This article explains how to use the Experience Monitoring page widgets to analyze performance and user experience in your network.
For more about reviewing analytics on the Experience Monitoring page, see Using the Experience Monitoring Page.
Each of the experience monitoring drill-down pages shows different widgets providing more information about various aspects of the connection. The following sections outline which widgets are available for which entities. The Available for column shows which pages the widgets appears on.
When you click a specific site, in addition to the Experience Score and Connection Details, you also have the following tabs, each with its own information:
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Hosts
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Last Mile
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Application Performance
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Applications
The Hosts tab lists all of the users and hosts currently connected through the site. Clicking on one of the items in the list will take you to the Experience Monitoring page of that item.
The Socket tab shows the following data for the site Sockets:
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CPU Load - Percent usage for each of the Socket cores for the defined time range. If the site is configured with High Availability (HA), the graph shows the usage for both the primary and secondary Socket cores.
If you notice high Socket CPU utilization, here are the steps to troubleshoot:
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Access the Socket WebUI and select the HW Status tab.
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Check the current CPU % usage for each core.
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Monitor for consistent CPU utilization above 90%, as this will directly impact Socket performance and cause packet loss and high latency.
If you observe constant high CPU usage concurrent with network packet loss:
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Document when the high CPU usage occurs.
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Note which cores are experiencing high utilization.
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Contact Cato Support for assistance.
For more information about troubleshooting Socket CPU usage, see Performance Issues for Socket Sites Troubleshooting.
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This feature requires minimum Socket versions as follows:
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For physical Sockets - Socket version 21.1.18975
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For virtual Sockets - Socket version 22
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The Last Mile tab includes the following metrics for the quality of connection for the encrypted tunnel connection to the PoP.
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Graph |
Description |
|---|---|
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Packet Loss Upstream |
Percentage of packets that were lost over the last mile inside the tunnel for upstream traffic. |
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Packet Loss Downstream |
Percentage of packets that were lost over the last mile inside the tunnel for downstream traffic. |
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Discarded Packets Upstream |
Percentage of packets that were received but not processed for upstream traffic. |
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Discarded Packets Downstream |
Percentage of packets that were received but not processed for downstream traffic. |
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Distance |
Distance between the site and the Cato Cloud inside the tunnel. |
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Tunnel Age |
Total time that the current DTLS tunnel between the Socket and the PoP is connected. |
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Jitter Upstream |
Difference in time delay in milliseconds (ms) between upstream data packets. |
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Jitter Downstream |
Difference in time delay in milliseconds (ms) between downstream data packets. |
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Max Throughput Upstream |
Maximum measured throughput inside the tunnel for upstream traffic |
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Max Throughput Downstream |
Maximum measured throughput inside the tunnel for downstream traffic |
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Avg Throughput Upstream |
Average upstream throughput inside the tunnel for each link (over the length of the bucket) |
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Avg Throughput Downstream |
Average downstream throughput inside the tunnel for each link (over the length of the bucket) |
The Application Performance tab displays the following widgets:
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Graph |
Description |
|---|---|
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Time to First Byte |
Duration of time between the HTTP request and the receipt of the first byte. |
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HTTP/S Latency |
Duration of time between the request and the response. |
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TCP Connect |
Time taken to establish a TCP connection. |
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TLS Connect |
Time taken to establish a TLS connection. |
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HTTP/S Error Rate |
Percentage of HTTP errors. |
When you click a specific user, in addition to the Experience Score and Connection Details, you also have the following tabs, each with its own information:
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Device Hardware
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Wi-Fi
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LAN Gateway
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Last Mile
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Application Performance
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Applications
The Device Hardware tab provides information about the user's computer. It includes:
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CPU - indicates the percentage of CPU being used
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Memory - indicates the amount of memory being used
The LAN Gateway tab displays the following widgets:
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Packet Loss - Percentage of packets lost inside the LAN gateway
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Distance - Distance between the site and the Cato Cloud inside the tunnel.
The Last Mile tab includes the following metrics for the quality of connection for the encrypted tunnel connection to the PoP.
|
Graph |
Description |
|---|---|
|
Packet Loss Upstream |
Percentage of packets that were lost over the last mile inside the tunnel for upstream traffic. |
|
Packet Loss Downstream |
Percentage of packets that were lost over the last mile inside the tunnel for downstream traffic. |
|
Distance |
Distance between the site and the Cato Cloud inside the tunnel. |
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Tunnel Age |
Total time that the current DTLS tunnel between the Socket and the PoP is connected. |
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Max Throughput Upstream |
Maximum measured throughput inside the tunnel for upstream traffic |
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Max Throughput Downstream |
Maximum measured throughput inside the tunnel for downstream traffic |
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Avg Throughput Upstream |
Average upstream throughput inside the tunnel for each link (over the length of the bucket) |
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Avg Throughput Downstream |
Average downstream throughput inside the tunnel for each link (over the length of the bucket) |
The Application Performance tab is divided into 3 sections of widgets.
Real User Metrics
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Graph |
Description |
|---|---|
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Time to First Byte |
Duration of time between the HTTP request and the receipt of the first byte. |
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HTTP/S Latency |
Duration of time between the request and the response. |
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TCP Connect |
Time taken to establish a TCP connection. |
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TLS Connect |
Time taken to establish a TLS connection. |
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HTTP/S Error Rate |
Percentage of HTTP errors. |
Internet Applications Synthetic Probes via Cato Tunnel
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Graph |
Description |
|---|---|
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Packet Loss |
Percentage of packets that were lost over the last mile of simulated network traffic to Internet applications over the Cato Cloud. |
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Distance |
Distance between the site and the Cato Cloud for the last mile of simulated network traffic to Internet applications over the Cato Cloud. |
WAN Applications Synthetic Probes via Cato Tunnel
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Graph |
Description |
|---|---|
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Packet Loss |
Percentage of packets that were lost over the last mile of simulated network traffic to WAN applications over the Cato Cloud. |
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Distance |
Distance between the site and the Cato Cloud for the last mile of simulated network traffic to WAN applications over the Cato Cloud. |
This tab lists the applications currently being accessed by the remote or office user, and provides information about their experience, number of hosts connected, and more.
These tabs show application-specific metrics for UCaaS traffic including Zoom and Microsoft Teams sessions. The metrics provide insights into the experience of video, audio, and screen sharing during meetings.
Note
Note: Please contact cato-releases@catonetworks.com for more information about enabling and using this feature.
These metrics require the configuration of Cato connectors for Microsoft Teams and Zoom. For more information, see these articles:
Note
Note: The Zoom and MS Teams tabs only appear for a user once the user has connected to the app after the connector is configured.
The information shown for each meeting includes the Device used, Meeting date, Call duration, Total participants, and overall Experience for the meeting (Poor, Fair, or Good). This Experience score is based on the scores for Audio, Video, and Screen sharing experience, and equals the lowest score of those three.
The scores for Audio, Video, and Screen sharing experience are based on a calculation of Mean Opinion Score (MOS) taking into account packet loss, jitter, and latency. The scores are based on an average of the MOS calculated for upstream and downstream traffic. The page shows packet loss, jitter, and latency for both upstream and downstream traffic.
This is the formula for calculating MOS:
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MOS = 1 + 0.035 * R + 0.000007 * R * (R - 60) * (100 - R) where R is the rating factor determined by effective latency and packet loss
Note
Notes:
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For Microsoft Teams
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It may take up to 30 minutes for meeting data to be shown
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The connector generally accesses meeting data up to 1 hour back. However, when the connector is first configured, up to 5 hours of data can be accessed
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The metrics include data from both Microsoft Teams and Skype meetings
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When you click a specific host, in addition to the Experience Score and Connection Details, you also have the following tabs, each with its own information:
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Last Mile
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Application Performance
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Applications
The Last Mile tab displays the all following widgets for Socket sites. Other site types only show the data that they are able to collect, ie. IPsec sites only show Distance and Tunnel Age.
|
Graph |
Description |
Available for |
|---|---|---|
|
Packet Loss Upstream |
Percentage of packets that were lost over the last mile inside the tunnel for upstream traffic. |
Site, User, and Host Monitoring |
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Packet Loss Downstream |
Percentage of packets that were lost over the last mile inside the tunnel for downstream traffic. |
Site, User, and Host Monitoring |
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Discard Packets Upstream |
Percentage of packets that were received but not processed for upstream traffic. |
Site and Host Monitoring |
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Discarded Packets Downstream |
Percentage of packets that were received but not processed for downstream traffic. |
Site and Host Monitoring |
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Distance |
Distance between the site and the Cato Cloud inside the tunnel. |
Site, User, and Host Monitoring |
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Tunnel Age |
Total time that the current DTLS tunnel between the Socket and the PoP is connected. |
Site, User, and Host Monitoring |
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Jitter Upstream |
Difference in time delay in milliseconds (ms) between upstream data packets. |
Site and Host Monitoring |
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Jitter Downstream |
Difference in time delay in milliseconds (ms) between downstream data packets. |
Site and Host Monitoring |
The Application Performance tab is divided into 3 sections of widgets.
Real User Metrics
|
Graph |
Description |
|---|---|
|
Time to First Byte |
Duration of time between the HTTP request and the receipt of the first byte. |
|
HTTP/S Latency |
Duration of time between the request and the response. |
|
TCP Connect |
Time taken to establish a TCP connection. |
|
TLS Connect |
Time taken to establish a TLS connection. |
|
HTTP/S Error Rate |
Percentage of HTTP errors. |
Internet Applications Synthetic Probes via Cato Tunnel
|
Graph |
Description |
|---|---|
|
Packet Loss |
Percentage of packets that were lost over the last mile of simulated network traffic to Internet applications over the Cato Cloud. |
|
Distance |
Distance between the site and the Cato Cloud for the last mile of simulated network traffic to Internet applications over the Cato Cloud. |
WAN Applications Synthetic Probes via Cato Tunnel
|
Graph |
Description |
|---|---|
|
Packet Loss |
Percentage of packets that were lost over the last mile of simulated network traffic to WAN applications over the Cato Cloud. |
|
Distance |
Distance between the site and the Cato Cloud for the last mile of simulated network traffic to WAN applications over the Cato Cloud. |
When you click a specific application, in addition to the Application Score, you also have the following tabs, each with its own information:
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Application Performance
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Users/Hosts
The Application Performance tab displays the following widgets:
|
Graph |
Description |
|---|---|
|
Time to First Byte |
Duration of time between the HTTP request and the receipt of the first byte. |
|
HTTP/S Latency |
Duration of time between the request and the response. |
|
TCP Connect |
Time taken to establish a TCP connection. |
|
TLS Connect |
Time taken to establish a TLS connection. |
|
HTTP/S Error Rate |
Percentage of HTTP errors. |
The Users/Hosts tab displays a list of users or hosts currently working with the selected application. In addition to usage statistics, connection information such as the country from which they're connecting and through which PoP, you can also click on a user or host, which will take you to the Experience Pages for that entity.
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