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rfc-018-environment-internal-ips.md

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status: "aPPROVED" notes: " "

Problem

Currently all our environments use the same very large internal IP ranges

  1. Identical IPs makes using VPNs to talk between organisations within an environment hard
  2. We are being really wasteful with IPs

Proposal

We will have three environments - preview, staging and production. Each environment will have three organisations - GOV.UK, Disaster Recovery and Licensify. GOV.UK and DR organisations will contain six vDCs - management, router, frontend, backend, API and redirector. The Licensify organisation will contain one vDC called Licensify.

  • Each VDC should have a /24 assigned to it
  • Each Org. should have a /21 assigned to it
  • Each ENV should have a /19 assigned to it

 

 

  Integration Staging Production Notes
Environment 10.1.0.1/19 10.2.0.1/19 10.3.0.1/19 10.X.0.1 -> 10.X.31.255 = 8192 addresses
Main organisation 10.1.0.1/21 10.2.0.1/21 10.3.0.1/21 10.X.0.1 -> 10.X.7.255 = 2048 addresses
DR organisation 10.1.8.1/21 10.2.8.1/21 10.3.8.1/21 10.X.8.1 -> 10.X.15.255 = 2048 addresses
GOV.UK - Management VDC 10.1.0.1/24 10.2.0.1/24 10.3.0.1/24 10.X.Y.1 -> 10.X.Y.255 = 256 addresses
GOV.UK - Router VDC 10.1.1.1/24 10.2.1.1/24 10.3.1.1/24  
GOV.UK - Frontend VDC 10.1.2.1/24 10.2.2.1/24 10.3.2.1/24  
GOV.UK - Backend VDC

10.1.3.1/24

| 10.2.3.1/24 | 10.3.3.1/24 |   | | GOV.UK - API VDC | 10.1.4.1/24 | 10.2.4.1/24 | 10.3.4.1/24 |   | | GOV.UK - Redirector VDC | 10.1.5.1/24 | 10.2.5.1/24 | 10.3.5.1/24 |   | | DR - Management VDC | 10.1.8.1/24 | 10.2.8.1/24 | 10.3.8.1/24 |   | | DR - Router VDC | 10.1.9.1/24 | 10.2.9.1/24 | 10.3.9.1/24 |   | | DR - Frontend VDC | 10.1.10.1/24 | 10.2.10.1/24 | 10.3.10.1/24 |   | | DR - Backend VDC | 10.1.11.1/24 | 10.2.11.1/24 | 10.3.11.1/24 |   | | DR - API VDC | 10.1.12.1/24 | 10.2.12.1/24 | 10.3.12.1/24 |   | | DR - Redirector VDC | 10.1.13.1/24 | 10.2.13.1/24 | 10.3.13.1/24 |

 

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  Integration Staging Production Notes
Environment: Licensify & EFG N/A 10.0.0.1/8 10.0.0.1/8  
EFG organisation N/A 10.0.0.1/8 10.0.0.1/8  
Licensify organisation 10.0.0.1/8 10.0.0.1/8 10.0.0.1/8  
EFG vDC N/A 10.4.0.1/16 10.4.0.1/16 Uses old numbering format
Licensify vDC 10.5.0.1/16 10.5.0.1/16 10.5.0.1/16 Uses old numbering format