Close
  • Latest News
  • Artificial Intelligence
  • Big Data and Analytics
  • Cloud
  • Networking
  • Cybersecurity
  • Applications
  • IT Management
  • Storage
  • Sponsored
  • Mobile
  • Small Business
  • Development
  • Database
  • Servers
  • Android
  • Apple
  • Innovation
  • Blogs
  • PC Hardware
  • Reviews
  • Search Engines
  • Virtualization
Read Down
Sign in
Close
Welcome!Log into your account
Forgot your password?
Read Down
Password recovery
Recover your password
Close
Search
Logo
Logo
  • Latest News
  • Artificial Intelligence
  • Big Data and Analytics
  • Cloud
  • Networking
  • Cybersecurity
  • Applications
  • IT Management
  • Storage
  • Sponsored
  • Mobile
  • Small Business
  • Development
  • Database
  • Servers
  • Android
  • Apple
  • Innovation
  • Blogs
  • PC Hardware
  • Reviews
  • Search Engines
  • Virtualization
More
    Home Latest News
    • Networking

    Big-IP Delves Deep Into Data

    By
    Cameron Sturdevant
    -
    January 13, 2003
    Share
    Facebook
    Twitter
    Linkedin

      F5 Networks Inc.s Big-IP 4.5 joins a growing list of products that offer to move security, high availability, and other connection and user decisions away from servers and applications and into special-purpose appliances. As eWeek Labs tests of Big-IP 4.5 show, this approach makes sense. Big-IP let us discard “bad” traffic or send it to a monitor port.

      Furthermore, the products new Universal Inspection Engine is impressive enough to justify further examination by IT managers who are thinking strategically about the effect Web services will have on their networks performance.

      In tests, Universal Inspection Engine allowed us to extend load balancing functions, such as maintaining a persistent connection to an application server based on information we put in the data payload of our IP traffic.

      We used iRules, another new Big-IP feature, to determine how the product should treat IP packets. These rules let us manipulate traffic streams at a fine level. IT managers should allocate senior network and application staff to work as a team to set up iRules because there are few pre-built functions for examining many common applications. With the help of F5, for example, we built a simple rule that looked for short strings in an IP packet. If the string matched one of the conditions, then the packet was sent to the pool of servers on the test network. Otherwise, the IP address was logged, and the packet was discarded.

      Writing effective iRules will likely get easier as F5 expands the number of application-specific functions provided with the product. As Big-IP 4.5 stands today, there are only a handful of capabilities for several products, including BEA Systems Inc.s BEA WebLogic Server, along with one for Session Initiation Protocol, a protocol that will likely play a big part in future voice-over-IP applications.

      In the meantime, Big-IP 4.5 users can get the same capabilities by writing compound rules. These rules can be saved, but they cannot be used in other rules, which is the advantage of such functions.

      It is also clear from testing that Big-IP 4.5, which is available now for $43,990 when shipped on redundant F5 Big-IP 2400 application switches, is a first-generation product. In our first round of tests, for example, Universal Inspection Engine didnt actually sort the test packets created by our Ixia traffic generator. (We used the Ixia IXWeb application running on LM100TX cards to generate the Layer 7 traffic that was crucial in testing the Big-IP 4.5 product.) A patch supplied by F5, which is now part of the shipping version of the product, corrected the problem.

      IT managers should think carefully about how Web services might affect their networks in two or three years. From that vantage point, Big-IP 4.5 is built for the future: Its capabilities move beyond filtering and connection persistence found in load balancers currently on the market. We expect competitors including Cisco Systems Inc. and Foundry Networks Inc. will work to match these capabilities.

      Big-IP 4.5 could filter test traffic on the basis of any information in an IP packet. This puts it a step ahead of traditional load balancers, which are limited to filtering by cookie, HTTP header or other well-understood Web application traffic.

      It also means that Big-IP 4.5 can see and understand the data in protocols such as XML and SQL. Because these and other IP protocols are likely to be used extensively in Web services, we expect more vendors to add this functionality to their traffic management tools.

      As more load balancing products gain these advanced features, we expect to see network managers working more closely with other parts of the IT organization, including application and system managers, to devise a cooperative strategy that allows appropriate access to applications while shunting undesirable traffic as soon as it hits the network.

      Aside from devoting several high-value people to code the iRules, most IT departments will not have to add much to the budget to maintain the systems. In particular, departments that already use F5 equipment and software should have no trouble incorporating this latest version of the product into their daily operations. We used the Web-based interface to configure and maintain our Big-IP 4.5 systems without a fuss.

      The concept of virtual servers, pools and nodes are still part of the product. We used the GUI to configure two virtual servers that filtered traffic to three pools of servers. IT managers should have little trouble accommodating network configurations that include network address translation and proxy servers.

      Along with other management functions that should be familiar to current users of Big-IP software, we used the monitors to make sure that the servers in our network were up and running before sending them traffic. We customized monitors to look for specific (and rather esoteric) services to be available while we were running tests. Big-IP consistently recognized when applications such as FTP were no longer available and stopped sending traffic to those servers, even during heavily loaded test runs. As in previous versions of the product, monitors can be strung together to ensure that all necessary services are running before traffic is sent.

      F5 also made an incremental change to the hardware it uses to host Big-IP 4.5, including the 2400 application switch we used in tests. New application-specific integrated circuits provide enhanced traffic handling for Layer 7 (application) traffic. F5 calls this new capability Packet Velocity, and we had no trouble using the new hardware to handle test traffic.

      Senior Analyst Cameron Sturdevant is at cameron_sturdevant@ziffdavis.com.

      Executive Summary

      : Big-IP 4.5″>

      Executive Summary: Big-IP 4.5

      Usability

      Fair

      Capability

      Excellent

      Performance

      Excellent

      Interoperability

      Good

      Manageability

      Good

      Scalability

      Good

      Security

      Excellent

      The latest version of F5s load balancing software can now examine any part of an IP packet to make connection persistence and filtering decisions. IT managers who are mulling over the two- to four-year impact of Web services on network performance and security should consider the new features of Big-IP 4.5, which raise the bar for load balancing appliances.

      COST ANALYSIS

      There are no two ways about it: Implementing Big-IP 4.5 is going to take more than a little consulting and some of the best networking and applications staff at the organization. However, once these experts craft the rules that determine how Big-IP should treat incoming traffic, ongoing maintenance should be fairly low.

      (+) Filtering and persistence decisions can be made on any data in an IP packet; nimble operation.

      (-) Few built-in functions means lots of hand-coding; Version 1 bugs remain.

      EVALUATION SHORT LIST

      • Ciscos Local Director
      • Foundrys ServerIron
      • Resonate Inc.s Central Dispatch
      • www.f5.com
      Cameron Sturdevant
      Cameron Sturdevant is the executive editor of Enterprise Networking Planet. Prior to ENP, Cameron was technical analyst at PCWeek Labs, starting in 1997. Cameron finished up as the eWEEK Labs Technical Director in 2012. Before his extensive labs tenure Cameron paid his IT dues working in technical support and sales engineering at a software publishing firm . Cameron also spent two years with a database development firm, integrating applications with mainframe legacy programs. Cameron's areas of expertise include virtual and physical IT infrastructure, cloud computing, enterprise networking and mobility. In addition to reviews, Cameron has covered monolithic enterprise management systems throughout their lifecycles, providing the eWEEK reader with all-important history and context. Cameron takes special care in cultivating his IT manager contacts, to ensure that his analysis is grounded in real-world concern. Follow Cameron on Twitter at csturdevant, or reach him by email at cameron.sturdevant@quinstreet.com.
      Get the Free Newsletter!
      Subscribe to Daily Tech Insider for top news, trends & analysis
      This email address is invalid.
      Get the Free Newsletter!
      Subscribe to Daily Tech Insider for top news, trends & analysis
      This email address is invalid.

      MOST POPULAR ARTICLES

      Latest News

      Zeus Kerravala on Networking: Multicloud, 5G, and...

      James Maguire - December 16, 2022 0
      I spoke with Zeus Kerravala, industry analyst at ZK Research, about the rapid changes in enterprise networking, as tech advances and digital transformation prompt...
      Read more
      Applications

      Datadog President Amit Agarwal on Trends in...

      James Maguire - November 11, 2022 0
      I spoke with Amit Agarwal, President of Datadog, about infrastructure observability, from current trends to key challenges to the future of this rapidly growing...
      Read more
      Cloud

      IGEL CEO Jed Ayres on Edge and...

      James Maguire - June 14, 2022 0
      I spoke with Jed Ayres, CEO of IGEL, about the endpoint sector, and an open source OS for the cloud; we also spoke about...
      Read more
      IT Management

      Intuit’s Nhung Ho on AI for the...

      James Maguire - May 13, 2022 0
      I spoke with Nhung Ho, Vice President of AI at Intuit, about adoption of AI in the small and medium-sized business market, and how...
      Read more
      Applications

      Kyndryl’s Nicolas Sekkaki on Handling AI and...

      James Maguire - November 9, 2022 0
      I spoke with Nicolas Sekkaki, Group Practice Leader for Applications, Data and AI at Kyndryl, about how companies can boost both their AI and...
      Read more
      Logo

      eWeek has the latest technology news and analysis, buying guides, and product reviews for IT professionals and technology buyers. The site’s focus is on innovative solutions and covering in-depth technical content. eWeek stays on the cutting edge of technology news and IT trends through interviews and expert analysis. Gain insight from top innovators and thought leaders in the fields of IT, business, enterprise software, startups, and more.

      Facebook
      Linkedin
      RSS
      Twitter
      Youtube

      Advertisers

      Advertise with TechnologyAdvice on eWeek and our other IT-focused platforms.

      Advertise with Us

      Menu

      • About eWeek
      • Subscribe to our Newsletter
      • Latest News

      Our Brands

      • Privacy Policy
      • Terms
      • About
      • Contact
      • Advertise
      • Sitemap
      • California – Do Not Sell My Information

      Property of TechnologyAdvice.
      © 2022 TechnologyAdvice. All Rights Reserved

      Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.

      ×