is Yes, then an alert message is sent to the user.

    Metrics

    tcp.active.opens

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.5.0
    ExpressionNULL
    DescriptionThe number of times that TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.[OID: 1.3.6.1.2.1.6.5.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.attempt.fails

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.7.0
    ExpressionNULL
    DescriptionThe number of times that TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times that TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state. [OID: 1.3.6.1.2.1.6.7.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.current.established.conn

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.9.0
    ExpressionNULL
    DescriptionThe number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
    [OID: 1.3.6.1.2.1.6.9.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.established.resets

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.8.0
    ExpressionNULL
    DescriptionThe number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
    [OID: 1.3.6.1.2.1.6.8.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.passive.opens

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.6.0
    ExpressionNULL
    DescriptionThe number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state. [OID: 1.3.6.1.2.1.6.6.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.errors.in

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.14.0
    ExpressionNULL
    DescriptionThe total number of segments received in error (e.g., bad TCP checksums).[OID: 1.3.6.1.2.1.6.14.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    Unitpsec

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.segments.in

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.10.0
    ExpressionNULL
    DescriptionThe total number of segments received, including those received in error. This count includes segments received on currently established connections. [OID: 1.3.6.1.2.1.6.10.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    Unitpsec

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph

    tcp.segments.retrans

    Metric Details
    Applicable forDevice
    SNMP OID1.3.6.1.2.1.6.12.0
    ExpressionNULL
    DescriptionThe delta of segments retransmitted; that is, the delta of TCP segments transmitted containing one or more previously transmitted octets.[OID: 1.3.6.1.2.1.6.12.0]
    CategorySNMP monitors
    Collector TypeGateway
    Monitor NameTCP Statistics
    UnitNone

    Possible Inputs

    Possible Inputs
    MetricInput ValueRange of Values
    Frequency151 – 1440 (mins)
    Filter
    Warning Operator
    Warning Threshold
    Warning Repeat Count
    Critical Operator
    Critical Threshold
    Critical Repeat Count
    AlertNoYes/No
    Graph (Yes/No)YesYes/No

    Note: As Alert is not enabled on the above metric, the fields are left blank.

    Sample Outputs

    No Graph