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==Summary==
 
==Summary==
    
The <b>QoS</b> (<b>Quality of Service</b>) page is used to set up Smart Queue Management (SQM) instances which can limit the download and upload speeds of selected network interfaces.
 
The <b>QoS</b> (<b>Quality of Service</b>) page is used to set up Smart Queue Management (SQM) instances which can limit the download and upload speeds of selected network interfaces.
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This manual page provides an overview of the QoS windows in {{{name}}} devices.
 
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This manual page provides an overview of the QoS windows in {{{name}}} routers.
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The <b>Smart Queue Management</b> section contains a list of existing SQM instances and can be used manage them (edit/delete/enable/disable). By default the list is empty:
 
The <b>Smart Queue Management</b> section contains a list of existing SQM instances and can be used manage them (edit/delete/enable/disable). By default the list is empty:
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[[File:Networking_all_manual_qos_smart_queue_management.png|border|class=tlt-border]]
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[[File:Networking_rutos_manual_qos_smart_queue_management.png|border|class=tlt-border]]
 
----
 
----
 
To add a new instance and begin editing, look below to the <b>Add New SQM Configuration</b> section and:
 
To add a new instance and begin editing, look below to the <b>Add New SQM Configuration</b> section and:
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</ol>
 
</ol>
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[[File:Networking_all_manual_qos_and_new_sqm_example.png]]
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[[File:Networking_rutos_manual_qos_and_new_sqm_example.png]]
    
Refer to the sections below for information on editing SQM instances.
 
Refer to the sections below for information on editing SQM instances.
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The <b>Basic Settings</b> section is used to set download and upload speed limits for a selected network interface.
 
The <b>Basic Settings</b> section is used to set download and upload speed limits for a selected network interface.
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[[File:Networking_all_manual_qos_smart_queue_management_basic_settings.png|border|class=tlt-border]]
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[[File:Networking_rutos_manual_qos_smart_queue_management_basic_settings.png|border|class=tlt-border]]
    
<table class="nd-mantable">
 
<table class="nd-mantable">
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       <td>Upload speed (kbit/s)</td>
 
       <td>Upload speed (kbit/s)</td>
 
       <td>integer [0..9999999999999999]; default: <b>none</b></td>
 
       <td>integer [0..9999999999999999]; default: <b>none</b></td>
       <td>Limits the upload speed (ingress) of the selected interface to the value specified in this field.</td>
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       <td>Limits the upload speed (egress) of the selected interface to the value specified in this field.</td>
 
     </tr>
 
     </tr>
 
</table>
 
</table>
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The <b>Advanced Settings</b> section describes the internal logic of the SQM configuration.
 
The <b>Advanced Settings</b> section describes the internal logic of the SQM configuration.
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[[File:Networking_all_manual_qos_smart_queue_management_advanced_settings.png|border|class=tlt-border]]
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[[File:Networking_rutos_manual_qos_smart_queue_management_advanced_settings.png|border|class=tlt-border]]
    
<table class="nd-mantable">
 
<table class="nd-mantable">
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<ul>
 
<ul>
     <li>Ethernet LAN machines (including the router)</li>
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     <li>Ethernet LAN machines (including the device)</li>
 
     <li>Ethernet LAN machines and WAN<span class="asterisk">*</span></li>
 
     <li>Ethernet LAN machines and WAN<span class="asterisk">*</span></li>
 
{{#ifeq:{{{wifi}}}|1|<li>WiFi devices<span class="asterisk">**</span></li>
 
{{#ifeq:{{{wifi}}}|1|<li>WiFi devices<span class="asterisk">**</span></li>
 
     <li>Wifi devices and LAN machines<span class="asterisk">**</span></li>
 
     <li>Wifi devices and LAN machines<span class="asterisk">**</span></li>
     <li>WiFi devices and WAN<span class="asterisk">**</span></li>
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     <li>WiFi devices and WAN<span class="asterisk">**</span></li>|}}
|}}</ul>
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</ul>
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<span class="asterisk">*</span> Since LAN machines communicate with WAN servers over the router which is also considered a LAN machine, LAN-to-WAN and WAN-to-LAN speeds are also affected.
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<span class="asterisk">*</span> Since LAN machines communicate with WAN servers over the device
{{#ifeq:{{{wifi}}}|1|<span class="asterisk">**</span> By default, wireless network interfaces are attached to the default Ethernet LAN network (<i>br-lan</i>). If you wish for WiFi speeds to remain unaffected, consider creating an additional Ethernet interface and attach your WiFi interfaces to it. This can done in the following WebUI pages:
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which is also considered a LAN machine, LAN-to-WAN and WAN-to-LAN speeds are also affected.
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{{#ifeq:{{{wifi}}}|1|<span class="asterisk">**</span> By default, wireless network interfaces  
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are attached to the default Ethernet LAN network (<i>br-lan</i>). If you wish for WiFi speeds  
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to remain unaffected, consider creating an additional Ethernet interface and attach your WiFi  
 +
interfaces to it. This can done in the following WebUI pages:
    
<ul>
 
<ul>
 
     <li>Network → [[{{{name}}} Interfaces|Interfaces]] (to create an additional network interface)</li>
 
     <li>Network → [[{{{name}}} Interfaces|Interfaces]] (to create an additional network interface)</li>
     <li>Network → [[{{{name}}} Wireless|Wireless|]] (to attach WiFi interfaces to Ethernet interfaces)</li>
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     <li>Network → [[{{{name}}} Wireless|Wireless]] (to attach WiFi interfaces to Ethernet interfaces)</li>
 
</ul>
 
</ul>
 
|}}
 
|}}
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Changing the speeds of other network interfaces may also affect more than one interface. However, the Ethernet LAN interface (<i>br-lan</i>) is related to most interfaces. Therefore, it is advised to limit the speeds of other interfaces in order to achieve more precise results (unless, of course, your goal to is to limit the speed of <i>br-lan</i>).
 
Changing the speeds of other network interfaces may also affect more than one interface. However, the Ethernet LAN interface (<i>br-lan</i>) is related to most interfaces. Therefore, it is advised to limit the speeds of other interfaces in order to achieve more precise results (unless, of course, your goal to is to limit the speed of <i>br-lan</i>).
 
----
 
----
Another example to consider is limiting WAN interface speeds since that is the most widely implemented use case and affects less interface-to-interface relationships. For instance, limiting <b>Ethernet WAN (<i>eth1</i>) speed to 50 Mbps</b>would produce the following results:
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Another example to consider is limiting WAN interface speeds since that is the most widely implemented use case and affects less interface-to-interface relationships. For instance, limiting <b>Ethernet WAN (<i>eth1</i>) speed to 50 Mbps</b> would produce the following results:
    
<table class="nd-othertables_3" style="text-align: center;">
 
<table class="nd-othertables_3" style="text-align: center;">
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Please take caution when using SQM to limit speeds in order to avoid unexpected results.
 
Please take caution when using SQM to limit speeds in order to avoid unexpected results.
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==Add New SQM Configuration==
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The <b>Add New SQM Configuration</b> is used to create new SQM instances. Simply enter a custom name for the new instance and click the 'Add' button. You will find the newly added instance in the "[[{{{name}}}_QoS#Smart_Queue_Management|Smart Queue Management]]" section right above this one.
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[[File:Networking_all_manual_qos_and_new_sqm.png|border|class=tlt-border]]
      
[[Category:{{{name}}} Services section]]
 
[[Category:{{{name}}} Services section]]

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