 Wide Area NetworkingNetwork World's Wide Area Networking Newsletter, 07/03/07When apps are slow, net managers are wrong until proven rightBy Steve Taylor and Jim MetzlerIn a series of recent newsletters (see the list at the end of this newsletter), we’ve discussed the fact that the Mean Time to Repair (MTTR) application performance issues can be quite lengthy and we described some of the reasons why. Given the number of responses that we’ve received, it is clear that we struck a cord with a number of readers. One reader responded that the newsletters were relevant to her because her organization had just spent an entire frustrating week troubleshooting one enterprise application. She noted that the root cause of the problem was never isolated but that a reboot of the three relevant Web servers ultimately resolved the problem. While she was glad that her organization eventually resolved the problem, she expressed understandable concern about the process that took place. The way she described it, the application and server teams insisted the problem was the network, and of course her organization had to prove the network was not the issue before those organizations would consider looking at their components. As we pointed out previously, the amount of time that the network organization has to spend proving that the network is not at fault before the rest of IT gets involved in troubleshooting is one of the factors that lengthen the MTTR application performance issues.
Our reader went on to say that they were running NetQoS’s SuperAgent and Reporter Analyzer, as well as NetVoyant, and that these tools showed that nothing on the network was outside of its normal long term baselines. They also had vendors such as AT&T confirming that they had an error-free environment. In spite of all of that, they still had a very difficult time convincing the other teams that the network was not at fault, even when SuperAgent clearly pointed to the application server tier as the source of the problem. She concluded by saying that it makes her feel sad and defeated to think that the investment and effort that her organization has made in deploying monitoring tools was being devalued because not one person outside of the network team believes in and takes much consideration of the data. She ended on an optimistic note: “Momentum is slowly moving in our direction and this amazes me as our tools, visibility and transparency are light years beyond what any other group is doing.” What really struck us about what this reader had to say was certainly not the fact that within her IT organization the network is assumed to be the source of all application performance problems. That is the case all too often. What struck us was that even though her group has far better insight into the causes of potential problems, they are systematically ignored. This is definitely an issue that we will be coming back to. Further reading: Don’t assume application performance problems are always network-related; What makes application management so hard to do?; NOCs now in charge of application management.
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| Contact the author: Steve Taylor is president of Distributed Networking Associates and publisher/editor-in-chief of Webtorials. For more detailed information on most of the topics discussed in this newsletter, connect to Webtorials, the premier site for Web-based educational presentations, white papers, and market research. Taylor can be reached at taylor@webtorials.com Jim Metzler is the Vice President of Ashton, Metzler & Associates, a consulting organization that focuses on leveraging technology for business success. Jim assists vendors to refine product strategies, service providers to deploy technologies and services, and enterprises evolve their network infrastructure. He can be reached via e-mail. ARCHIVEArchive of the Wide Area Networking Newsletter. BONUS FEATUREIT PRODUCT RESEARCH AT YOUR FINGERTIPS Get detailed information on thousands of products, conduct side-by-side comparisons and read product test and review results with Network World’s IT Buyer’s Guides. Find the best solution faster than ever with over 100 distinct categories across the security, storage, management, wireless, infrastructure and convergence markets. Click here for details. PRINT SUBSCRIPTIONS AVAILABLE International subscribers, click here. SUBSCRIPTION SERVICESTo subscribe or unsubscribe to any Network World newsletter, change your e-mail address or contact us, click here. This message was sent to: networking.world@gmail.com. Please use this address when modifying your subscription. Advertising information: Write to Associate Publisher Online Susan Cardoza Network World, Inc., 118 Turnpike Road, Southborough, MA 01772 Copyright Network World, Inc., 2007 |
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