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Manual Chapter: Optimized Applications
Manual Chapter
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About optimized applications for WAN Optimization

An optimized application in the WAN Optimization Manager™ (WOM®) context is a virtual server with which the BIG-IP® system associates an iSession™ profile and other relevant WAN optimization profiles. WAN optimization on the BIG-IP system requires an optimized application on the initiating side of the WAN and an iSession listener (iSession-terminating virtual server) on the receiving side of the WAN to complete the connection for all application traffic.

For some types of application traffic, such as CIFS and FTP, the system also requires an application-specific virtual server (also listed as an optimized application) on the receiving side. After the iSession listener terminates the connection, BIG-IP WOM directs the traffic to this virtual server for additional handling. Being able to create more than one virtual server for an application on the receiving side allows you to apply different profiles to selected application traffic that has different destinations.

For each application you select on the Quick Start screen, BIG-IP WOM automatically configures an optimized application. In addition, you can customize the system-supplied optimized applications and manually create new ones to specify where and how you want BIG-IP WOM to optimize specified application traffic.

About iSession profiles

The iSession™ profile tells the system how to optimize traffic. WAN optimization requires an iSession profile at both ends of the iSession connection. WAN Optimization Manager™ (WOM®) includes the parent iSession profile isession, which is appropriate for all application traffic, and other iSession profiles that have been pre-configured for specific applications. The name of each pre-configured iSession profile indicates the application for which it was configured, such as isession-cifs.

When you configure optimized applications on the Quick Start screen, the system automatically associates an iSession profile with every virtual server it creates for the selected optimized applications. The system also associates the system-supplied iSession profile isession with the iSession listener isession-virtual it creates for inbound traffic.

You must associate an iSession profile with any virtual server you create for a custom optimized application for outbound traffic, and any iSession listener you create for inbound traffic.

Customizing compression settings for iSession traffic

In certain circumstances, you may want to change the symmetric compression settings for application traffic you specify. The compression settings are in the iSession™ profile. Instead of changing the parent isession profile, create a custom iSession profile, and give it a descriptive name.
  1. On the Main tab, click Local Traffic > Profiles > Services > iSession. The iSession profile list screen opens.
  2. Click Create. The New iSession Profile screen opens.
  3. In the Name field, type a name for the profile. Names must begin with a letter, and can contain only letters, numbers, and the underscore (_) character.
  4. Select the Custom check box. The fields in the Settings area become available for configuring.
  5. Enable compression and select at least one compression method. To establish and maintain a connection, at least one compression option must be the same on both BIG-IP WOM® devices.
    Option Description
    Compression This option activates the compression feature, according to the method or methods you choose.
    Deflate This high quality compression algorithm is typically slower than LZO, unless the system platform supports hardware acceleration. If you enable Deflate and disable Adaptive, you can also select the Deflate Level.
    LZO The Lempel_Ziv_Oberhumer algorithm is best for interactive protocols (such as telnet) or high-bandwidth protocols that compress easily(such as those used for data replication).
    Bzip2 The bzip2 data compression algorithm improves compression ratios on low-bandwidth data links.
    Adaptive This option chooses the best algorithm for current traffic from among those that are enabled, and changes as traffic conditions change. If it selects Deflate, it also selects an optimum Deflate Level.
    Deduplication This option tells the system to use symmetric data deduplication.
    Note: For deduplication to take place, the iSession listener that receives this traffic must have associated with it an iSession profile that also has this setting enabled.
The custom iSession profile appears on the iSession list screen.
For this profile to take effect, you must associate it with a virtual server for outbound traffic to the WAN.

Manually configuring optimized applications for outbound traffic

For common applications, the easiest way to configure optimized applications is on the Quick Start screen. You can manually configure an optimized application by creating a virtual server for outbound traffic for an application that is not listed on the Quick Start screen, such as HTTPS.
  1. On the Main tab, click WAN Optimization > Optimized Applications > Create Outbound.
  2. In the Name field, type a name that reflects the type of application traffic you want to optimize.
  3. In the Port field, type the service port used by the application, or select an application from the list. If you select from the list, the associated default port appears. If the application you select uses a different port on your system, select Other and type the port number.
  4. If you selected CIFS, FTP, or MAPI, select the corresponding application profile from the Application Profile list that appears. The list displays only those profiles that pertain to the application you specified in the Port setting.
  5. Select the VLANs on which the virtual server for this optimized application receives incoming LAN traffic destined for the WAN.
  6. Select the iSession™ profile to associate with this virtual server. The iSession Profile list includes system-supplied profiles that have been created with optimal settings for specific applications.
    Important: For WAN optimization to occur, you must specify an iSession profile (not None).
    Note: The default profile isession does not include application data encryption. To specify the use of an SSL profile on the outbound connection, select isession-encrypt or a customized iSession profile that includes application data encryption.
  7. Click Finished.
The BIG-IP® WOM® system creates a virtual server, associates the profiles you specified, and thus, configures an optimized application.
Make sure that an iSession listener is configured on the local endpoint of the BIG-IP WOM that receives this application traffic.

Manually configuring optimized applications for inbound traffic

The system-supplied iSession™ listener, isession-virtual, completes the optimized connection for all inbound application traffic. Some applications, such as CIFS and FPT, require an additional application virtual server for incoming traffic. This virtual server provides further processing of the traffic after the iSession listener terminates the iSession connection.
  1. On the Main tab, click WAN Optimization > Optimized Applications > Create Inbound.
  2. Specify whether this virtual server is a single host or network address.
  3. For the Destination setting, Address, type the IP address you want to use to receive specified application traffic from the WAN. Typically, this value is 0.0.0.0, which matches traffic to all destination servers.
  4. Type a name that reflects the type of application traffic you want to optimize.
  5. Type the service port used by the application, or select an application from the list. If you select from the list, the associated default port appears. If the application you select uses a different port on your system, select Other and type the port number. If you select a port and application for which at least one application profile exists on the system, the Application Profile setting appears.
  6. If the Application Profile setting is available, select a profile for this traffic.
  7. Select the VLANs on which the virtual server for this optimized application receives incoming WAN traffic.
  8. Click Finished.
The system creates a virtual server to handle the specified inbound application traffic. After the iSession listener terminates the connection, the system directs the specified traffic to the virtual server you created. The ability to create more than one application virtual server on the receiving side allows you to apply different profiles to selected application traffic with different destinations.
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