eG Monitoring
 

Measures reported by CtxNsQosTest

An administrator can define application and traffic policies. These policies help to enable traffic steering, Quality of Service (QoS), and filtering capabilities for applications.

The QoS profile provides improved service to certain traffic. The goal of QoS is to provide priority including traffic type (Real-time, Interactive, and Bulk classes) and dedicated bandwidth.

Quality of Service is applied using 4 mechanisms.

  • Link Definition: Tells the traffic shaper which WAN link the packet is using. In a site with multiple links, each link has its own bandwidth limits and is managed independently.

  • Application Classifiers: Identifies and determines which protocol or application class traffic belongs to.

  • Service Classes: Maps applications to acceleration decisions, traffic filters, and traffic-shaping policies.

  • Traffic Shaping Policies: Tells the traffic shaper weighted priority and bandwidth limits to assign to which traffic type (application classifier).

Use the CtxNsQosTest test to monitor traffic processed by QOS, so you can be alerted if:

  • QOS fails to transmit/receive IPC messages;

  • QOS data is dropped (because of the absence of connection or because the data was marked to be dropped);

  • Unclassified QOS packets are detected;

Outputs of the test: One set of results for the Citrix ADC VPX/MPX appliance being monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Ipc_msg_sent_from_qos Indicates the number of IPC messages sent from QOS during the last measurement period. Number

 

Ipc_msg_qos_fail_send Indicates the number of IPC messages QOS failed to send during the last measurement period. Number

Ideally, the value of this measure should be 0.

Ipc_msg_qos_recv Indicates the number of IPC messages QOS received during the last measurement period Number

 

Ipc_msg_sent_to_qos Indicates the number of IPC messages sent to QOS during the last measurement period. Number

 

Ipc_msg_fail_to_sent Indicates the number of messages that could not be transmitted to QOS during the last measurement period. Number

 

Ipc_msg_recv_from_qos Indicates the number of messages that were received from QOS during the last measurement period. Number

 

Qos_data_drop Indicates the amount of QoS data that is marked to be dropped during the last measurement period MB

 

Qos_data_sent_not_clas Indicates the amount of QoS data sent that was unclassified during the last measurement period. MB

Ideally, the value of this measure should be very low.

Qos_data_drop_no_conn Indicates the QoS data dropped owing to no connection during the last measurement period MB

Ideally, the value of this measure should be 0.

Pkts_sent_to_qos Indicates the number of packets sent to QoS during the last measurement period. Number

 

Pkts_from_qos_to_sent Indicates the number of packets yet to be transmitted from QoS during the last measurement period. Number

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Pkts_drop_by_qos Indicates the number of packets dropped by QoS during the last measurement period. Number

Ideally, the value of this measure should be 0.

Clas_source_mac_rw Indicates the number of classified source packets with MAC rewritten during the last measurement period. Number

 

Qos_pkts_unclassified Indicates the number of QoS packets unclassified during the last measurement period. Number

 

Qos_pkts_classified Indicates the number of QoS packets classified during the last measurement period. Number

 

Qos_learned_true_mac Indicates the number of packets received during the last measurement period for which QoS stored the source MAC address so that outgoing packets to the same destination can be sent to the same port. Number

 

Qos_input_data Indicates the amount of data that served as QoS input during the last measurement period. MB

 

Qos_output_data Indicates the amount of data that output by QoS during the last measurement period. MB

 

Qos_free_held_list Indicates the number of QoS free held lists during the last measurement period. Number