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Successfully Interconnecting Data Centers

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Successfully Interconnecting Data Centers presentation for Cisco Connect Canada Tour 2014.

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Successfully Interconnecting Data Centers

  1. 1. Successfully Interconnecting Data Centers Ronnie Scott Technology Solutions Architect Sept 2014
  2. 2. Cisco Confidential 4© 2013-2014 Cisco and/or its affiliates. All rights reserved.  The Intent  The Reality  Delivering On The Promise Agenda
  3. 3. Cisco Confidential 5© 2013-2014 Cisco and/or its affiliates. All rights reserved.
  4. 4. Cisco Confidential 6© 2013-2014 Cisco and/or its affiliates. All rights reserved. Data Center BData Center A Layer 2 vs Layer 3 Interconnects Layer 3 Subnet A 10.0.1.0 Subnet B 10.0.2.0 IP Readdressing Required
  5. 5. Cisco Confidential 7© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Layer 2 vs Layer 3 Interconnects Layer 2 Subnet A 10.0.1.0 Subnet A 10.0.1.0 NO IP Readdressing Required Tunnel
  6. 6. Cisco Confidential 8© 2013-2014 Cisco and/or its affiliates. All rights reserved. Layer 1, 2, or 3 Transport • Dark Fiber • Lambda (CWDM / DWDM) Layer 1 Transport 8 • Cost • Distance • Optics • Administration
  7. 7. Cisco Confidential 9© 2013-2014 Cisco and/or its affiliates. All rights reserved. • MPLS (EoMPLS) • Metro Ethernet • Wireless Layer 1, 2, or 3 Transport Layer 2 Transport 9 • Latency • Bandwidth • Frame Size • Spanning Tree
  8. 8. Cisco Confidential 10© 2013-2014 Cisco and/or its affiliates. All rights reserved. • Any WAN Service Layer 1, 2, or 3 Transport Layer 3 Transport 10 • Latency • Bandwidth • Frame Size • Tunneling
  9. 9. Cisco Confidential 11© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Multiple Site Meshes 11
  10. 10. Cisco Confidential 12© 2013-2014 Cisco and/or its affiliates. All rights reserved.
  11. 11. Cisco Confidential 13© 2013-2014 Cisco and/or its affiliates. All rights reserved. Spanning Tree • Loop Flooding • TCN Flooding • Broadcast/ARP Flooding • Slow Convergence Time • Interface Blocking 13
  12. 12. Cisco Confidential 14© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Spanning Tree Example Network Flooding 14
  13. 13. Cisco Confidential 15© 2013-2014 Cisco and/or its affiliates. All rights reserved. Split Brain • Potential Data Corruption • Incorrect DR Take Over • Loss Of Network State • Loss Of Application Tiers 15
  14. 14. Cisco Confidential 16© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Split Brain Example Data Inconsistency 16 Branch 1 Branch 2
  15. 15. vPC DC Edge Internal DC Zone(s) DC Core VDC (Routed) DC Aggregation Layer VDC Compute Access Layer FW CLUSTER Entanglement HOT vMotion! in in out
  16. 16. Cisco Confidential 18© 2013-2014 Cisco and/or its affiliates. All rights reserved. Asymmetric Routing • Traffic Management • Network Service State Issues • Troubleshooting • Latency/Performance 18
  17. 17. Cisco Confidential 19© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Assymetric Routing Example Loss Of State 19 Branch
  18. 18. 20
  19. 19. 21
  20. 20. Cisco Confidential 22© 2013-2014 Cisco and/or its affiliates. All rights reserved.
  21. 21. 23
  22. 22. Cisco Confidential 24© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center • Physically Diverse Paths • Physically Separate Devices • No Shared Fate Domain Best Practice Dual Redundant and Diverse Paths 24
  23. 23. Cisco Confidential 25© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center • VPC • OTV • VXLAN Best Practice Avoid Spanning Tree 25 • FabricPath • NVGRE • MPLS
  24. 24. Cisco Confidential 26© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center • Broadcast Suppression • ARP Filtering Best Practice Contain Fault Domain 26 • L2 Routing (ISIS) • Gateway Management
  25. 25. Cisco Confidential 27© 2013-2014 Cisco and/or its affiliates. All rights reserved. Symmetric Routing - Inbound • Explicit Routes • NAT / Gateway Devices • LISP • DNS • IP Readdressing 2727
  26. 26. Cisco Confidential 28© 2013-2014 Cisco and/or its affiliates. All rights reserved. Symmetric Routing - Outbound 28 • Weighted Routing • Default Gateway Prioritization • NAT / Gateway Devices
  27. 27. Cisco Confidential 29© 2013-2014 Cisco and/or its affiliates. All rights reserved. Optimal Routing • GSLB • SLB Clustering • FW Clustering • LISP 2929
  28. 28. Cisco Confidential 30© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Latency Ensuring Synchronization Completion 30 • Storage Replication • Application Synchronization • Virtual Machine Migration
  29. 29. Cisco Confidential 31© 2013-2014 Cisco and/or its affiliates. All rights reserved. Virtual Data Center Jumbo Frames Ensuring Packet Delivery 31 • No PMTUD • No “Could Not Fragment” • Dramatic IP Performance Degadation 101100110…
  30. 30. www.cisco.com/go/vmdc 32
  31. 31. Cisco Confidential 33© 2013-2014 Cisco and/or its affiliates. All rights reserved.
  32. 32. Cisco Confidential 34© 2013-2014 Cisco and/or its affiliates. All rights reserved.
  33. 33. Cisco Confidential 35© 2013-2014 Cisco and/or its affiliates. All rights reserved. 35
  34. 34. Cisco Confidential 36© 2013-2014 Cisco and/or its affiliates. All rights reserved. 36
  35. 35. Cisco Confidential 37© 2013-2014 Cisco and/or its affiliates. All rights reserved. 37
  36. 36. Thank you.

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