How to use Bandwidth Limit

As the Internet gateway. Vigor router also offers Bandwidth Limit feature, which can avoid a few clients occupying all the bandwidth resources by restricting the amount of bandwidth each client can use.

For control the bandwidth usage, the router offers the default limit of general regulation, the limitation list for IP-based policies, Smart Bandwidth Limit to apply only to the client using a large number of sessions. This article also explains the priority between them, the Auto Adjustment option for more flexibility, and using Time Schedule to turn on/off Bandwidth Limit.

To add Bandwidth Limit rules, go to Bandwidth Management >> Bandwidth Limit. There are three major parts in Bandwidth Limit: Default Limit (Overall Regulation), Limitation List and Smart Bandwidth Limit. To use any of them, remember to enable Bandwidth Limit first.

a screenshot of DrayOS Bandwidth Limit

The Default Limit

It's the general regulation. Input value here to set a limit for all the LAN clients. Note: "0" means unlimited. Therefore, if you want to enable Bandwidth Limit, but only want to use the Limitation List, you should enter "0" here.

For example, the configuration below will limit all the client's bandwidth usage to 2000 Kbps upload and 8000 Kbps download.

a screenshot of DrayOS Bandwidth Limit Settings

The Limitation List

Network Administrator can add the bandwidth policy for the specific LAN client here. Selecting "Each" to give each IP the entered bandwidth, or "Shared" to give a total bandwidth for a group of LAN clients.

For example, the configuration below has two rules. Index 1, each of the six IPs from 192.168.1.10 to 192.168.1.15 has 100 Kbps for download and upload. Index 2, the 6 IPs from 192.168.1.20 to 192.168.1.25, will share 1000 Kbps download and upload together.

a screenshot of DrayOS Bandwidth Limit Settings

Smart Bandwidth Limit

"Smart Bandwidth Limit" is used to apply bandwidth limit to only the client whose session number has exceeded the defined value (probably using Peer-to-peer file sharing), while the others can have the bandwidth specified in the default limit.

For example, the setting below will regulate a transmission limit down to 200kbps for upload and 800kbps download to the LAN client who uses more than 1000 sessions.

a screenshot of DrayOS Bandwidth Limit

The priority of Each Method

Specific Limitation has the highest priority. And among the limitation in the list, the one with the smallest index number has the highest prioity. Next will be Smart Bandwidth Limit if selected. The last will be the Default Limit.

Auto Adjustment

To better use the bandwidth you subscribed, enable Allow auto adjustment… of available bandwidth to allow the clients to obtain more bandwidth when the total bandwidth is still sufficient.

a screenshot of DrayOS Bandwidth Limit

Enable with Schedule

You can apply bandwidth limit only during the peak hours.

1. To set a schedule for the bandwidth limit, click "Schedule Profile."

a screenshot of DrayOS Bandwidth Limit

2. Select an index available.

a screenshot of DrayOS Schedule Profile List

3. Edit the schedule profile as follows,

  • Check Enable Schedule Setup,
  • Enter a Profile Name for identification.
  • Set Start Date, Start Time, and Duration time,
  • Set the How Often,
  • Click OK to save the setting.
a screenshot of DrayOS Schedule Profile

4. Go back to Bandwidth Management >> Bandwidth Limit, scroll down to the Time Schedule part. Fill in the index of schedule profile. Then, click OK to save the settings, then only during the time specified in the schedule profile, will the Bandwidth Limit be applied.

a screenshot of DrayOS Bandwidth Limit Setup

Check bandwidth usage of each host from Data Flow Monitor

Go to Diagnostics >> Data Flow Monitor, check Enable Data Flow Monitor, and it will show the current upload/download rate of each IP, and their limitations.

a screenshot of DrayOS Data Flow Monitor

Note: The "+" symbol behind the rate number means Auto Adjustment is in use, users are allowed to use more bandwidth than the limit if the total bandwidth is still sufficient.

1. Go to Bandwidth Management >> Bandwidth Limit and click "Add" to start the configuration.

a screenshot of Bandwidth Limit Setup on Vigor3900

2. Set up the new rule as follows,

  1. Enter the profile name
  2. Check Enable
  3. Customize the TX (upload) Limit and RX (download) Limit
  4. Select Each or Shared Mode. (Each: Bandwidth Limit for each LAN client; Shared: Total
  5. Bandwidth Limit for a group of LAN clients)
  6. Go to source target and click the "+" icon to specify the IP address that should follow this rule
  7. Click Apply to save
a screenshot of Bandwidth Limit Setup on Vigor3900

3. Bandwidth Limit can also be used with a schedule to restrict LAN clients' bandwidth usage only at a particular time. In the profile:

  1. Go to generate target >> Time Object
  2. Click the "+" icon to create a time object
  3. Set profile name, frequency, Start Time, and End Time
  4. Click Apply to save
a screenshot of Bandwidth Limit Setup on Vigor3900

4. Furthermore, you may enable Default TX/RX Limit to apply restrictions the other unspecified LAN clients.

5. We can also enable Smart Bandwidth Limit to restrict the bandwidth of unspecified LAN clients only when their session number is over the threshold.

a screenshot of Bandwidth Limit Setup on Vigor3900

Data Flow Monitor

To check the bandwidth usage of each client, go to Diagnostics >> Data Flow Monitor and enable the monitor then we can check the transmission rate.

a screenshot ofData Flow Monitor on Vigor3900

Published On: May 17, 2016 

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