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Citrix NetScaler 9.3.e


NetScaler 9.3.e is an enhancement branch of the 9.3 release. Like NetScaler 9.3, NetScaler 9.3.e meets this challenge by delivering a service delivery architecture that enables consolidation of adjacent services, like desktop delivery, data optimization, application visibility, network bridging and identity management.

Key New Features:

  • Database load balancing for Oracle MySQL and Microsoft SQL
  • AppFlowTM – open, IPFIX standards-based application flow visibility
  • New dynamic XenDesktop/XenApp health monitors
  • Load balancing for Branch Repeater
  • Application Firewall signatures
  • OpenCloud Bridge

Citrix NetScaler® OpenCloud Bridge™ feature is a tool used to build a cloud-extended data center leveraging a layer-2 network bridge that connects a premise datacenter to a cloud.  In this release, OpenCloud Bridge relies on Generic Routing Encapsulation (GRE) protocol and IPSec support.  The GRE protocol provides a mechanism for encapsulating packets from a wide variety of network protocols to be forwarded over another protocol.  In the OpenCloud Bridge scenarios, WAN optimization can be combined with GRE to optimize the WAN traffic to the cloud.

In addition, here are the new features that have been included with these 9.3.e builds.

  • Ability to flush surge queue without disabling service
  • “show cs vserver” output should list policies by priority instead of bind order
  • Allow ICMP fragments for ECHO request and response.
  • Ability to customize string that would match through a policy.  Customserverid persistence to be string vs an integer.
  • Forwarding sessions support
  • Ability to use specified source IP for backend communication (Network Profile) support


Content Switching
When you run the ‘show cs vserver’ command, you can now view the content switching policies associated with the virtual server in the order of the
priority of the policies rather than by the chronological order in which they are bound. This enhancement can help you know the order in which the content switching polices are applied and therefore, understand how client requests are routed. The configuration utility also shows the content switching policies in the order of their priority.  For more information, see the “Viewing the Properties of Content Switching Virtual Servers” section in the Content Switching chapter of the Citrix NetScaler Traffic Management Guide, available at


Now you can enable a NetScaler appliance to forward all the ICMP fragments of an ICMP echo request, destined to a network device, and the ICMP fragments of the corresponding echo response. One of the examples where this enhancement is useful is a scenario including a NetScaler appliance and a Windows 2000 Server. The Windows 2000 server sends out ICMP request of size 2048 for slow link detection. The NetScaler appliance successfully forwards the ICMP fragments of the ICMP request to the destined network device and the ICMP fragments of the ICMP response from the network device to the Windows 2000 server.

Surge Protection
If you want to flush the surge queue of a service, service group, or a load balancing or content switching virtual server, now you do not need to disable
the NetScaler entity. With this enhancement, you can manage the traffic in surge conditions without affecting the existing traffic.
Options are added to the command line interface and configuration utility to flush a surge queue. Flushing a surge queue does not affect the existing
connections. Only the requests present in the surge queue get deleted. For those requests, the client has to make a fresh request.
When you flush the surge queue of a virtual server, the surge queues of all the services and service groups bound to it are flushed. When you flush the surge
queue of a service group, surge queues of all its members are flushed. You can flush the surge queue of one or more members of a service group without
flushing the surge queues of all its members. You can flush the surge queue of a specific service. In the configuration utility, when you select an entity the ‘Flush Surge Queue’ option is available in the action pane. In the command line interface ‘flush ns surgeQ’ option is added with necessary options.
For more information, see the “Flushing the Surge Queue” section in the Load Balancing chapter of the Citrix NetScaler Traffic Management Guide, available at

Download Citrix NetScaler 9.3.e here (require myCitrix)

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