It's official! Netscaler emerged as the leading solution for the next generation before terminating service and Content Delivery Networks (RSD / CDN).
With the increasing number of web applications, the overall dispersion of users of the application, and will centralize data centers, severe limitations of the legacy layer-4 load balancers and ability to provide the end user a satisfactory experience has become an important issue.
service and content delivery solutions, such as Citrix NetScaler, overcome these limitations and solves the end user experience problem by providing rich traffic management features that can actually accelerate application delivery Web through the use of several optimization techniques and acceleration.
Citrix NetScaler combines the overall management of L4-7 traffic, application acceleration, compression, caching, and security applications in a single integrated device. In addition to accelerating the performance of web applications, the NetScaler allows enterprises and government IT organizations to scale their application infrastructure to reduce operating and capital costs. The Netscaler offers a much more reliable application availability to all users, while reducing the number of servers required to deliver content on the backend.
features and functions With the latest firmware version, Citrix software engineering and development teams combined. Netscaler put the top of the list for the best of breed solutions in the market space RPS / CDN
Some of these features / functions include:
- AppFw download Automatic signature and implementation update
Jumbo frames
NetScaler gateway SPDY
Mobile MPTCP
Kerberos support for MSSQL
VIP Spotted support for clustering
SAML 2 AAA-TM factor authentication
political expression Advance Diameter
Access Gateway plug-in for Windows 8 (32-bit and 64-bit)
Enterprise ready Clustering Phase 2
- rate Limiting
Analytics action
IP-IP tunneling
overflow Bandwidth based
Transport Level Security 1.1 and 1.2 protocol support
Ability to restrict the root CA Distinguish Name
increased load limit Balancing session 10million
integration Application Firewall IBMTM AppScan ©
integration Firewall application Whitehat
DataStream caching for stored procedures
HTTP callout - IPv6 support, HTTPS support
AppTemplate improved to multiple endpoints
SNIP as a source for AppFlow exporter
traffic areas multi - -tenancy in the unit
NAT46 support for IPv4 to IPv6 transition
IPv6 compliance improvements
AutoScale improvement with CloudPlatform
SDX improvements
- Interface naming
SNMP v3 support
management Password
Note: Support for Jumbo frames is due for release in late 2013.
More employees than ever before want to access their applications and data that will make them productive when they are away from the office. This is the conduct of mobility solutions to the top of the list of priorities for enterprise-wide organizations.
Some specific characteristics that Netscaler Mobility brings to market include support for MPTCP, TCP Westwood and SPDY.
Multipath TCP (MPTCP)
MPTCP is an extension of TCP / IP protocol that identifies and uses several available paths between hosts to keep the TCP session. You need JavaScript MPTCP on a TCP profile and link it to a virtual server on the Netscaler. MPTCP When enabled, the virtual server functions as a gateway and converts MPTCP MPTCP client connections to TCP connections it has with the servers.
This means that if you broadcast the video on your mobile device through a public wifi network and wifi is congested and things slow down, the Netscaler can open a connection via WiFi network and the mobile cellular network and use two connections simultaneously. The protocol puts the intelligence in the Netscaler to know that two separate connections are actually coming from the same user.
This ensures a more efficient connection and provides a better experience for the end user, because MPTCP offers greater resilience and availability than standard TCP since the application session is not lacking if a link fails .
TCP Westwood
the NetScaler appliance also supports TCP Westwood of congestion avoidance algorithm. You can enable this algorithm by setting the Westwood option for Flavor parameter when configuring TCP profiles on the Netscaler.
TCP Westwood (TCPW), which is a newer TCP, uses a modification process transmitter side of the control scheme of the congestion window. TCPW command window using the estimate to-end speed in a way that is totally transparent to the routers and the destination. This makes it compatible with a network and TCP application. What it does is to estimate continuously at the TCP sender, the connection speed by controlling the packet reception rate ACK. The estimated connection rate is then used to calculate the congestion window and the slow start threshold after a congestion episode. Resetting the window to match the available bandwidth makes TCPW more robust sporadic losses due to wireless channel conditions.
SPDY
SPDY, pronounced quickly, is an open network protocol provides a means to transport more efficiently Web content. It was primarily developed by Google. The overall objective of SPDY is to reduce web page load times. This is accomplished using a single TCP connection per domain and using compression to reduce latency. SPDY also uses interlaced resource requests which are then prioritized in the resources.
SPDY does not replace HTTP, but it changes the way the HTTP requests and responses are sent over the network. This means that any existing server-side applications can be used without modification if a translation layer SPDY-compatible is set up
Conclusion
Citrix NetScaler appliance ensures the performance and availability of Web applications while optimizing network resources and securing data center assets. The NetScaler combines several functions into one platform that helps businesses reduce network complexity and operational costs.
For additional white papers on the comparative advantages of Citrix NetScaler, click here. "
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