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NetBrain In Action

NetBrain In Action. Real World Use Cases:. Document Automation Visual Troubleshooting QA Network Changes. Troubleshoot Slow Applications. Challenges:. Lack of documentation and historic data for applications Difficult to visualize network slowness. Solutions:.

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NetBrain In Action

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  1. NetBrain In Action Real World Use Cases: • Document Automation • Visual Troubleshooting • QA Network Changes

  2. Troubleshoot Slow Applications Challenges: • Lack of documentation and historic data for applications • Difficult to visualize network slowness Solutions: • Use Dynamic Diagram to map out application flows • Diagnose from a map • Congested WAN links • High CPU/Memory utilization of routers • Unstable routing • Asymmetric flows • Speed/duplex mismatch Common Causes: Performance metrics for an application are visualized in real-time

  3. Troubleshoot Network Connectivity Challenges: • No up-to-date documents about servers’ physical and logical connectivity Solutions: • On-demand document automation • Broken cable • Switch port in disabled mode by spanning tree or error-disable • Server plugged into wrong port • Gateway Router not functioning • Misconfiguration • Link down/flapping Common Causes: A L3 Heat Map A L2 Heat Map

  4. Troubleshoot Route Flapping Challenges: • Route flapping is transient in nature – difficult to catch and pinpoint root cause Solutions: • Use routing table analyzer • Link flapping • Router CPU overload • Routing peer reset • Network worm attack Common Causes: Drag-and-drop the entry to a Q-map

  5. Troubleshoot Packet Loss Across MPLS Challenges: • No visibility into a service provider’s MPLS cloud Solutions: • Map-driven IPSLA Toolkit • QoS classification errors • Physical errors at Demac • Congested MPLS core • Mismatch of CE-PE configuration Common Causes:

  6. Troubleshoot Bandwidth Hogging Challenges: • Difficult to pinpoint congested links • Time-consuming to setup probes to track down bandwidth-hogging devices Solutions: • Heat Map along with IP Accounting • Unauthorized network use • Looping traffic caused by misconfiguration • Virus attack Common Causes:

  7. Plan Network Migration Document automation dialog Challenges: • Very time-consuming to document the network before migration • No visual help to plan network migration Solutions: • Model network migration based on configuration files • Analyze new network design with Design Reader • Highlight routing to visualize design Related Features: Drag and drop New Add a new network device

  8. QA Network Changes to Prevent Outages Challenges: • A small change may cause major impacts across the entire network, but it is difficult to check all changes manually Solutions: • Automate impact verification after each network change • The comparative analysis of routing, configuration and traffic path should be run after most network changes – because 3 out of 4 network outages are caused by seemingly benign changes Detect routing changes after configuration modification When to Use:

  9. Document a Data Center Network Challenges: • It takes weeks or months to discover and document a data center with tracing cables, show commands and Visio Solutions: • Advanced discovery and document automation • Before and after a data center upgrade • Data center assessment When to Use:

  10. Assess a Network for VoIP Readiness Challenges: • VoIP is very complex and depends on many advanced technologies to work properly Solutions: • Automate the analysis of network design and performance IPSLA Measurement • Apply diagnostic monitoring to VoIP paths • Automate documentation for VoIP assessment Related Features: Map VoIP traffic path instantly

  11. Merge Two Independent Networks Challenges: • Two networks were built without knowledge of the other, and everything has to be reevaluated to avoid conflicts Solutions: • Plan the network merge in a virtual environment • Analyze the new network design with Design Reader • Use Search to find the information needed Related Features: Compare the inventory data of two networks

  12. Defend Against Network Attack Challenges: • Network attacks can come from anywhere, and they are difficult to visualize Solutions: • Use Dynamic Diagram to map out attacks and take defensive action in real-time Map the attack from the inside • To visualize a denial-of-service attack to the network and servers • To analyze suspicious traffic from a vague host • To isolate virus-infected end hosts When to Use: Map the attack from the outside

  13. Become Cisco Certified - CCIE/CCNP/CCNA Challenges: • It takes a long time to become Cisco certified. People can forget things learned if not reinforced properly Solutions: • Use NetBrain to document practice labs automatically and review past labs visually • To prepare for CCIE • To prepare for CCNP • To prepare for CCNA When to Use:

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