VLAN Pool

Context

A VLAN pool is a combination of multiple VLANs and is used to simplify network deployment. The administrator plans the VLANs of users in a department as a VLAN pool. After a user passes the authentication, the authentication server authorizes the VLAN pool to the user. The device allocates VLANs in the VLAN pool to users based on the VLAN assignment algorithm. In this way, VLANs can be planned for multiple departments without the need of calculating the number of users of each department.

Procedure

Create a VLAN pool.

Choose Configuration > Basic Services > VLAN > VLAN Pool.

Click Create. The Create VLAN Pool dialog box is displayed, as shown in Figure 1.

Figure 1 Create a VLAN pool

Table 1 describes parameters on the page.

**Table 1** Create a VLAN pool
Parameter		Description
VLAN Pool name		Specifies the name of a VLAN pool.
VLAN assignment mode		Specifies the VLAN assignment algorithm in the VLAN pool to Hash or Even. When the VLAN assignment algorithm is set to Hash, VLANs are assigned to users from the VLAN pool based on the hash result of their MAC addresses. As long as the VLANs in the VLAN pool do not change, the users obtain fixed VLAN. A user is preferentially assigned the same IP address when going online at different times. When the VLAN assignment algorithm is set to Even, service VLANs are assigned to users from the VLAN pool based on the order in which users go online. Address pools mapping the service VLANs evenly assign IP addresses to users. If a user goes online many times, it obtains different IP addresses.
VLAN ID		Indicates that the specified VLAN is added to the VLAN Pool. NOTE: This parameter can be configured only after you click and add a VLAN ID to the data area below. Or you can click to clear the data in the text box.

Set the parameters.
Click OK.

Modify a VLAN pool.
1. Choose Configuration > Basic Services > VLAN > VLAN Pool.
2. Click the name of the VLAN pool in the VLAN pool list. The Modify VLAN Pool page is displayed, as shown in Table 1.
3. Modify the parameters.
4. Click OK.
Delete a VLAN pool.
1. Choose Configuration > Basic Services > VLAN > VLAN Pool.
2. Select the VLAN pool to be deleted and click Delete. The system asks you whether to delete the VLAN pool.
3. Click OK.
Refresh VLAN pools.
1. Choose Configuration > Basic Services > VLAN > VLAN Pool.
2. Click Refresh.