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Uses cases for Port‐Extended IPv4 addressing
SHARA BOF – IETF74
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Current model
IPv4 site Private addresses NAT Public IPv4 address IP1 IPv4 ISP ISP internal network Rest of the IPv4 Internet NAT NAT Public IPv4 address IP2
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UsescasesforPortExtended IPv4addressing SHARABOFIETF74 1 - - PowerPoint PPT Presentation
UsescasesforPortExtended IPv4addressing SHARABOFIETF74 1 - - PowerPoint PPT Presentation
UsescasesforPortExtended IPv4addressing SHARABOFIETF74 1 Currentmodel PublicIPv4 IPv4site addressIP1 Private PublicIPv4 addresses addressIP2 NAT
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Current model breakdown
IPv4 site Private addresses NAT Public IPv4 address IPv4 ISP ISP internal network Rest of the IPv4 Internet NAT NAT
NOT ENOUGH IPv4 PUBLIC ADDRESSES TO PROVIDE EACH CLIENT WITH ONE PUBLIC ADDRESS
Public IPv4 address IP2
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Port‐Extended IPv4 addressing Use case #1
IPv4 site Private addresses NAT Public IPv4 address IP1 Port range PR1 IPv4 ISP ISP internal network Rest of the IPv4 Internet NAT NAT Public IPv4 address IP1 Port range PR2 Port router Public IPv4 address IP1 IPv4 in IPv4 tnnels or other L2 tunnel technology Port router Public Address IP1 Port range PR1,PR2,…
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Port‐Extended IPv4 addressing Use case #2
IPv4 site Private addresses NAT Public IPv4 address IP1 Port range PR1 IPv6 internal network Rest of the IPv4 Internet NAT NAT Public IPv4 address IP1 Port range PR2 Public IPv4 address IP1 IPv4 in IPv6 tnnels IPv6 address IPv6 address IPv6 address IPv6 address Public Address IP1 Port range PR1,PR2,… Port router Port router
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Port‐Extended IPv4 addressing Use case #3
IPv6 site NAT64 Public IPv4 address IP1 Port range PR1 ISP internal network Rest of the IPv4 Internet NAT64 NAT64 Public IPv4 address IP1 Port range PR2 Port router Public IPv4 address IP1 IPv4 in IPv6 tnnels, IPv4 in IPv4 tunnels
- r otherL2 tunnel
IPv6 address Public Address IP1 Port range PR1, PR2
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Port‐Extended IPv4 addressing Use case #4
Mobile
- peraYor
IPv4 Internet Public IPv4 address IP1 Port range PR2 Port router Public IPv4 address IP1 Port range PR1,PR2,PR3… Public IPv4 address IP1 Port range PR3 Public IPv4 address IP1 Port range PR1 Public IPv4 address IP1 Tunnel technology
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Generalized use case
Port restricted NAT Port restricted NAT64 Port router End host IPv4 in IPv4 tunnel IPv4 in IPv6 tunnel IPv4 over other L2 tunel PPP link Port Router IPv4 end site IPv6 end site Port router Port router Router Tunnel or IP connecYvity
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