Chapter 16. Managing Networks and Traffic

To configure GSLB in your cloud environment, as a cloud administrator you must first configure a standard load balancing setup for each zone. This enables to balance load across different servers in each zone in the region. Then, configure both the NetScaler appliances that you plan to add to each zone as authoritative DNS (ADNS) servers.

Next, as a domain administrator or user, create a GSLB site for each zone, configure GSLB virtual servers for each site, create GLSB services, and bind the GSLB services to the GSLB virtual servers. Finally, bind the domain to the GSLB virtual servers. The GSLB configurations on the two appliances at the two different sites are identical, although each sites load-balancing configuration is specific to that site.

As per the example given above, the administrator of xyztelco is the one who sets up GSLB. Perform steps 1 through b as a cloud administrator. As a domain administrator or user when you create a GSLB rule and assign load balancer rules on the CloudPlatform side, CloudPlatform orchestrates what is given in c through g.

1.In the cloud.dns.name global parameter, specify the DNS name of your tenant's cloud that make use of the GSLB service.

2.On the NetScaler side, configure GSLB as given in Configuring Global Server Load Balancing (GSLB)1:

a.Configure a standard load balancing setup.

b.Configure Authoritative DNS, as explained in Configuring an Authoritative DNS Service2.

c.Configure a GSLB site with site name formed from the domain name details. Configure a GSLB site with the site name formed from the domain name.

As per the example given above, the site names are A.xyztelco.com and B.xyztelco.com. For more information, see Configuring a Basic GSLB Site3.

d.Configure a GSLB virtual server.

For more information, see Configuring a GSLB Virtual Server4.

e.Configure a GSLB service for each virtual server.

For more information, see Configuring a GSLB Service5.

f.Bind the GSLB services to the GSLB virtual server.

For more information, see Binding GSLB Services to a GSLB Virtual Server6.

g.Bind domain name to GSLB virtual server. Domain name is obtained from the domain details. For more information, see Binding a Domain to a GSLB Virtual Server7.

1http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-config-con.html

2http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-config-adns-svc-tsk.html

3http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-config-basic-site-tsk.html

4http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-config-vsvr-tsk.html

5http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-config-svc-tsk.html

6http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-bind-svc-vsvr-tsk.html

7http://support.citrix.com/proddocs/topic/netscaler-traffic-management-10-map/ns-gslb-bind-dom-vsvr-tsk.html

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Citrix Systems 4.2 manual For more information, see Configuring a Gslb Virtual Server4
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4.2 specifications

Citrix Systems, a leading provider of virtualization solutions and cloud computing technologies, released version 4.2 of its popular software, Citrix XenApp, which was previously known as Presentation Server. This version marked a significant evolution in providing users with remote access to applications and desktops, emphasizing simplicity, performance, and security.

One of the standout features of Citrix XenApp 4.2 is its improved application streaming capabilities. This technology allows applications to be delivered to users in real-time, reducing the need for extensive local installations and enhancing the user experience. With application streaming, administrators can efficiently manage applications on a central server while ensuring that users have immediate access to the necessary tools.

Another highlight of this version is the enhanced security measures put in place to protect sensitive data. Citrix XenApp 4.2 includes support for SSL encryption, providing a secure communication channel for data transmitted between the server and clients. This is particularly crucial for businesses that need to comply with strict data protection regulations. Additionally, the integration of endpoint security features ensures that unauthorized access to applications is minimized.

Performance enhancements are also a critical focus in this release. Citrix optimized the delivery of applications over various network conditions, ensuring that users experience minimal latency regardless of their location. This was achieved through the incorporation of SmartAccess and SmartControl technologies, which allow administrators to set policies based on user roles, device types, and network conditions. This level of granularity enables organization-wide security without compromising on usability.

The user experience was further improved with a revamped interface, making it easier for end-users to access their applications and data. Simplified menus, clear navigation paths, and the ability to customize user settings contributed to a more efficient workflow, allowing users to focus on their tasks rather than struggling with the software.

Finally, Citrix XenApp 4.2 was designed to be highly scalable. Organizations of all sizes could deploy this solution to deliver applications efficiently, adapting to their specific needs as their user base grows or changes. This flexibility is crucial for businesses looking to future-proof their IT investments while maintaining optimal performance.

In summary, Citrix XenApp 4.2 stands out with its enhanced application streaming, robust security features, improved performance under varying conditions, user-friendly interface, and scalability, making it an ideal choice for organizations seeking to leverage virtualization for remote access to applications and desktops.
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