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IPv6 Deployment In Enterprise Networks

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Enterprise networks using private IPv4 address space might not feel the need to migrate to IPv6. They are wrong and might be faced with severe consequences in the future.

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IPv6 Deployment In Enterprise Networks

  1. 1. IPv6 Deployment in Enterprise Networks Ivan Pepelnjak Chief Technology Advisor, NIL Data Communications
  2. 2. ©2009 NIL 2 Scenario • Do I care about IPv6? • Where shall I focus my efforts? Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  3. 3. ©2009 NIL 3 Facts of Life • IPv6 is here, get used to it. • You’ll get stuck on migration details. • Start small, but start now.
  4. 4. ©2009 NIL 4 Facts of Life (NAT) • Everyone uses 4-to-4 NAT. It’s bad. • Slow migration to IPv6 requires more NAT. • 6-to-4 NAT stinks. • 4-to-6 NAT is horrendous.
  5. 5. ©2009 NIL 5 Deployment Phase 1: Dual-stack • Some public servers are reachable over IPv6 Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  6. 6. ©2009 NIL 6 Deployment Phase 2: IPv6 Clients • Some clients are using only IPv6: 6-to-4 NAT Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  7. 7. ©2009 NIL 7 Deployment Phase 3: IPv6 Servers • Some servers are reachable only over IPv6: 4-to-6 NAT Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  8. 8. ©2009 NIL 8 Timeline Guestimate Time [years] IPv6adoption[%] Dual-stack: now IPv6-only clients 2-3 years IPv6-only servers 10(?) years Knowledge opportunity loss Business opportunity loss Nightmare
  9. 9. ©2009 NIL 9 Phase 1 Actions Ignore IPv6 or … • Deploy IPv6 in your DMZ infrastructure • Dual-stack on non-critical servers Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  10. 10. ©2009 NIL 10 Phase 2 Actions • You are IPv6 ready in your DMZ (are you?) • Design, test and deploy dual stack in your network Private network using RFC 1918 IPv4 DMZ using public IPv4 Public Internet
  11. 11. ©2009 NIL 11 Phase 3 Actions Relax and enjoy Frantic catch-up efforts Suffer the consequences of 4-to-6 NAT RFC 1918 IPv4 Public IPv6 DMZ using public IPv4 Public Internet
  12. 12. ©2009 NIL 12 Summary • IPv6 is here • There’s no rush (yet) • Use your time wisely

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