Internet Registry allocation and assignment Policies ASIA PACIFIC

Internet Registry allocation and assignment Policies ASIA PACIFIC NETWORK INFORMATION CENTRE

Overview of RIR Policies w. Definitions w. Background w. Objectives w. Environment w. Allocation & Assignment Policies ASIA PACIFIC NETWORK INFORMATION CENTRE

Definition: Allocation and Assignment w. Allocation w. A block of address space held by an IR for subsequent allocation or assignment w. Not yet used to address any networks w. Assignment w. A block of address space used to address an operational network w. May be provided to LIR customers, or used for an LIR’s infrastructure (‘self-assignment’) ASIA PACIFIC NETWORK INFORMATION CENTRE

Definition: Allocation and Assignment RIR LIR Allocates IP addresses Assigns IP addresses LIR ASIA PACIFIC NETWORK Customer INFORMATION CENTRE

Definition: PI and PA w. Provider Independent (Portable) w. Customer holds addresses independent from ISP w. Customer keeps addresses when changing ISP w. Bad for size of routing tables w. Bad for QOS: routes may be filtered, flap-dampened w. Provider Aggregatable (Non-portable) w. Customer uses ISP’s address space w. Customer must renumber if changing ISP w. Only way to effectively scale the Internet ASIA PACIFIC NETWORK INFORMATION CENTRE

RIR Policies - Background w. Growth of Global Routing Table w Unaggregated Internet would exceed 200, 000 routes! Projected routing table growth without CIDR But they cannot be relied on forever CIDR worked for a while Deployment Period of CIDR http: //www. telstra. net/ops/bgptable. html ASIA PACIFIC NETWORK INFORMATION CENTRE

Routing Table Prefix Distribution May-00 <16 16 Mar-00 17 18 Jan-00 19 20 21 Nov-99 22 23 Sep-99 24 >24 Jul-99 0 20000 ASIA PACIFIC NETWORK 40000 60000 INFORMATION CENTRE 80000 100000

RIR Policies - Objectives w. Ensuring efficient use and conservation of resources w. Through careful allocation and assignment policies w. Limiting growth of routable prefixes w. Through provider-based addressing w. Fairness and consistency of procedures w. Through neutrality and expertise of registry ASIA PACIFIC NETWORK INFORMATION CENTRE

RIR Allocation Policies w. IP addresses not freehold property w. Internet resources are public resources w‘Ownership’ is contrary to management goals w. Assignments & allocations on lease basis w. Routability not guaranteed w. ISPs determine routability w. Unpredictable growth rates w. IPv 4 deployment levels unanticipated w. Routing table growth still poses a threat ASIA PACIFIC NETWORK INFORMATION CENTRE

RIR Allocation Policies w. Varying levels of expertise w. Growing technical challenge w. Staff turnover throughout industry w. Flexible policies to accommodate differences w. Training programme to support LIRs w. Confidentiality & security w. RIR to observe and protect trust relationship w. Non-disclosure agreement signed by staff ASIA PACIFIC NETWORK INFORMATION CENTRE

RIR Allocation Policies w. Minimum practical allocation /20 w‘Slow Start’ policy for new LIRs w. Allocations as PA address space w. Provider responsible for aggregation w. Customer assignments must be non-portable w. Allocations based on demonstrated need w. Detailed documentation required w. All address space held to be declared w. Stockpiling not permitted ASIA PACIFIC NETWORK INFORMATION CENTRE

RIR Allocation Policies w. Implement ‘Best current practice’ w. Will change over time as technology changes w. Static assignments discouraged w dial up w virtual hosts (IP based web hosting) w. Address conservation considered w implement ‘ip unnumbered’ w use private address space (rfc 1918) w consider use of Network Address Translation (NAT) ASIA PACIFIC NETWORK INFORMATION CENTRE

Questions? ASIA PACIFIC NETWORK INFORMATION CENTRE