APNIC IPv6 Pool Management Sanjaya, Services and Operations Director.

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Presentation transcript:

APNIC IPv6 Pool Management Sanjaya, Services and Operations Director

Overview Background Current practice Issues discovered Solution Policy considerations 2

Background There are two IP address management principles which need to be balanced 3 ConservationAggregation

Background IPv4’s limited space put emphasis on conservation over aggregation –Results in heavily fragmented space and complex/large global routing table 4 Conservation Aggregation

Background IPv6’s huge space puts emphasis on aggregation over conservation –Policies and practices should maximize long-term aggregation potential 5 Conservation Aggregation

What is Sparse Allocation? Sequential Allocation: Sparse Allocation: = reservation

Collisions Mixing large (fast-growing) and small (slow-growing) blocks in the same sparse allocation pool is problematic –Early collisions result in disaggregation –“Same size fits all” creates fragmentation 7 S = Small block L = Large block S SSSSSSL Collision

Multiple Pools Use multiple large allocation pools –For example, one pool for very large/fast-growing blocks, the other for “normal” Reduced fragmentation as the larger blocks have more room to grow Still an informal “best effort” strategy –We cannot predict the future! 8

Current Practice APNIC currently has a single /12 IPv6 block (delegated 3 October 2006) Two sparse allocation pools –/13 pool for large (fragmented to /17) –/13 pool for small/medium (fragmented to /24) –No reservations So far, so good –But, collision is coming –Need additional pools for better management 9

Future Practice Designate additional separate IPv6 pools Introduce internal, administrative “reservations” Requires additional /12 from IANA –APNIC will qualify under global policy –Can submit IANA request shortly 10

IPv6 Address Pool Map 11 Pool IDPool sizeMaximum Reservation * Maximum blocks A/13/2832,768 B/13/242,048 C/13/20128 D/13/168 *) Reservations can expire and the space will be optimally used Example

Selection Process APNIC/NIR hostmasters select pool on: –Economy size, population etc –ISP market share, customer base, plans, etc Note: still a best-effort process –Aim is to be “good” not “perfect” 12

Reservation Conditions Currently considered as an internal/administrative practice Reservations are not registered or certified –i.e. no authority to advertise or route Never guaranteed –May be advised to holder –Will be reallocated if/when necessary 13

Policy Considerations Address pool management (including sparse allocation and reservation) is currently considered as administrative practice –Chosen by APNIC staff/Secretariat –Must be consistent with all address policies Should any part of it be formalised in Policy? –Community decision –Proposals welcome as always 14

Questions? 15