Network recovery
The Converged Network Analyzer
The Converged Network Analyzer (CNA) is an offer from the Avaya Application Assurance Networking (AAN) line of products. It provides two principal value propositions:
●visibility
●path optimization.
Visibility is achieved through the use of real time measurements of the network infrastructure. These measurements feed extensive reports and diagnostics tool, which give the user powerful capabilities. On one end of the spectrum, CNA enables the user to monitor the general health of their network and its ability to support demanding applications such as voice, video, and real time TCP applications. On the other end of the spectrum, CNA enables the user to troubleshoot the cause of a specific network problem.
Path optimization functions as follows: when two paths or more are available between two measured end points, CNA can measure all of the available paths simultaneously. If any problem is detected on one of the paths, CNA can intervene in real time and send route updates to the edge routers, moving the traffic to a
CNA features a range of application models that assess network conditions. The models focus on the specific characteristics and requirements of different applications:
●Voice
●Video Conferencing
●Video Streaming
●Web applications
●Enterprise TCP applications
Using these application models, CNA translates the performance characteristics of the network path (e.g., latency, jitter, and loss) into Application Performance Ratings (APR). The APRs provide a relative measure of performance if the application were run over this network fabric.
In addition, CNA automatically discovers applications running over the network and can optionally measure load over various links in the network. A sophisticated policy language allows the user to specify precise policies in terms of:
●What applications to optimize
●The performance level to maintain for these applications
●The preferred paths through which to send traffic for these applications
●Load thresholds not to exceed on specific paths.
The CNA package comprises servers that perform most of the analysis, provide the path optimization functionality, and store the reports. CNA also comprises optional no cost test agents that are embedded in an array of avaya phones, gateways, and Avaya partner products
