{{ $t('productDocDetail.updateTime') }}: 2025-12-25

These channels guarantee the use of important applications. By setting the minimum bandwidth, they ensure that the bandwidth occupied by the specified type of data is not smaller than a particular value to ensure that important applications can use the bandwidth properly in a busy line.

Guaranteed Channel Setting

A company leases a 10Mb/s telecommunications line, and there are 1,000 Internet users on its LAN.

They need to ensure that the data of the Finance Department's access to online banking websites and sending and receiving emails will occupy bandwidth not less than 2Mb/s when the line is busy and cannot exceed 5Mb/s.

Step 1.Go to Policies > Bandwidth Management > Bandwidth Channel, and select Enable bandwidth management system to enable bandwidth management.

Step 2.Go to Policies > Bandwidth Management > Link Settings to configure the link list and link rules. For more information about how to configure a virtual line, see Chapter 6.5.3 Link Settings.

Step 3.Configure the guaranteed channel. In this example, the channel is used to ensure the bandwidth for the data of the Finance Department staff accessing the online banking websites and receiving and sending emails.

Step 4.On the Bandwidth Channel page, click Add and select Add. Then, the Add Bandwidth Channel dialog box appears.

Step 5.Select Enable to enable this channel. Otherwise, the channel is disabled and the bandwidth management function does not take effect.

Name: Enter the name of the channel.

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. The lines listed in the Link drop-down list need to be set on the Link page in advance. For more information about how to set a link, see Chapter 6.5.3 Link Settings.

Channel Type: Select the channel type and specify the bandwidth value. In this example, the bandwidth for the data of the Finance Department staff accessing the online banking websites and sending and receiving emails should be guaranteed at 2 Mb/s (Min) and 5 Mb/s (Max). Select Guaranteed channel, and set the minimum and maximum values of both outbound bandwidth and inbound bandwidth to 20% and 50% of the total bandwidth, respectively. The total bandwidth is 10 Mb/s, so the minimum bandwidth is 2 Mb/s and the maximum bandwidth is 5 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, there is no need to limit the maximum bandwidth per user, so the option is not selected.

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

Applicable Application: Set the app category. If you select All, it is valid for all data types. If you select the Specific option, there are App Category, URL Category, and File Type.

In this example, to guarantee the bandwidth for the data of receiving and sending emails and accessing online banking websites, select Mail/All and Internet Banking for the App Category.

In addition, File Type is used to control 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.

Applicable Objects: 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 Finance Department, select User. 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:

Network: Set the rules for the destination IP address.

Region: Set the destination IP address.

Interface:

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

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

Choose None if no VLAN or SubInterface is available so that the channel will be valid for the physical interface.

After you set these parameters, click OK to complete the setting for a guaranteed channel.

Step 6.After clicking OK, the set channel will appear on the Bandwidth allocation, and the guaranteed channel configuration will be completed.