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Enterprise Traffic Management Challenges Performance Management for Converged Networks

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Enterprise Traffic Management Challenges Performance Management for Converged Networks Overview Introduction Leslie Miller, Sr. Solutions Marketing Manager MillerL ... – PowerPoint PPT presentation

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Title: Enterprise Traffic Management Challenges Performance Management for Converged Networks


1
Enterprise Traffic Management ChallengesPerforman
ce Management for Converged Networks
2
Overview
  • Introduction
  • Leslie Miller, Sr. Solutions Marketing Manager
  • MillerL_at_NetScout.com
  • Converged network challenges
  • Meeting the challenge using the Management
    Lifecycle
  • Pre-assessment
  • Planning and pre-implementation preparations
  • Post-deployment impact analysis
  • On-going management of converged environment

3
Converged Network Challenges
4
Converged Network Challenges
  • Primary Business Concern
  • High level of expectations surrounding voice
    services
  • Technical
  • Voice traffic overwhelming existing network
    resources
  • Voice is a real-time application, i.e.,
    sensitivity to delay, jitter and packet loss
  • Proper traffic prioritization (QoS) to ensure
    other applications do not contend with
    voice-allocated bandwidth
  • Adding complexity to already very complex
    enterprise networks

5
Meeting the ChallengePerformance Management for
Converged Networks
6
Management Lifecycle for Convergence
  • Assessment
  • Is your network ready for Voice?
  • Planning
  • Have made decisions to ensure an effective
    rollout?
  • Impact analysis
  • Is everything running as smoothly as planned?
  • Ongoing management
  • How is your network changing and growing over
    time?

7
Step One AssessmentIs your network ready for
Voice?
  • Create an inventory of all applications on the
    network
  • Evaluate bandwidth to ensure capacity for Voice
  • Understand network utilization to determine areas
    with too little capacity
  • Identify how business sites use network resources
  • Baseline the response time of key business
    applications
  • Audit the network for subtle, systemic problems
  • Identify issues that may impact a VoIP deployment
  • No matter how well architected your network is,
    once voice is added, any idiosyncrasy is bound to
    appear.

8
Understand how the business uses the network
Application visibility provides business
justification for IT decisionsAre there good
reasons for an upgrade? Are there non-business
uses of the network?
Well-known, custom, web-based, P2P, complex, etc.
9
Baseline response time of key business apps
A pre-deployment snapshot of response time can be
used as a comparison post-deployment to ensure
voice does not negatively impact delivery of key
business applications
Response time provides insight into the end-user
experience and should be an integral part of any
performance management tool
10
Step Two PlanningHave you made all decisions to
ensure an effective rollout?
  • Based on gathered data
  • Fine-tune capacity and implement needed upgrades
  • Investigate and troubleshoot subtle problems
  • Establish post-deployment alarm thresholds
  • Establish and implement QoS policies

11
Fine-tune capacity and implement needed upgrades
What applications contribute to capacity?
Eliminate undesired traffic Reschedule
processes Redistribute load Add new bandwidth
where required
12
Step Three Impact AnalysisIs everything running
as smoothly as planned?
  • Confirm voice configuration and quality
  • Is voice being delivered as designed?
  • Confirm QoS configuration and success
  • Are all applications in the proper delivery
    class?
  • Determine whether voice and bandwidth utilization
    estimates meet with actuals
  • Re-evaluate response time of critical
    applications
  • Have there been negative impacts of voice or
    positive impacts because of QoS?

13
Validate voice is being delivered as designed
Monitor call jitter, packet loss percentage, and
setup times to confirm voice performance
Validate codec and voice traffic prioritization
configurations
14
Validate QoS configurations were set correctly
Applications that have been assigned a wrong DSCP
will be quickly identified in this view and will
make pinpointing the mis-configured device much
easier
15
Does actual volume meet with estimates
Evaluate the impact of voice on utilization
Post-implementation
Pre-implementation
16
Does actual volume meet with estimates
17
Step Four Ongoing ManagementHow is your network
changing and growing over time?
  • Converged networks need unified performance
    management
  • Managing the network in pieces can be time
    consuming
  • Unified product provides a lower TCO!
  • Continuation of the tasks you performed in
    assessment and post-deployment impact phases
  • Troubleshooting - requiring real-time information
  • Planning and traffic engineering - requiring
    longer-term historical information
  • Communication to key constituents
  • Easy to create, customizable reports

18
Converged networks need unified management
Voice doesnt exist alone on the network. A
converged view of all applications provides
context to a problem and allows you to
troubleshoot faster
19
Converged networks need unified management
Context to performance problems enables faster
troubleshooting Make sure your performance
management solution can display needed
information side-by-side
20
Evaluate growth on an ongoing basis
Forecast the growth of segments, circuits or
applications and continue to refine traffic
engineering and capacity planning based on
application additions and changes in usage
patterns
21
Reporting results
Customize reports to reflect individual needs
from high-level summaries to meticulous details
22
Summary
23
Management Lifecycle for Convergence
  • Assessment
  • Is your network ready?
  • Planning
  • Have made decisions to ensure an effective
    rollout?
  • Impact analysis
  • Is everything running as smoothly as planned?
  • Ongoing management
  • How is your network changing and growing over
    time?

24

THANK YOU!
Leslie MillerMillerL_at_NetScout.com
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