This article applies to BIG-IP 9.x through 10.x. For information about other versions, refer to the following articles:

• SOL13558: Allowing asymmetric routed connections across multiple VLANs (11.x)

To configure your BIG-IP system to accept asymmetric routing connections across multiple VLANs, perform one of the following procedures:

• Using a custom FastL4 profile with loose initialization and loose close enabled (To allow asymmetric routing per virtual sever)
• Disabling VLAN-keyed connections (To allow asymmetric routing system wide)

Using a custom FastL4 profile with loose initialization and loose close enabled

To allow an individual virtual server to accept asymmetric routing connections, you can create a custom FastL4 profile with loose initialization and loose close enabled, and associate the profile with the virtual server. To do so, perform the following procedure:

Impact of procedure: Only virtual servers associated with the custom FastL4 profile will accept asymmetric routed connections. For platforms that contain a PVA chip, you must additionally disable pva-acceleration in the FastL4 profile.

Command line

1. Log in to the command line.
2. Create the profile using the following command syntax:
   
   bigpipe profile fastl4 <profile_name> [pva-acceleration none] loose close enable loose initiation enable
   
   For example, to create a FastL4 profile named MyL4Profile, you would type the following command:
   
   bigpipe profile fastl4 MyL4Profile loose close enable loose initiation enable
   
   For example on platforms that contain a PVA chip, to disable pva-acceleration in the FastL4 profile, you would type the following command:
   
   bigpipe profile fastl4 MyL4Profile pva acceleration none loose close enable loose initiation enable
3. Associate the custom FastL4 profile with an existing virtual server using the following syntax:
   
   bigpipe virtual <virtual server name> {profile <custom profile>}
   
   For example, to associate the MyL4Profile custom profile created in Step 2 with a virtual server named MyVip, you would type the following command:
   
   bigpipe virtual MyVip {profile MyL4Profile}
4. Save the configuration by typing the following command:
   
   bigpipe save
   

Configuration utility

1. Log in to the Configuration utility.
2. Navigate to the Local Traffic > Virtual Servers > Profiles screen.
3. From the Protocol box, select FastL4.
4. Click Create.
5. In the Name field, type a name for the profile.
6. Select the Custom check boxes for the PVA Acceleration, loose initiation and loose close settings, to allow you to customize those settings.
   
7. From the PVA Acceleration box, select None.
   
8. Select the check box for Loose Initiation to enable the loose initiation feature.
9. Select the check box for Loose Close to enable the loose close feature.
10. Click Finished.
11. Navigate to the Local Traffic > Virtual Severs screen.
12. Click the appropriate virtual server.
13. From the Protocol Profile box, select the new custom FastL4 profile you just created.
14. Click Update.

Disabling VLAN-keyed connections

To allow the BIG-IP system to accept asymmetric routing connections, disable VLAN-keyed connections using the following procedure.

Impact of procedure: Disabling VLAN-keyed connections allows all virtual servers to perform asymmetric routing; this is a global setting.

1. Log in to the command line.
2. Disable the connection.vlankeyed db key by typing the following command:
   
   bigpipe db Connection.VlanKeyed disable
   

Supplemental Information

• SOL4832: Overview of Packet Velocity ASIC Acceleration
• SOL4604: The TMM does not support the Connection.VlanKeyed db key