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Release Note: BIG-IP WebAccelerator version 9.4.0
Release Note

Software Release Date: 12/17/2006
Updated Date: 03/06/2007


This release note documents the version 9.4 release of the BIG-IP® WebAccelerator module. To review the features introduced in this release, see New features in this release.


- User documentation for this release
- Supported browsers
- Supported platforms
- Installing the software
- Introducing the BIG-IP WebAccelerator module
- Known issues
- Workaround for known issue

User documentation for this release

In addition to these release notes, the following user documentation is relevant to this release.

You can find the product documentation and the solutions database on the AskF5 Technical Support web site.

Supported browsers

The Configuration utility (graphical user interface) supports the following browsers:

  • Microsoft® Internet Explorer® version 6.x
  • Mozilla® Firefox® version 1.5.x

Important: Popup blockers and other browser add-ons or plug-ins may affect the usability of the Configuration utility. If you experience issues with navigation, we recommend that you disable these types of browser plug-ins and add-ons.

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Supported platforms

This release applies only to the supported platforms listed below; each one provides all minimum system requirements.

  • BIG-IP 6400 (D63)
  • BIG-IP 6800 (D68)
  • BIG-IP 8400 (D84)
  • BIG-IP 8800 (D88)

If you are unsure of which platform you have, look at the sticker on the back of the chassis to find the platform number.

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Installing the software

Important: The installation process for the WebAccelerator module can take up to 20 minutes. If you are installing the WebAccelerator module locally, you can follow the progress on the Management Console.

Important: You cannot install the BIG-IP WebAccelerator module, version 9.4, onto a CompactFlash drive; you must install it onto an HD1.1 or HD1.2.

You manage the installation of the BIG-IP WebAccelerator module through the BIG-IP Local Traffic Manager. For specific instructions about how to install the WebAccelerator module, see Chapter 3, Configuration and Maintenance   in the Administrator Guide for the BIG-IP® WebAccelerator Module  located on the AskF5 Technical Support web site. For information about the BIG-IP Local Traffic Manager, see the BIG-IP Local Traffic Manager version 9.4 and TMOS release notes.

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Introducing the BIG-IP WebAccelerator module

This release introduces the BIG-IP® WebAccelerator module for the BIG-IP Local Traffic Manager. The Web Accelerator module is designed to accelerate web applications by changing the web browser's behavior and interaction with the web application, and reducing traffic to the web application servers by compressing and caching dynamic and static content.

The WebAccelerator module also provides the following benefits.

Pre-defined policies

This WebAccelerator module release includes the following pre-defined policies:

  • BEA AquaLogic (Plumtree® with Collaboration)
  • BEA AquaLogic (Plumtree® without Collaboration)
  • BEA WebLogic®
  • Hyperion Financial
  • IBM WebSphere®
  • IBM Lotus Domino®
  • Microsoft® Internet Information Service (IIS)
  • Microsoft® Outlook Web Access (OWA)
  • Microsoft® Sharepoint Services
  • Oracle® 11i
  • Oracle® JD Edwards ERP
  • Oracle® Peoplesoft
  • Oracle® Portal
  • Oracle® Siebel CRM
  • SAP® Portal
  • Symmetric Deployment
  • Level 1 Delivery
  • Level 2 Delivery

Browser behavior control

Without requiring changes to the browser, the WebAccelerator module ensures that users do not download duplicate content.

Content acceleration

The WebAccelerator module provides content acceleration by:

  • Opening additional simultaneous browser connections
  • Rapid display of PDF documents
  • Accelerating dynamic content
  • Using software compression for web applications
  • Using dynamic and static caching for web applications

Reports and logs

The WebAccelerator module provides:

  • Comprehensive graphs
  • Alerting capability
  • Unified logging for web application hits

Changes in US and Canada Daylight Saving Time

The Energy Policy Act of 2005, which was passed by the US Congress in August 2005, changed both the start and end dates for Daylight Saving Time in the United States, effective March 2007. Canada is also adopting this change. The resulting changes have been addressed in this version of the product software. To find out more about this issue, refer to SOL6551: F5 Networks software compliance with the Energy Policy Act of 2005.

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Known issues

The following items are known issues in the current release.

Using iRules on a BIG-IP system with the WebAccelerator module enabled (CR69429)

When the WebAccelerator module is licensed and enabled on a BIG-IP system, persistence based on JSESSIONID in an iRule does not work properly.

Help and Main tabs on the Policy Editor screen (CR62954)

The Help and Main tabs do not currently display on the Policy Editor screen. F5 Networks plans to include the Help and Main tabs in a future release. For information about the Policy Editor, see the Policy Management Guide for the BIG-IP® WebAccelerator Module.

Processing requests for unmapped hosts (CR66958)

If you configure the WebAccelerator module to process unmapped hosts and then disable this feature, the WebAccelerator module continues to process unmapped hosts. To work around this issue, you must delete the HTTP profile and recreate it. See Deleting and recreating an HTTP class profile in the Workaround for known issues section.

Renaming log formats (CR68098)

When renaming an existing log format, the WebAccelerator module does not return an error message if you use invalid characters or a name that already exists.

Time zone field in the preview log format screen (CR68100)

The preview log format screen currently displays a reference to the time zone. F5 Networks plans to remove this time zone reference in a future release of the WebAccelerator module, since all time zone calculations are performed on the BIG-IP system.

Assigning an HTTP profile (CR69598)

When you assign an HTTP class profile to a virtual server that targets another virtual server, the X-PvInfo response header incorrectly displays two values, rather than one.

Exporting unpublished policies (CR70454)

If you attempt to export an unpublished, development copy of an acceleration policy and incorrectly select Published Policies from the Export menu on the Export Policy screen, the Export Policy screen refreshes without the policy name displayed.

Invalidating specific cached content for applications (CR71137)

If you attempt to configure invalidation for certain cached objects by specifying a URI expression on the Invalidate Content screen, the WebAccelerator system invalidates all of the cached content for the application, rather than the content that you specified.

Performance reports for normalized documents (CR73085)

The Traffic performance report displays inconsistent information for documents that the WebAccelerator module has normalized.

Sorting Content performance reports by content size (CR73086)

The Content performance report currently displays output only alphabetically, and not by content size.

Data displayed for Average Response Time by Transaction performance report (CR73087)

The Average Response Time by Transaction Type data incorrectly displays in the Average Response Time by Content Type performance report.

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Workaround for known issue

The following section describes the workaround for the corresponding known issue listed in the previous section.

Deleting and recreating an HTTP class profile (CR66958)

If you configured the WebAccelerator module to process unmapped hosts and then later disable the feature, you must delete and recreate the HTTP class profile so that the WebAccelerator module does not continue to process unmapped hosts.

To delete the HTTP class profile

  1. On the Main tab of the navigation pane, expand WebAccelerator, and then click Classes.

    The HTTP Class Profile screen opens.

  2. Check the box next to the HTTP class profile that you want to delete.

  3. Click the Delete button.

    The Confirm Delete screen opens.

  4. Click the Delete button.

    The HTTP Class Profiles screen refreshes and the HTTP class profile that you deleted is removed.

To recreate an HTTP class profile with the WebAccelerator module enabled

  1. On the Main tab of the navigation pane, expand WebAccelerator, and then click Classes.

    The HTTP Class Profile screen opens.

  2. Click the Create button.

    The New HTTP Class Profile screen opens.

  3. In the Name box, type a name for the HTTP class profile.

  4. From the Parent Profile list, select httpclass.

  5. In the Configuration section, verify that WebAccelerator is set to Enabled. Leave all other settings at Match all.

  6. Click the Finished button.

    The system adds the new HTTP class profile and displays the HTTP Class Profiles screen.

Note: The HTTP class profile exists in both the WebAccelerator and the Local Traffic sections of the Configuration utility. The difference between the two is that in the WebAccelerator section of the Configuration utility, the WebAccelerator system is enabled by default. In the Local Traffic section of the Configuration utility, you must check the Custom check box and explicitly enable the WebAccelerator module. If you create the HTTP class profile from the Local Traffic menu and you do not enable the WebAccelerator module, you effectively disable web acceleration for the associated virtual server.

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