WAN Analysis Best Practices and Technologies


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For more information on Virtualization Manager, visit: http://www.solarwinds.com/virtualization-manager.aspx

Watch this webcast: http://www.solarwinds.com/resources/webcasts/wan-analysis-best-practices-and-technologies.html

WANs or Wide Area Networks are some of the most important networks that we manage today. WANs make up the connections that link our sites together, connect us to the internet, and are usually the ones that cost us the most money. As a result, we’re always trying to increase WAN performance and optimize our investments in this area. During this webcast we’ll discuss best practices and technologies for analyzing WAN optimization and performance.

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  • Title to check
  • In voice over IP (VoIP, jitter is the variation in the time between packets arriving, caused by network congestion, timing drift, or route changes.
  • WAN Analysis Best Practices and Technologies

    1. 1. WAN Analysis Technologies and Best Practices
    2. 2. <ul><li>A big “Howdy” from SolarWinds in Austin Texas </li></ul><ul><ul><li>Mav Turner– Product Manager </li></ul></ul><ul><ul><li>François Caron– Sr. Product Manager </li></ul></ul><ul><li>Today’s Topic: </li></ul><ul><li>WAN Analysis – Technologies and Best Practices </li></ul><ul><li>Who is SolarWinds? </li></ul><ul><ul><li>What we do… </li></ul></ul><ul><ul><li>Who are our customers? </li></ul></ul><ul><ul><li>The SolarWinds community… </li></ul></ul>Introduction
    3. 3. A Few Notes about Today’s Session J0sher2014 <ul><ul><li>Today’s content will be fairly high-level </li></ul></ul><ul><ul><ul><li>We only have an hour </li></ul></ul></ul><ul><ul><ul><li>No attendee left behind… </li></ul></ul></ul><ul><ul><li>Ask questions!!! </li></ul></ul><ul><ul><ul><li>Don’t be afraid to ask deeper questions </li></ul></ul></ul><ul><ul><ul><li>Don’t wait ‘till the end – ask away </li></ul></ul></ul><ul><ul><li>Today’s session is being recorded </li></ul></ul><ul><ul><ul><li>Recorded session on SolarWinds.com </li></ul></ul></ul><ul><ul><ul><li>Slides available on slideshare.com </li></ul></ul></ul><ul><ul><ul><li>We’ll e-mail you links when each are posted </li></ul></ul></ul>
    4. 4. <ul><li>Today’s WAN Technologies </li></ul><ul><li>Why Managing the WAN Matters </li></ul><ul><li>WAN Management Technologies </li></ul><ul><li>Best Practices for Applying these Technologies </li></ul><ul><li>Summary and Q&A </li></ul>Site B Site A
    5. 5. <ul><li>20+ Years of Technology Development </li></ul>1980 1985 1990 1995 2000 2005 2010 2015 X.25 Frame Relay TDM Microwave ATM Last Mile Technologies DSL, ADSL, Wireless MPLS/IP VPN Microwave Cost per MB Amount of data
    6. 6. <ul><li>WAN as a Recurring Cost </li></ul><ul><ul><li>Cost per MB has plummeted but usage overall has skyrocketed resulting in increased overall spend. </li></ul></ul><ul><ul><li>Methods to address WAN growth </li></ul></ul><ul><ul><ul><li>Worst - Just add more bandwidth. Nobody ever got fired for supplying too much bandwidth. </li></ul></ul></ul><ul><ul><ul><li>Better – Deploy new technologies to optimize WAN connections. Get more from what you have now. </li></ul></ul></ul><ul><ul><ul><li>Best – Add WAN performance monitoring tools and then deploy new technologies and measure the impact </li></ul></ul></ul>
    7. 7. The Highway Analogy <ul><li>IP SLA is analogous to sending test cars in actual traffic and measure… </li></ul>This car is added to the actual traffic by IP SLA to test traffic conditions <ul><li>NetFlow is all about Traffic </li></ul><ul><ul><li>Trucks, cars, per destination, direction, what are they carrying? </li></ul></ul><ul><li>CBQoS is the Express Lane </li></ul><ul><ul><li>Cars that use it are given priority access </li></ul></ul>With Netflow, each toll booth can tell you every 30 min how many cars passed by… … and where they were coming from… … and going to! <ul><ul><li>Availability - Does it even arrive? </li></ul></ul><ul><ul><li>Latency - How long does it take? </li></ul></ul><ul><ul><li>Jitter - If I send a car every minute, can they keep that spacing all the way </li></ul></ul>Cars in the express Lane have a “special treatment”
    8. 8. <ul><li>Flow Based Monitoring </li></ul><ul><ul><li>NetFlow (Cisco), j-Flow (Juniper), sFlow (open), IPFIX (IETF Std) </li></ul></ul><ul><ul><li>All operate on similar principles </li></ul></ul><ul><ul><ul><li>Exporter – On the flow device (router/switch). Packages and sends saved flow information to the collector. </li></ul></ul></ul><ul><ul><ul><li>Collector – NetFlow server. Receives and stores flow data from exporters. Displays flow data to users. </li></ul></ul></ul><ul><ul><li>Implementation differs by manufacturer and version </li></ul></ul>
    9. 9. <ul><li>Flow Monitoring Technologies </li></ul><ul><li>Supplies information about user data </li></ul><ul><li>Who, what, when </li></ul>
    10. 10. QoS/CoS Basics <ul><li>QoS/CoS </li></ul><ul><ul><li>Quality of Service, Class of Service </li></ul></ul><ul><ul><li>Allows you to apply QoS policies to the WAN </li></ul></ul><ul><li>QoS Monitoring </li></ul><ul><ul><li>Allows visibility into QoS policy enforcement </li></ul></ul><ul><ul><li>Before and after policy is applied </li></ul></ul><ul><ul><li>SNMP based </li></ul></ul><ul><li>Use with NetFlow Allows Visibility to Class Consumption </li></ul>Modify This Footer: View -> Header & Footer - Slide -
    11. 11. How QoS Works <ul><li>QoS Applied to Interface </li></ul><ul><li>Various Traffic Classes are Defined </li></ul><ul><li>Focus on your WAN </li></ul><ul><li>Focus on your “delay sensitive” applications </li></ul>Modify This Footer: View -> Header & Footer - Slide - Data General VoIP Mission Critical App
    12. 12. <ul><li>IP SLA </li></ul><ul><ul><li>Cisco Proprietary, other vendors have equivalent technologies </li></ul></ul><ul><ul><li>Measures the network from multiple locations </li></ul></ul><ul><ul><li>Generates WAN traffic by inserting various types of traffic “operations”. </li></ul></ul><ul><ul><ul><li>TCP port open, HTTP request, DNS query, FTP file transfer, UDP port open, ICMP ping and trace route, UDP jitter, VoIP jitter, DHCP request. </li></ul></ul></ul><ul><ul><li>Indicates the round trip response time and operation completion time users can expect </li></ul></ul><ul><ul><li>Measures network services 24 X 7 </li></ul></ul><ul><ul><li>Some Operations are sophisticated </li></ul></ul><ul><ul><ul><li>Path operations (hop by hop) </li></ul></ul></ul><ul><ul><ul><li>Breakdown per phase (DNS, TCP, HTTP) </li></ul></ul></ul>
    13. 13. <ul><li>IP SLA Technology </li></ul><ul><li>Supplies information about the network’s abilities </li></ul>
    14. 14. <ul><li>Stepwise Implementation is Best </li></ul><ul><li>Measure your WAN Usage and Abilities </li></ul><ul><ul><li>Deploy NetFlow and IP SLA </li></ul></ul><ul><li>Use Access Control techniques to get rid of Unwanted Traffic (CB QoS, ACL, …) </li></ul><ul><li>Add Optimizers After You Have Addressed WAN Traffic with Your Existing Assets </li></ul><ul><li>Measure Before and After in Terms of Increased Bandwidth and Improved Network Abilities! (IP SLA) </li></ul><ul><li>Set up thresholds to detect new issues and stay ahead of the issues… </li></ul>
    15. 15. Live Product Overview <ul><li>Check-out the on-line SolarWinds product overview </li></ul><ul><ul><li>Available 24 x 7 </li></ul></ul><ul><li>http://oriondemo.solarwinds.com </li></ul>Modify This Footer: View -> Header & Footer - Slide -
    16. 16. Where to learn more… <ul><li>Documentation </li></ul><ul><ul><li>SolarWinds technical documentation: </li></ul></ul><ul><ul><ul><li>http://www.solarwinds.com/support/documentation.aspx </li></ul></ul></ul><ul><ul><li>SolarWinds Knowledge Base (KB): </li></ul></ul><ul><ul><ul><li>http://www.solarwinds.com/kb </li></ul></ul></ul><ul><li>Videos, blogs, and webcasts </li></ul><ul><ul><ul><li>http://www.solarwinds.com/geek </li></ul></ul></ul><ul><li>Community </li></ul><ul><ul><ul><li>http://www.thwack.com </li></ul></ul></ul><ul><li>Technical Support </li></ul><ul><ul><ul><li>http://www.solarwinds.com/support/ </li></ul></ul></ul><ul><ul><ul><li>SolarWinds Certified Professional (SCP) program and training content </li></ul></ul></ul><ul><ul><ul><li>http://www.solarwinds.com/certification/network_certification.aspx </li></ul></ul></ul>
    17. 17. <ul><li>Thank you for attending! </li></ul><ul><li>To learn more or to download free 30-day trials of </li></ul><ul><li>SolarWinds products visit: www.SolarWinds.com </li></ul><ul><li>Contact information </li></ul><ul><li>Josh Stephens, Head Geek </li></ul><ul><li>[email_address] </li></ul><ul><li>twitter: sw_headgeek </li></ul><ul><li>Blog: http://geekblog.solarwinds.com/ </li></ul>Summary and Q&A
    18. 18. Thank You Modify This Footer: View -> Header & Footer - Slide -
    19. 19. <ul><li>WAN Optimization </li></ul><ul><ul><li>WAN TCP Optimizers </li></ul></ul><ul><ul><ul><li>Reduces repetitive TCP signaling using small proprietary messages between optimizers (TCP acceleration) and by deleting repetitive TCP messages (data reduction). </li></ul></ul></ul><ul><ul><li>Compression </li></ul></ul><ul><ul><ul><li>Hardware (ASIC) based fixed code for efficient compression/decompression. </li></ul></ul></ul><ul><li>Good Technologies but ROI is Circuit Limited </li></ul><ul><ul><li>Any particular WAN port can be optimized up to a real limit </li></ul></ul>
    20. 20. SolarWinds IP SLA Manager J0sher2014
    21. 21. J0sher2014 SolarWinds NetFlow Traffic Analyzer
    22. 22. SolarWinds CBQoS Monitoring Modify This Footer: View -> Header & Footer - Slide -