DPI. Traffic Structure Definition and Flexible Traffic Management [Документация VAS Experts]
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    en:dpi:dpi_brief:test_cases:dpi [2026/04/03 11:59] – [Test 2. Prioritization and Blocking Setup by Application Protocol for Shared Bandwidth] elena.krasnobryzhen:dpi:dpi_brief:test_cases:dpi [2026/04/03 12:49] (current) – [Test 3. Uplink Speed Limitation Without Deteriorating Critical Service Quality] elena.krasnobryzh
    Line 96: Line 96:
     **Preparation:** **Preparation:**
       - Remove or disable all SSG policy settings from previous tests, eliminating prioritization and bandwidth limitations.   - Remove or disable all SSG policy settings from previous tests, eliminating prioritization and bandwidth limitations.
    -  - Simultaneously enable several “heavy” internet applications, e.g.:+  - Simultaneously enable several "heavy" internet applications, e.g.:
         * Multiple torrent downloads.     * Multiple torrent downloads.
         * 4K YouTube video playback.     * 4K YouTube video playback.
    -    * Download large files from file hosting services.+    * Perform large downloads from file hosting services (you may use test files on Wiki: [[https://wiki.vasexperts.ru/test/10mb.bin|10MB]], [[https://wiki.vasexperts.ru/test/50mb.bin|50MB]], [[https://wiki.vasexperts.ru/test/100mb.bin|100MB]], [[https://wiki.vasexperts.ru/test/500mb.bin|500MB]])
         * Perform several Speedtest measurements.     * Perform several Speedtest measurements.
       - Measure traffic peaks. This can be done using any tool, including the QoE module in SSG, which has a corresponding dashboard chart. Running applications will occupy the entire physical bandwidth, potentially working poorly due to channel contention.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img14.png?nolink&500|}}   - Measure traffic peaks. This can be done using any tool, including the QoE module in SSG, which has a corresponding dashboard chart. Running applications will occupy the entire physical bandwidth, potentially working poorly due to channel contention.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img14.png?nolink&500|}}
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       - Prioritize critical protocols; test the function of protocol group management.   - Prioritize critical protocols; test the function of protocol group management.
         - Go to DPI Management → Protocol Prioritization\\ {{:en:dpi:dpi_brief:test_cases:dpi_img11.png?nolink&700|}}     - Go to DPI Management → Protocol Prioritization\\ {{:en:dpi:dpi_brief:test_cases:dpi_img11.png?nolink&700|}}
    -    - Assign classes to protocol groups in the "DSCP Value" column. Classes range from cs0 (highest priority) to cs7 (lowest), with "drop" blocking the protocol. Assign high priority (cs0) to IP telephony, VPN, Video, and messenger groups, and low priority (cs7) to the P2P group.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img15.png?nolink&600|}} +    - Assign classes to protocol groups in the column "The value of DSCP". Classes range from cs0 (highest priority) to cs7 (lowest), with "drop" blocking the protocol. Assign high priority (cs0) to VoIP applications, Video, and messenger groups, and low priority (cs7) to the P2P group.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img15.png?nolink&400|}} 
    -    - Save and “update hot parameters.” +    - Save and "update hot parameters."\\ {{:en:dpi:dpi_brief:test_cases:dpi_img15_1.png?nolink&700|}} 
    -    - Enable the "Peak bandwidth limit" checkbox and set the bandwidth in Mbps (e.g., 20).\\ {{:en:dpi:dpi_brief:test_cases:dpi_img16.png?nolink&700|}}+  - Set an upper bandwidth limit of 30 Mbps for all users: 
     +    * Go to Main Menu → SSG control  → Configuration → External channels’ usage optimization; 
     +    * Use the "Autocomplete" button and set the limit to 30 Mbps.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img16.png?nolink&700|}}
      
    -Testing is conducted similarly to Test 2. Torrents should not affect YouTube playback quality. Measure their speed before and during playback.+//Configuration of protocol group prioritization for the total bandwidth is complete.//
      
     +**Result:**\\
     +Perform tests: \\
     +  * Repeat the action — run several "heavy" internet applications simultaneously, for example:
     +    * multiple torrent downloads
     +    * 4K video on Rutube
     +    * perform large downloads from file hosting services (you may use test files on Wiki: [[https://wiki.vasexperts.ru/test/10mb.bin|10MB]], [[https://wiki.vasexperts.ru/test/50mb.bin|50MB]], [[https://wiki.vasexperts.ru/test/100mb.bin|100MB]], [[https://wiki.vasexperts.ru/test/500mb.bin|500MB]])
     +    * run multiple speed tests in Yandex Internetometer
     +  * Measure traffic peaks. Peaks should not exceed the configured maximum value. Measurement can be done using an external service or the built-in "Traffic speed" widget in the QoE dashboard.\\ {{:en:dpi:dpi_brief:test_cases:dpi_img17.png?nolink&500|}}
     +  * Despite bandwidth limitation, video and communication services should operate normally. When starting Rutube video, you can check BitTorrent downloads — their speed should decrease.