Save Big with the New Network Stimulus Program
Looking to stretch your IT budget? Save up to $5,000 (£4,000 for UK customers) on a new GigaStor™, when you trade in your DSS or Infinstream. The promotion ends December 28, 2009.

Act now.

     
   
  Top 5 Observer 14 Features
We're proud to announce Observer® 14. Many of the features are customer-driven, providing significantly enhanced application analysis, strengthening proactive troubleshooting, and adding to our top-end reporting server's capabilities for a more streamlined approach to problem resolution. With limited newsletter space and so many features, we'll cover the top 5 features of greatest interest to our new and existing users.


Auto-Baseline Performance
Use auto-baselining to manage problems before they impact the user. Observer Reporting Server (ORS) and Observer Suite now automatically establish baselines for all performance and time-based metrics. In the Tech Spotlight, we'll discuss how to set up baselines and compare current and past application performance.

Solution-Focused Workflows
Solution-centered, user-defined workflows offer a new approach to investigate and resolve problems. Traditionally, for every application or network issue, you're forced to navigate through the same investigation path as dictated by the analysis software. Rather than having to follow a set process to find relevant data, use new workflows in ORS and Observer Suite to take the shortest route to resolution.

Application Transaction Analysis
In managing application performance, you need to determine whether application delivery occurred on time and if the content was delivered successfully. Observer's Application Transaction Analysis does both. Verify delivery and diagnose specific application failures.

In Observer 14, all application protocols now provide greater error and transaction details. In addition, greater support and analysis have been added for: Citrix, DHCP, LDAP, and VoIP (H.323/225, H.323/245, H323/RAS, Megaco H.248, SCCP (Cisco Skinny), and SIP). Don’t forget Observer still provides extensive response time metrics on thousands of applications.

VoIP
Along with increased VoIP support noted above, Observer 14 offers several features that expand and simplify VoIP analysis. Many organizations encrypt VoIP by running secure RTP on their network, which protects conversations from eavesdropping but severely limits monitoring and troubleshooting of call problems. Observer now provides call quality metrics on SRTP without impacting the security of the traffic. Another difficulty you can face is analyzing VoIP issues when call components are split among multiple captures taken from separate areas of the network. Observer solves this issue by combining multiple trace files into a single view for analysis.

Performance Reporting
Create performance reports faster in ORS and Observer Suite. New streamlined reporting makes report setup easy, and new report types provide more options for viewing and analyzing performance. For example, new threshold-based reports display color-graded views of application response times making it easy to identify periods of acceptable and poor performance.

Although the new capabilities discussed above are quite extensive, they represent only a small portion of the features in the release. For more on Observer 14, check our website or read the press release.

     
   
  Setting Performance Baselines
Use the auto-baselining feature within Observer Suite and Observer Reporting Server (ORS) to quickly assess how your network and applications are operating compared to past performance. Compare performance by time of day, day of week, or day of month for all performance and time-based metrics.


In this example, we'll look at how HTTP traffic response time today compares with response time gathered in Trending over the last week.

Note: Be sure Trending is activated in Observer Suite or ORS.

  1. Within ORS from the main menu, select Schedules > Baselining > Edit. Within Observer Suite from the main menu, select Options > Web Reporting Configuration > Baselining > Edit.


  2. In the Baseline Settings window, define the time period to determine the baseline. Based on retained data in Trending, Observer calculates the baseline indicating normal performance, and deviations signifying degraded and unacceptable performance. Let's look at the different ways to compare data:

    Previous number of days: view performance each day of the month with option of excluding weekends
    Same day over previous number of weeks: compare performance of every Wednesday for the last six weeks
    Special days of the month: compare performance of 15th of every month for the last 4 months

  3. Indicate the length of time you would like to baseline by indicating the Number of previous days to compare against. Click OK.




    Based on the graph, you can see that current HTTP performance fluctuated above and below baseline early in the day. Later HTTP performance was almost identical to the established baseline.

     
 
october 2009  


Last Month's Answer
The data link layer is divided into two sublayers: logical link control (LLC) and media access control (MAC).

Congrats to last month's winner, Rene Francisco of San Bernardino, California.

This month's question:
Routers operate at which layer of the OSI model?

Submit your answer and be entered to win a Network Instruments® polo shirt.

New Observer 14 White Paper
Managing performance with ORS

Top Observer Features
What's New in 14?

Interop New York (Booth 329)
November 18-19

NIU Boston
November 16-19

NIU in Kent, UK
November 17-19