eG Monitoring
 

Measures reported by A10VserverPortTest

The client requests are received through the ports of the Virtual servers. If the port is down or if the port is handling too much of traffic, then the client requests may have to wait until the time the port can handle the requests. This time lag may gradually affect the load balancing capability of the A10 Application Delivery Controller. To keep check on how well the ports are handling the client requests, you may want to perform the A10VserverPortTest test.

For each virtual server port, this test monitors the current state of the port and reveals how well the port is processing the client requests. This way, administrators may be alerted to the discrepancies in the port and remedial measures can be taken proactively without compromising on the load balancing capability of the A10 Application Delivery Controller.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Port_status Indicates the current state of this port of the virtual server.   The values of this measure and their corresponding numeric values are listed below:

Measure Value Numeric Value
Disabled 0
Up 1
Down 2

Note:

By default, this measure reports one of the Measure Values listed in the table above to indicate current state of this virtual port. In the graph of this measure however, the status of the port will be represented using the numeric equivalents.
Data_transmitted Indicates the rate at which data was transmitted through this port during the last measurement period. MB/Sec Compare the values of these measures across the port to identify the port that is handling the maximum traffic.
Data_received Indicates the rate at which data was received through this port during the last measurement period. MB/Sec
Packets_transmitted Indicates the rate at which the packets were transmitted through this port during the last measurement period. Packets/Sec Compare the value of these measures across the port to identify the port that is handling the maximum traffic.
Packets_received Indicates the rate at which packets were received through this virtual port during the last measurement period. Packets/Sec
Curr_connections Indicates the number of active connections that were established through this port. Number This measure is a good indicator of the load on the virtual server.
Tot_connections Indicates the total number of connections established this port since the start of the A10 Application Delivery Controller. Number  
Connection_rate Indicates the rate at which the connections were established through this port during the last measurement period. Conns/Sec A sudden increase in the value of this measure indicates an increase in the traffic handled by the port of the virtual server.
Conn_usage Indicates the usage percentage of active connections that were made through this port. Percent A value close to 100% indicates that this virtual port is currently overloaded.
Persistent_conns Indicates the number of connections that were persistent on this port. Number TCP connections that are kept open after transactions complete are called persistent connections. Persistent connections stay open across transactions, until either the client or the server decides to close them. These connections when reused can significantly reduce the traffic overload on the port.
Peak_conns Indicates the maximum number of connections that were established through this port to the real server since the start of the A10 Application Delivery Controller. Number  
Curr_L7_requests Indicates the number of L7 requests currently processed through this port. Number Both these measures serve as effective pointers to the L7 requests processing in the A10 Application Delivery Controller.

Layer-7 load balancing, also known as application-level load balancing, is to parse L7 requests in application layer and distribute L7 requests to the servers based on different types of request content, so that it can provide quality of service requirements for different types of content and improve overall performance of the A10 Application Delivery Controller.
Tot_L7_requests Indicates the total number of L7 requests that were processed through this port. Requests/Sec
Succ_L7_requests Indicates the number of L7 requests that were processed successfully through this virtual port. Number Ideally, value of this measure should be high.