Layer 2-7 High Availability Deployment Guide - Force10 Networks

More documents

Recommendations

Info

4 Introduction Citrix® NetScaler® optimizes the delivery of web applications— increasing security and improving performance and Web server capacity. This approach ensures the best total cost of ownership (TCO), security, availability, and performance for Web applications. The Citrix NetScaler solution is a comprehensive network system that combines high-speed load balancing and content switching with state-of-the-art application acceleration, Layer 4-7 traffic management, data compression, dynamic content caching, SSL acceleration, network optimization, and robust application security into a single, tightly integrated solution. Deployed in front of application servers, the system significantly reduces processing overhead on application and database servers, reducing hardware and bandwidth costs. To help ensure application availability, NetScaler delivers fine-grained direction of client requests to ensure optimal distribution of traffic. In addition to Layer 4 information (protocol and port number), traffic management policies for TCP applications can be based upon any application-layer content. Administrators can granularly segment application traffic based upon information contained within an HTTP request body or TCP payload, as well as L4-7 header information such as URL, application data type or cookie. Numerous load-balancing algorithms and extensive server health checks provide greater application availability by ensuring client requests are directed only to correctly behaving servers. With the confidence that Citrix will keep your Applications online and servicing your clients, you may want to be assured that your Layer 2-3 Infrastructure is built for Business Continuity as well. Many pioneering advancements have been made in Layer 2-3 switching/routing in both software and hardware features for redundancy and high availability. Force10 Networks makes full use of these advancements in their product set for both Enterprise and Service Provider class switch/routers. With VLAN features standardized by IEEE in 802.1q specifications and Layer 3 routing protocols collapsed into switching platforms, organizations can take full advantage of the consolidation paradigm. As enterprises and service providers move toward the path of consolidation, they will continue to look for ways to guarantee Business Continuity for their customer base at higher layers on the OSI stack. Citrix NetScaler provides this through a High Availability pair, and is easy to configure through the NetScaler GUI. The Citrix NetScaler serves as the Layer 4-7 switch accepting incoming traffic from an untagged VLAN from the external network, and switching it back to the appropriate server farm on the backend. The Layer 2-3 switch/routers, running VRRP, serve as conduits for 802.1q VLANs, Trunks, VRRP Protocol, and Inter-VLAN routing using industry standard OSPF. Combining software and hardware redundant features at Layer 2-3 with Citrix NetScaler Layer 4-7 High Availability ensures that all the network layers are covered in your datacenter to ensure uptime and business continuity, while you consolidate resources to do more with less. This deployment guide walks through the configuration details of how to configure the Citrix NetScaler and Layer 2-3 switch/router to provide this type of integration and high availability.
Prerequisites • • • Citrix NetScaler L4/7 Application Switch, running version 8.0+, Quantity x 2 for HA deployment. Force10 L2/3 switch/routers, w/support for 802.1q Tagging & Trunking, VRRP, OSPF. Quantity x 4 Client laptop/workstation running Internet Explorer 6.0+. 5
Page 1 and 2: Deployment Guide Layer 2-7 High Ava
Page 3: Table of Contents Introduction ....
Page 7 and 8: Secondary L2/3 F10-1 E600 VLAN 97 V
Page 9 and 10: If you have two Application Switche
Page 11 and 12: 4c) Both Primary and Secondary must
Page 13 and 14: Important NetScaler IP Addresses Ac
Page 15 and 16: Configuring the Virtual MAC The Vir
Page 17 and 18: Before HA Failover L2/3 E600 VLAN 9
Page 19 and 20: Note: Refer to the NetScaler Applic
Page 21 and 22: ind vlan xxx -ifnum 1/3 -tagged bin
Page 23 and 24: Appendix B - Layer 2/3 Switch/Route
Page 25 and 26: interface Vlan xxx ip address 10.1.
Page 27 and 28: ip address 172.21.1.254/24 secondar
Page 29: About Citrix Citrix Systems, Inc. (

Layer 2-7 High Availability Deployment Guide - Force10 Networks

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?