If you select Limited channel, you need to set the maximum channel bandwidth to control the traffic for the data matched to the limited channel and control the occupied bandwidth which shall not exceed the set maximum bandwidth.

Limited Channel Configuration:

A company leases a 10 Mb/s China Telecom line and has 1,000 users on its LAN. It is found that many Marketing Department staff often use downloading tools such as Thunder and P2P to download, occupying most of the bandwidth and affecting the normal office business of other departments. We can set the bandwidth occupied by downloading to be limited to 2 Mb/s for the Marketing Department and 30 KB/s for each user via the traffic control system.

Step 1.Navigate to Policies > Bandwidth Management > Bandwidth Channel.

Step 2.Select Enable bandwidth management system to enable bandwidth management.

Step 3.Navigate to Policies > Bandwidth Management > Link Settings to configure the virtual line list and virtual line rules.

Step 4.Configure the limited channel.

In this example, the bandwidth management is performed for the P2P and downloaded data of Marketing Department personnel. The total bandwidth occupied by these applications is capped at 2 Mb/s.

On the Bandwidth Channel tab, click Add to add a limit channel. In the Add Bandwidth Channel dialog box, if you select Enable, the channel is enabled. Otherwise, the channel will be disabled and will not take effect temporarily.

Enter the name of the channel in the Name field.

In the Options pane, select Bandwidth Channel, and set relevant attributes of the channel in the right pane.

Bandwidth Channel: Set the target line, channel type, bandwidth of the limited or guaranteed channel, maximum bandwidth per single user, etc.

Link: Select the line applicable to the channel. In this case, the channel is matched only when the data goes through this line.

Channel Type: Select the channel type and specify the bandwidth value. In this example, the bandwidth for the data of the Marketing Department staff accessing the online banking websites and sending and receiving emails should be guaranteed. In this case, select the Limited channel and set the Outbound and Inbound parameters to 20% and 50% of the total bandwidth. The total bandwidth is 10 Mb/s, so the maximum bandwidth is 2 Mb/s.

Priority: Include High, Medium, and Low, and indicate the priority for the channel to occupy the idle bandwidth when other channels are idle.

Per-User Max Bandwidth: Limit the bandwidth occupied by a single IP address matched to this channel. In this example, you need to limit the bandwidth occupied by the P2P and download data of each Marketing Department user to 30 KB/s. In this case, set the Outbound and Inbound parameters to 30 KB/s.

Make allocated bandwidth on this bandwidth channel shared evenly among public IP addresses and Per-User Max Bandwidth settings applied to each of them (typically selected for servers providing external services): If you select this option, each WAN IP address is considered a user in the channel, so the bandwidth is evenly allocated among channel users. Single-user maximum bandwidth attribute is made available for the WAN IP address. (This option is usually used for servers providing external services. Proceed with caution.)

Applicable Object: Set the types of data that will be matched to the channel, i.e., the usage range of the channel. The setting range includes app category, applicable object, effective time, and destination IP group. Data should meet all these rules to be matched to the channel.

Application: Set the app category.

All: Indicate that it is valid for all data types.
Specified: Select a specific app category.

In App Category, select the required application category from the drop-down menu.

In this example, the P2P-related data and the download data of downloading tools shall be subject to bandwidth management, and you can select Download Tools, P2P, and P2P Stream Media. In addition, you may also select URL Category and File Type. The former controls the data access to certain types of websites, whereas the latter controls the types of files downloaded via HTTP and FTP protocols. Confirm whether the range selected in Selected is correct. Click Save to complete the settings of applicable applications.

Src Object: Set the network objects and user groups for which the channel is valid. The applicable object can be either IP address-based or user-based. In this example, to guarantee the bandwidth for all users in the Marketing Department, select User/Group. In the Groups section, select the required group path. In the Current Group section, select Group and User. In the Selected Groups and Users section, view the list of selected users and user groups. After you select Applicable Objects, click Save to complete the settings.

Schedule: Set the effective time of this channel.

Destination: Set the rules for the destination IP address or Region.

Subinterface: Set the subinterface to which the traffic channel is applicable.

VLAN: Set the VLAN to which the traffic channel is applicable.

The following page appears after the preceding parameters are set.

After setting, click OK to complete the settings for the limited channel.

Step 5.After you click OK, the set channel will appear on the Bandwidth Channel tab. The limited channel is configured.