Updated Date: 06/07/2009
This release note documents the version 10.0.1 release of the WAN Optimization Module. For information about installing the software, refer to Installing the software.
In addition to these release notes, the following user documentation is relevant to this release.
The following BIG-IP system documentation is also relevant to this release:
You can find the product documentation and the solutions database on the AskF5 Technical Support web site.
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Note: F5 Networks recommends that the BIG-IP platform on which you plan to provision the WAN Optimization Module has a minimum of 4 GB of RAM.
The supported browsers for the Configuration utility and BIG-IP Dashboard are:
Note: F5 Networks recommends that you leave the browser cache options at the default settings.
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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This release supports the following platforms:
If you are unsure of which platform you have, refer to the sticker on the back of the chassis, which displays the platform number.
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This section lists only the very basic steps for installing the BIG-IP software, which includes the WAN Optimization Module. The BIG-IP® Systems: Getting Started Guide contains details and step-by-step instructions for completing an installation. F5 Networks recommends that you consult the getting started guide for all installation operations.
If the software is already installed on your hardware platform, refer to Chapter 3, Configuring WAN Optimization for the First Time in the Configuration Guide for the BIG-IP® WAN Optimization Module.
The steps in this section assume that:
Installation consists of the following steps.
After the installation finishes, you must complete the following steps before the system can pass traffic.
Each of these steps is covered in detail in the BIG-IP® Systems: Getting Started Guide, and F5 Networks recommends that you refer to the guide to ensure successful completion of the installation process.
The upgrade process installs the software on the inactive installation location that you specify. This process usually takes between three minutes and seven minutes. During the upgrade process, you see messages posted on the screen. For example, you might see a prompt asking whether to upgrade the End User Diagnostics (EUD), depending on the version you have installed. To upgrade the EUD, type yes, otherwise, type no.
You can check the status of an active installation operation by running the command b software status.
If installation fails, you can view the log file. For image2disk installations, the system logs messages to the file you specify using the --t option. For other installations, the system stores the installation log file as /var/log/liveinstall.log.
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How you upgrade from earlier versions depends on the version of software you have.
When you upgrade from software version 9.6.x or earlier 10.x versions, you can use the Software Management screens in the Configuration utility to complete these steps. To open the Software Management screens, in the navigation pane of the Configuration utility, expand System, and click Software Management. For information about using the Software Management screens, see the online help, or the relevant chapters in the BIG-IP® Systems: Getting Started Guide.
If you plan to install this version of the software onto a system running 9.3.x or 9.4.x, you must perform a one-time upgrade procedure to make your system ready for the new installation process. When you update from software version 9.3.x or 9.4.x to 10.x, you cannot use the Software Management screens in the Configuration utility. Instead, you must run the image2disk utility on the command line. For information about using the image2disk utility, see the BIG-IP® Systems: Getting Started Guide.
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Dashboard enhancements and fixes (CR102375, CR102377, CR116990, CR116991, CR116992, CR117115, CR119978)
The Dashboard now correctly displays data that was previously inaccurate, unavailable, or incorrectly formatted.
TCP profile congestion control settings (CR113431)
In the previous release, in a TCP profile, the Packet Loss Ignore Rate and Packet Loss Ignore Burst settings, which perform congestion control, did not work. They are now operational.
TCP Profile Verified Accept setting for optimized connections (CR115565)
In a TCP profile, the Verified Accept setting ensures that the system can communicate with the server before it establishes a client connection. This setting now works fine on optimized traffic as well as Local Traffic Management.
Invalid segment message (CR115805, CR116445)
The system no longer issues an Invalid Segment message in the tmm.log while performing data deduplication.
Disable SMB signing to optimize CIFS traffic (CR116389)
The section Optimizing CIFS traffic in the Configuration Guide for the BIG-IP® WAN Optimization Module, version 10.0.0, does mention that you need to disable SMB signing on all servers with CIFS shares, or establish a security policy to disable SMB signing on the domain server, if you want to optimize CIFS traffic.
Improved performance for single connections (CR116411-1)
This iSession enhancement improves throughput in networks with a small number of connections.
Hardware compression enabled (CR116533)
With the previous version, in iSession Symmetric Adaptive Compression, software compression was overriding hardware compression on the BIG-IP 6900 and 8900 platforms. Hardware compression is now fully enabled, thus improving throughput.
Symmetric data deduplication mode changes (CR118501-1)
By default, symmetric data deduplication uses the disk (as well as memory) to store information that is used later for optimization. You can change the deduplication mode using the Mode setting on the Local Endpoint - Advanced screen, or using a command on the command line: b datastor disk usage enable (or disable). Previously, the system did not warn you that you needed to restart datastor. Now, if you change the duplication mode in the user interface, the system automatically restarts TMM and the datastor service. If you change this setting on the command line, the man page now warns you that you need to restart the datastor service using the command bigstart restart datastor.
Volume Management: Datastor to use both disks (CR118837)
The Symmetric Data Deduplication volume can now span disks on the BIG-IP system, providing more disk cache for Symmetric Data Deduplication and improving disk performance.
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The Dashboard is a graphical interface that you use to monitor system statistics. On the Performance Overview screen, you can view overall statistics for the system, including CPU and memory usage, the number of connections, and system throughput. You can view details about the WAN Optimization Module on the WAN Optimization screen.
Dynamic Discovery is a process through which the WAN Optimization Module identifies and adds remote endpoints automatically, saving configuration time.
The WAN Optimization Module employs adaptive TCP optimization to speed up traffic using techniques such as session-level application awareness, persistent tunnels, selective acknowledgements, error correction, and optimized TCP windows.
Symmetric Data Deduplication
Symmetric Data Deduplication uses references to previously transmitted data to reduce the amount of bandwidth it takes to transfer data over the WAN.
Symmetric Adaptive Compression
Symmetric Adaptive Compression compresses data through the use of dictionary-based compression and advanced encoding schemes.
The WAN Optimization Module can optimize Common Internet File System (CIFS) traffic, resulting in faster performance during file transfer, when downloading or saving files, when opening Microsoft applications, and when browsing directories on networked drives.
The WAN Optimization Module can optimize MAPI (Messaging Application Program Interface) traffic to reduce the amount of bandwidth required to transfer email traffic over the WAN.
The WAN Optimization Module supports deployments where one or both of the BIG-IP systems are behind a Network Address Translation (NAT) router.
Web Cache Communication Protocol (WCCP) is available in the Network section of the navigation pane when the WAN Optimization Module is provisioned. The BIG-IP system supports WCCP version 2. You can use the WCCP feature in a deployment where the WAN Optimization Module is located out-of-path, that is, not inline. The benefit is that if the device fails, the WCCP feature automatically bypasses the failed device.
TOS/DSCP bits preserved
The WAN Optimization Module preserves Type of Service (TOS) priorities or Differentiated Services Codepoint (DSCP) values for traffic moving through the tunnel.
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Active FTP data connections not optimized (CR108811)
In this release, the WAN Optimization Module does not support optimizing Active FTP connections. If you attempt to optimize Active FTP traffic, the system optimizes only the control connection, not the data connection.
Traffic blocked if self IP Port Lockdown is set to Allow Default (CR109093)
If you are using a self IP address for the WAN Optimization Module and the Port Lockdown setting of the self-IP address on the server-side endpoint is set to Allow Default (the default value), certain types of TCP and UDP traffic are blocked; for TCP: SSH, domain, SNMP, HTTPS, and 4353; and for UDP: domain, SNMP, EFS, 1026, and 4353. You must set the self IP address to Allow None (the command line default) to successfully optimize all types of traffic.
No warning when advertised routes conflict with remote routes (CR109097)
The system does not log a warning if local advertised routes conflict with advertised routes on remote endpoints. Having two systems with conflicting routes is most likely a configuration error.
Using Dashboard with Internet Explorer 6 (CR109099)
When using Internet Explorer 6 to display the Dashboard, the system may display a message about mixed https and http on the page. This is a known issue in version 6, and Microsoft has fixed it in Internet Explorer 7. You may ignore the message. All communications remain secure.
Disabling all compression settings on iSession profile (CR111261)
When creating an iSession profile, you need to enable at least one compression setting. If you inadvertantly create an iSession profile with all compression settings disabled, you may receive a warning when you associate the profile with a virtual server that states that Method null must be enabled if all other methods are disabled. The message means if you do not want compression to occur on connections, you must enable the Null compression setting on both the local and remote endpoints. In any case, at least one compression setting must be the same on both the local and remote endpoints (even if it is Null) for any connections to be established between them.
Dashboard Overview CPU table view missing state for some CPUs (CR 113126, CR117070)
When you look at the table view of the CPU panel of the dashboard, state information may be missing for some CPUs. This occurs because more than one CPU on a multicore system share a fan and thermometer, and the system reports the status for only one of the CPUs.
Compression configuration changes may require clearing RAM cache (CR114972)
If you change the compression or deduplication options for the iSession profile on a BIG-IP® system that is running both the WAN Optimization Module and the WebAccelerator system, you must also clear the RAM cache from the command line. To clear the RAM cache, use the b profile http <http profilename> ramcache entry all delete command. If you do not clear the RAM cache after changing these options, the WebAccelerator system may not accelerate the HTTP traffic as expected.
Disabling local endpoint on receiving side WAN Optimization Module (CR114939)
If you disable the local endpoint on the receiving (server) side WAN Optimization Module, the systems may continue to optimize traffic. You need to disable the local endpoint on the initiating (client) side to stop optimizing traffic between the two endpoints.
Disable Address Translation for virtual servers optimizing traffic (CR115250)
If you use the command line or Local Traffic Manager to create a virtual server that optimizes traffic and the virtual server has a Destination setting of type Host, the Address Translation setting defaults to Enabled. We recommend that you disable Address Translation for virtual servers optimizing traffic. If you create optimization policies (virtual servers) from the WAN Optimization screens, the Address Translation setting is automatically set to Disabled.
Manually changing the system time may affect deduplication (CR115749)
If you manually change the system time to an earlier time using a method other than Network Time Protocol (NTP), some WAN Optimization services related to data deduplication may restart. If you are optimizing traffic, you may want to use NTP to synchronize the BIG-IP system time rather than manually changing it at the command line.
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Contacting F5 Networks
For additional information, please visit http://www.f5.com.