Create VLAN Policies

You can create a policy to change the VLAN (virtual LAN) identification (802.1Q) or priority value (802.1p) on a packet. VLAN policies can be applied only to classes with rate or priority policies.

Note: To perform these tasks from PolicyCenter, you must first select a configuration from the Editing Configuration drop-down list at the top of the page.

Change the VLAN Priority (802.1p)

To change the priority tag on an 802.1p class:

1. Open the priority or rate policy. (See Modify a Policy.)

2. Click VLAN in the Policy window. The Policy:VLAN window opens.  show screen

3. Select the Swap VLAN priority checkbox.

4. Enter the priority value (0–7).

5. Click OK.

6. Click apply changes in the Policy window.

PacketWise will swap the topmost priority level on the VLAN stack with the specified priority value.

Change the VLAN Identification (802.1Q)

There are three operations you can perform on VLAN identification:

• pop — removes the topmost label of the VLAN stack
• swap — replaces the topmost ID of the VLAN stack with a different ID
• push — puts an ID entry in a packet (and creates the stack if it doesn't exist)

A class can have a combination of push, swap, and pop operations in its VLAN policy. If more than one operation type is specified for a given class, they are executed in the following order: pop, swap, push. For example, a class might have a policy that specifies a swap, three pops, and a push. In this case, the three pops occur first, then the swap, and then the push.

To modify the VLAN identification tag on an 802.1Q class:

1. Open the priority or rate policy. (See Modify a Policy.)

2. Click VLAN in the Policy window. The Policy:VLAN window opens.  show screen

3. To pop off the topmost label of the VLAN stack, select the Pop checkbox and enter the number of times (1–8) you want to pop off the label.

4. To swap the topmost ID of the VLAN stack with another ID, select the Swap VLAN id checkbox and enter the ID value (0–4095).

Note: A VLAN ID swap policy will automatically zero out the existing VLAN priority. To keep an existing non-zero priority value or to set a priority, be sure to specify a VLAN priority swap policy as well.

5. To put an ID entry in a packet, select the Push VLAN id checkbox and enter the ID value (0–4095).

6. Click OK.

7. Click apply changes in the Policy window.

See also:

Classify Traffic Based on VLAN ID or Priority