全国残疾人康复需求调查管理系统.ppt

1,APNIC/TWNIC IP Address 分配與管理,主講人: 台灣網路資訊中心 歐陽拾瓊,2,Welcome APNIC Members Training Course,Effective IP Address Management: Asia-Pacific Policies and Procedures,3,Introduction to APNIC,Asia Pacific Network Information Center,4,What is APNIC?,Regional Internet Registry (RIR) for the Asia Pacific Region Resource registration, allocation and support IP addresses, AS numbers, delegation Membership-based organization Non-profit, neutral and impartial Not: an operations forum Not: a standards development body,5,Internet Registry Hierarchy,ASO,ICANN,6,APNIC Structure,7,APNIC Core Services,Resource allocation IP allocations Second Opinion approval of IP assignments AS number assignments Resource registration Registration services APNIC whois server DNS management Reverse domains - Not: Forward DNS services,8,Internet Registry allocation and assignment,Policies,9,Definitions (1),Internet Registry (IR) An organisation which allocates or assigns, and registers Internet resources including IP addresses and related resources,Regional Internet Registry (RIR) An organisation with regional responsibility for management of Internet resources Responsibilities include allocation/registration services, coordination and policy development Must be neutral and consensus-based,10,Definitions (2),Internet Registries Local Internet Registry (LIR) Otherwise known as an APNIC Member Normally operates as an ISP, and assigns address space to its customers National Internet Registry (NIR) IR which operates on a national basis and primarily allocates resources to its members Must be neutral and consensus-based,11,Definitions (3),Allocation and Assignment Allocation A block of address space held by an IR for subsequent allocation or assignment Assignment A block of address space used to address an operational network May be provided to IR customers, or used for an IRs infrastructure (“self-assignment”),12,APNIC Policies,Based on global Internet registry policies RFC 2050 (1996) Other RIR policies (developed since) Policies for Address Space Management in the Asia Pacific Region (was effective Jan 2000) /docs/add-manage-policy.html Minimum practical allocation: /19 Slow Start policy for new members Allocations as PA Address Space Provider responsible for aggregation Customer assignments must be non-portable,13,APNIC Policies,Allocations based on demonstrated need Detailed documentation required All address space held to be declared Address space to be obtained from one source routing considerations may apply Stockpiling not permitted Validity of allocations and assignments According to original criteria According to correct management According to duration of lease,14,Internet Registry procedures,Address space allocations and assignments,15,Overview,Addressing plan example ISP address request form Address allocations Second opinion request form,16,Addressing Plan Example,Starting off,Leased line services 5-8 customers,Customer services,Interconnected resilience,17,Addressing Plan Example,18,Addressing Plan (contd),Initial addressing plan,19,Network Plan Example,6 months later,scale increased redundancy,added new dial up equipment,increased number of hosts on all LANs,20,Addressing Plan (contd),Network plan at 6 months,21,Network Plan,12 months total,site redundancy greater complexity efficiency,added new customer router,two pieces of essential equipment,22,Addressing Plan (contd),Network plan at 12 months,23,Addressing Plan (contd),24,Addressing Plan (contd),Addressing plan for network-plan determination of relative subnet addresses re-ordered large to small according to relative subnet size network-plan: 1024 128/512/1024 60 leased line customers (pool) network-plan: 256 16/60/240 8 PRI dial up modems, vendor x network-plan: 256 0/60/240 8 PRI dial up modems, vendor y network-plan: 64 10/16/35 LAN -mail,DNS, web internal network-plan: 4 64 15/25/40 LAN -NOC and Ops management network-plan: 28 16 5/11/11 LAN -web hosting (http1.1) network-plan: 44 16 0/8/8 LAN -secondary servers network-plan: 60 16 4/6/12 loopback router interfaces network-plan: 76 4 2/2/2 router WAN ports (x8) cumulative total 08,25,Addressing Plan (contd),Addressing plan for network-plan determination of subnet masks network-plan: 1024 128/512/1024 60 leased line customers network-plan: 256 16/60/240 8 PRI dial up modems, vendor x network-plan: 256 0/60/240 8 PRI dial up modems, vendor y network-plan: 92 64 10/16/35 LAN -mail,DNS, web internal network-plan: 4 92 64 15/25/40 LAN -NOC & Ops management network-plan: 28 40 16 5/11/11 LAN -web hosting (http1.1) network-plan: 44 40 16 0/8/8 LAN -secondary servers network-plan: 60 40 16 4/6/12 loopback router interfaces network-plan: 76 52 4 2/2/2 router WAN ports (x 8 ),26,Addressing Plan (contd),Addressing plan for network-plan connect to the Internet (full-time, part-time)? network-plan: YES 1024 128/512/1024 60 leased customers network-plan: PART 256 16/60/240 8 PRI dial up modems network-plan: PART 256 0/60/240 8 PRI dial up modems network-plan: 92 YES 64 10/16/35 LAN -mail,DNS, web internal network-plan: 4 92 YES 64 15/25/40 LAN -NOC & Ops management network-plan: 28