Endpoint Connectivity Test

High network latencies, poor signal strength, or packet losses during transmission can cause significant slow-downs in request processing by the desktop. Hence, monitoring latencies between the Dell Wyse thin clients and individual client terminals is important.

Using this test, an administrator can identify user sessions that are being impacted by high latencies or by excessive packet drops. In some cases, a Dell Wyse thin client may regard a user session as active, even though the network link connecting the user terminal to the Dell Wyse thin client has failed. The Endpoint Connectivitytest alerts administrators to such situations. In addition, this test also reports the signal strength and quality of WiFi network accessed by the Dell Wyse Thin Clients.

Target of the test : Dell Wyse Client Group

Agent deploying the test : A remote agent

Outputs of the test : One set of outputs for every user currently connected to the Dell Wyse thin client.

Configurable parameters for the test
Parameter	Description
Test Period	How often should the test be executed.
Host	The nick name of the Dell Wyse Client Group component for which this test is to be configured.
Port	Refers to the port at which the specified host listens to. By default, this is NULL.
Inside View Using	To obtain the 'inside view' of performance of the Dell Wyse thin clients - i.e., to measure the internal performance of the Dell Wyse thin clients - this test uses a light-weight VM Agent software deployed on each of the Dell Wyse thin clients. The VM Agents collect performance metrics from the Dell Wyse thin clients and communicate the metrics to the eG remote agent using TCP protocol. Accordingly, by default, this parameter is set to eG VM Agent.
Report By User	Since this test runs for an 'Dell Wyse Client Group' component, this flag is set to No by default.
Report Powered OS	Since this test runs for an 'Dell Wyse Client Group' component, this flag is set to Yes by default.
Is Cloud VMs	Since this test runs for an 'Dell Wyse Client Group' component, this flag is set to Yes by default.
DD Frequency	Refers to the frequency with which detailed diagnosis measures are to be generated for this test. For instance, if you set to 1:1, it means that detailed measures will be generated every time this test runs, and also every time the test detects a problem.
Detailed Diagnosis	To make diagnosis more efficient and accurate, the eG suite 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

Total devices connected to local router

Indicates the number of Dell Wyse Thin Clients connected to the local router.

Number

This measure is only applicable for Summary descriptor.

Wi-Fi signal strength

Indicates the signal strength of the WiFi network accessed by the Dell Wyse thin client.

By default, the eG VM agent executes the netsh wlan show interface command on the Dell Wyse thin client to determine the WiFi signal strength and the quality of the signal. eG Enterprise determines the WiFi signal strength based on the signal quality range determined upon execution of the command. The table below indicates the values that this measure can report and their corresponding numeric equivalents along with the signal quality range:

Measure value	Numeric Value	Signal Quality Range
Poor	0	0
Weak	1	1%-25%
Fair	2	26%-50%
Good	3	51%-75%
Excellent	4	Above 75%

Note:

By default, this measure reports the above-mentioned Measure Values while indicating the Wi-Fi signal strength. However, in the graph of this measure, signal strength will be represented using the corresponding numeric equivalents only - i.e., 0 to 4.

Wi-Fi signal quality

Indicates the percentage of signal strength of the WiFi network accessed by the Dell Wyse thin client.

Percent

A high value is preferred for this measure.

Local router latency

Indicates the time taken by the local router to respond to the requests made from the Dell Wyse thin client.

Milliseconds

A high value is a cause for concern, as it indicates a potentially latent function. The detailed diagnosis of this measure reveals the IP address of the local router.

Local router packet loss

Indicates the percentage of packets lost during data exchange between the Dell Wyse thin client and the local router.

Percent

ISP latency

Indicates the time taken by the ISP (Internet Service Provider) to respond to the requests made from the Dell Wyse thin client.

Milliseconds

A high value is a cause for concern, as it indicates a potentially latent function.

The detailed diagnosis of this measure reveals the IP address of the Internet Service Provider.

ISP packet loss

Indicates the percentage of packets lost during data exchange between the Dell Wyse thin client and the ISP (Internet Service Provider).

Percent

Internet latency

Indicates how long the Dell Wyse thin client waited to get response from internet.

Milliseconds

This metric is collected by pinging Google DNS servers. Seeing higher ping latency when pinging Google's DNS servers (e.g. 8.8.8.8) can indicate a few potential issues:

Network congestion or routing issues between your network and Google's DNS servers, resulting in increased latency. This could be due to problems with your ISP's network or the intermediate networks the traffic traverses.
Issues with your local network equipment (routers, switches, etc.) or the cabling, introducing delays in the path to Google's DNS servers.
Overloaded or underperforming DNS servers within your ISP's network, adding latency before the query reaches Google's servers.

As for toleration limits and when to complain:

For general web browsing, DNS lookup times under 50ms are considered good. Between 50-150ms is acceptable but may cause slightly slower loading times. Anything over 150ms will likely result in noticeable delays when accessing websites.
For time-sensitive applications like Virtual Desktop Access, Video conferences, video streaming, online gaming, etc., DNS lookup times should ideally be under 25ms for a smooth experience. Anything over 50ms could potentially cause issues.

If you consistently experience DNS lookup times over 150ms when pinging Google's DNS servers, and other internet services are also slow, it would be reasonable to contact your ISP and report the issue, as it indicates a problem with their network or DNS infrastructure impacting your overall internet performance.

However, if the high latency is intermittent or only occurs during peak usage hours, some amount of increased latency may be expected due to network congestion and might not warrant an immediate complaint.

In summary, while some DNS latency is normal, persistent high latency over 150ms when pinging reliable DNS servers like Google's could signify an issue worth reporting to your ISP for investigation.

Internet packet loss

Indicates the percentage of packets lost during data exchange between the Dell Wyse thin client and the internet.

Percent

This metric is collected by pinging Google DNS servers. Seeing packet loss or/and higher latency when pinging Google's DNS servers (e.g. 8.8.8.8) can indicate a few potential issues:

Network congestion or routing issues between your network and Google's DNS servers, resulting in increased latency and packet loss. This could be due to problems with your ISP's network or the intermediate networks the traffic traverses.
Issues with your local network equipment (routers, switches, etc.) or cabling, introducing delays and packet drops in the path to Google's DNS servers.
Overloaded or underperforming DNS servers within your ISP's network, causing latency spikes and packet loss before the query reaches Google's servers.

As for toleration limits and when to complain:

For general web browsing, DNS lookup times under 50ms are considered good, and packet loss under 1% is generally tolerable.
Between 50-150ms latency with 1-3% packet loss is poor quality and may cause noticeable delays when accessing websites.
For time-sensitive applications like video streaming, online gaming, etc., DNS lookup times should ideally be under 25ms with minimal packet loss for a smooth experience.

Latency over 50ms or packet loss over 1% could potentially cause issues. If you consistently experience DNS lookup times over 150ms with over 3% packet loss when pinging Google's DNS servers, and other internet services are also slow, it would be reasonable to contact your ISP and report the issue, as it indicates a problem with their network or DNS infrastructure impacting your overall internet performance. However, if the high latency and packet loss are intermittent or only occur during peak usage hours, some amount of increased latency and occasional packet drops may be expected due to network congestion and might not warrant an immediate complaint. In summary, persistent high latency over 150ms with over 3% packet loss when pinging reliable DNS servers like Google's could signify an issue worth reporting to your ISP for investigation.

Cloud gateway latency

Indicates how long the Dell Wyse thin client waited to get response from Cloud gateway.

Milliseconds

The detailed diagnosis of this measure reveals the IP address of Dell Wyse thin client.

Cloud gateway packet loss

Indicates the percentage of packets lost during data exchange between the Dell Wyse thin client and the Cloud gateway.

Percent