Network - AVD Test

This test monitors the network connectivity from an external location to the chosen AVD session host. Administrators are alerted if the target session host is inaccessible over the network, or if high latencies are noticed when connecting with that host.

Target of the test : An Azure Virtual Desktop

Agent deploying the test : An external agent

Outputs of the test : One set of outputs for the AVD session host being monitored

Parameter Description

Test Period

How often should the test be executed

Host

The host for which the test is to be configured.

Targets

In the TARGETS text box, specify a comma-separated list of name:IP address pairs. While the name is just a display name, the IP address refers to the IP to be monitored. This specification will ensure that the test pings multiple IP addresses. For example - mysql:192.168.0.102,egwebsite:209.15.165.127

Packetsize

Specify the size of packets used by the test in bytes.

Packetcount

The number of packets to be transmitted during the test.

Timeout

How long after transmission should a packet be deemed lost (in seconds).

PacketInterval

Represents the interval (in milliseconds) between successive packet transmissions during the execution of the network test for a specific target.

DD Frequency

Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD frequency.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Avg network delay

Indicates the average delay between transmission of packet to a target and receipt of the response to the packet at the source.

Secs

An increase in the value of this measure is a cause for concern. Given below are some common reasons for such an anomaly:

  • The network between the target session host and the eG external agent is congested. When there is an increase in traffic on the interconnecting network, data transmission can slow down data transmission, thereby increasing communication latency.

  • The quality of the network connection between the eG external agent and the target session host is sub-par. Poor signal quality, faulty transmission lines, etc. can result in an increase in packet loss and/or network latency.

  • The target AVD session host is overloaded. If the target is very busy, it takes longer to respond to requests, and this will result in an increase in latency.

  • There are problems with network routingbetween the target AVD session host and the eG external agent . A faulty network router, routing loops, etc., can increase network latency. Check the detailed diagnosis of this test to track latency on the first three hops between the agent and the target session host. The latency to each hop can be used to determine which hop the problem lies in.

Min network delay

The minimum time between transmission of a packet and receipt of the response back.

Secs

A significant increase in the minimum round-trip time is often a sure sign of network congestion.

Packet loss

Indicates the percentage of packets lost during transmission from source to target and back.

Percent

An increase in the value of this measure is a cause for concern. Given below are some common reasons for such an anomaly:

  • The network between the target session host and the eG external agent is congested. When there is an increase in traffic on the interconnecting network, packets may be dropped.

  • The quality of the network connection between the eG external agent and the target session host is sub-par. Poor signal quality, faulty transmission lines, etc. can result in an increase in packet loss and/or network latency.

  • The target AVD session host is overloaded. If the target is very busy, it takes longer to respond to requests, and this will result in packet drops.

  • There are problems with network routingbetween the target AVD session host and the eG external agent . A faulty network router, routing loops, etc., can increase packet loss. Check the detailed diagnosis of this test to know the hops that are on the path from the external agent to the target session host, and the packet loss on each hop. This information can be used to diagnose the hop(s) that could be causing excessive packet loss.

Network availability

Indicates whether the network connection is available or not

Percent

A value of 100 indicates that the session host is connected. The value 0 indicates that the chosen session host is not connected.

Typically, the value 100 corresponds to a Packet loss of 0.

The value 0 for this measure could mean that the target AVD session host is either down or too busy, or the interconnecting network is down.