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Reverse Path Visibility with Agent-to-Agent Tests

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In this new webinar, learn why packet's don't flow symmetrically over a network and how the new Agent-to-Agent tests can now give enhanced visibility into both forward and reverse paths and also get more precise network diagnostic data.
See the recording of the live webinar here : https://www.thousandeyes.com/resources/reverse-path-visibility-webinar

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Reverse Path Visibility with Agent-to-Agent Tests

  1. 1. Reverse Path Visibility with Agent-to-Agent Tests Archana K7, Product Marketing Manager
  2. 2. 1 About ThousandEyes ThousandEyes delivers visibility into every network your organization relies on. Founded by network experts; strong investor backing Relied on for critical operations by leading enterprises Recognized as an innovative new approach 27 Fortune 500 5 top 5 SaaS Companies 4 top 6 US Banks
  3. 3. 2 View Across Internal and External Networks Hosting / SaaS Provider 1 Internal network – Monitor WAN, Datacenter Internet 3 Monitor any service, application from global vantage points 2 Monitor IaaS, SaaS service hosted in the cloud Cloud AgentEnterprise Agents Branch Data Center
  4. 4. 3 • Agent-to-Server – Test Target is an application or service endpoint • Agent-to-Agent – Monitoring location and test target are both agents – Cloud–Enterprise or Enterprise–Enterprise Network Tests • Visibility and insight into the network used to connect between each testing location and target • Usually bundled with other types of tests - HTTP, Page Load What Types When • Hop-by-hop network path and node level data • Packet loss, Jitter, Latency, Bandwidth
  5. 5. 4 Reverse Path • A to B B to A • Packet’s do not flow symmetrically over a network • Peering relations between ISP’s • Load-balancing algorithms • Multiple ECMP paths • Traceroute based monitoring techniques focus ONLY on forward path
  6. 6. 5 Bidirectional Path Visibility
  7. 7. 6 Accurate real-time representation of forward & reverse paths providing visibility into internal and external networks More precise diagnostic data to help isolate faults with directional and hop by hop granularity significantly reducing MTTT Unified visualization to simplify deployment workflows and management Agent-to-Agent Tests
  8. 8. 7 Bidirectional View Across Internal and External Networks Hosting / SaaS Provider 1 Internal network – Monitor WAN, Datacenter Internet 3 Monitor any service, application from global vantage points 2 Monitor IaaS, SaaS service hosted in the cloud Cloud AgentEnterprise Agents Branch Data Center 4 Discover Forward & Reverse paths. Outbound ISP performance
  9. 9. 8 • Internal WAN Monitoring – Discover ECMP paths – Precise metrics in both directions • Performance of outbound/egress path from branch office or datacenter – Compare ISP performance across forward and reverse path • Forward and Reverse Path MTU Agent-to-Agent Use Cases
  10. 10. 9 NAT Traversal
  11. 11. 10 NAT Basics Enterprise Agent Web ServerNAT 10.0.0.2:1025 <-> 49.1.4.23:3827 10.0.0.2:1025 -> 1.2.3.4:80 49.1.4.23:3827 -> 1.2.3.4:80 NAT Table 1.2.3.4:80 -> 49.1.4.23:38271.2.3.4:80 -> 10.0.0.2:1025
  12. 12. 11 • NAT configurations allow communication originating from the internal network • Externally originating communication normally require forwarding rules on the NAT NAT Basics Enterprise Agent NAT 1.2.3.4:80 -> 49.1.4.23.3:827 Cloud Agent
  13. 13. 12 • Agent-to-Agent tests require NAT device to allow externally generated communication – Requires security department to open a port – Increases configuration rules • NAT Traversal facilitates communication between endpoints across NAT devices w/o the need for inbound rules NAT Traversal
  14. 14. 13 How NAT Traversal works
  15. 15. 14 qHow to configure Agent-to-Agent tests qLive Demo qHow to configure NAT traversal Demo
  16. 16. 15 Step1: Add an Agent-to-Agent Test Agent-to-Agent tests is a part of Network tests Select a target agent Select from available agents as the test source Select the direction for the test
  17. 17. 16 Step 2: Configure Alerts Add End-to-End alerts for Agent- to-Agent tests Specify the direction of the tests for the alerts Map the alerts to the test
  18. 18. 17 Step 3: Explore the Network views Target service Network metrics are calculated per direction
  19. 19. 18 Step 4: Explore Path Visualization showing forward and reverse paths Loss only see in the reverse path
  20. 20. 19 How to enable NAT Traversal Flag Enable NAT Traversal Flag for Enterprise agents under “Advanced Settings”
  21. 21. 20 See what you’re missing. Watch the webinar https://www.thousandeyes.com/resources/reverse-path-visibility-webinar

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