How to configure Quality of Service (QoS) on your modem

Quality of Service (QoS) allows you to prioritize certain devices or certain types of internet traffic (such as VoIP or video). This can improve performance for certain applications when bandwidth is tight, and prevent your network from becoming overloaded.

5. Select QoS in the left sidebar. 

6. Follow the steps to edit the QoS settings. Depending on your modem, you may see slight differences in how the options appear.

 

If you have a C4000 series modem, follow the instructions at the bottom of this page.

  • Step 1:  Enable QoS. 

  • Step 2:  Set the QoS traffic direction to upstream or downstream (or both, in newer models).

  • Step 3:  Select the QoS type, or "Create Custom QoS" to define your own priority rule by IP address (recommended for advanced users only). You can create multiple rules for different QoS types and/or devices. You can also remove previously created rules from the QoS Rule List at the bottom of the screen. 

  • Step 4:  When you're finished adding or removing items, click "Apply" to save your changes.
QOS Step 6

If you have a C4000 series modem, QoS will be enabled automatically when you create and apply at least one priority rule.

To set QoS, follow the steps below.

C4000 QoS steps

Step 1: Choose or manually enter the IP address of the device you want to manage. 

C4000 QoS step 1 - select device address

Step 2: Select the traffic direction you want to control (upstream, downstream, or both).

C4000 QoS step 2 - set direction

Step 3: Select high, medium or low priority. This will determine whether the chosen device is prioritized when bandwidth is limited.

C4000 QoS step 3 - select traffic priority

Step 4:  You can also remove previously created rules from the QoS Rule List at the bottom of the screen. When you're finished adding or removing items, click Apply to save your changes.

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