Designing Enterprise Campus Networks © 2004 Cisco Systems, Inc. All rights reserved. Designing the Server Farm ARCH v1.22-1

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Design Requirements Performance –Provide up to 10 Gbps outbound bandwidth capacity Scalability –Requires scalable switches and server load balancing Availability –Provide redundancy and failover at the physical, data-link, and network layers Security –Requires specialized expertise Manageability –Requires tools and a specialized network operations center support system

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Design Considerations Locality of access (single or multiple site) Number of applications Data volumes (small, medium, large) Transaction frequencies (seldom to often) Control of access points to the Server Farm module

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Infrastructure Architecture

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Campus Backbone Deploy high-end switches. Implement redundant switching and links. Implement web cache redirection. Implement HSRP. Implement intrusion detection.

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Distribution Layer Deploy high- to mid-range switches. Make switching and links entirely redundant. Deploy caching systems. Implement server load balancing. Implement server content routing (for distributed server farms).

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Access Layer Deploy midrange switches. Dual home all servers.

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Options for Performance and Scalability Increase port density. Add higher-speed interfaces. Consider the STP implementation.

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Increasing Scalability for the Entire Server Farm Scalable access module supports high throughput of traffic and delivery into the Server Distribution submodule. Single Layer 2 domain allows spanning of IP subnets. Highly modular Highly available Highly secure

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Security Considerations Physical and network security policies Physical security devices Security software implementation Security architecture

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Server Farm Manageability Considerations Identify critical devices and applications. Create an operations and support plan. Implement 24x7 monitoring of servers and network equipment. Implement problem resolution procedures. Create a business continuity plan in case of natural disaster.

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Summary The primary objectives in the design of an enterprise Server Farm (or data center) are performance, scalability, availability, security, and manageability. The enterprise Server Farm module may contain an access layer and a distribution layer, similar to the Campus Infrastructure module, and connected to the Campus Backbone submodule. Every Server Farm module must provide scalability. The Server Farm module design has important security and manageability considerations.

© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Learning Activities Case Study: OCSIC Bottling Company –Create initial network diagrams –Design the headquarters campus network –Design the headquarters server farm –Design a typical North American plant network (optional) –Provide justification for each design decision OPNET IT Guru Simulation –View the instructor demonstration and consider the key design questions