Global naming & local addressing
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The document discusses hierarchical global naming versus flat local addressing in network architecture. Global names have a hierarchical structure from specific to general domains, while local addresses are flat with no topological meaning. Late binding allows names to be resolved to addresses at a late stage, and network address translation (NAT) has become common practice. This architecture allows for minimal governance of names and none for addresses, as well as inherent scalability and local mobility.
Global naming & local addressing
- 1. Global Naming & Local Addressing Dae Young KIM 17Oct13 dykim@cnu.kr 1
- 2. Architecture Hierarchical Global Name Flat Local Address Late binding NAT as a norm Name nodes, not interfaces 17Oct13 dykim@cnu.kr 2
- 3. Hierarchical Global Naming Hierarchical C Bottom-up pruning cnu.ac.kr, cnu.kr, cnu.edu C In contrast to topdown allocation/distribution IP address C Minimal governance; against duplicity Global C xyz.ccl.cnu.kr.globe.solar.galaxy 17Oct13 dykim@cnu.kr 3
- 4. Flat Local Addressing Flat node address C No hierarchy C No topological significance C No change inside a given local domain C No change in moving > inherent local mobility Local C No need for governance 17Oct13 dykim@cnu.kr 4
- 5. Late Binding and NAT Late Binding C ccl<cnu<ac<kr<globe<solar<galaxy | | | | | | a1< a2 <a3<a4< a5 < a6 < NAT C Norm, not an anomaly 17Oct13 dykim@cnu.kr 5
- 6. Consequences Governance-free C Minimal for names C None for addresses Inherently scalability C Divide and Conquer Inherent local mobility C NAT mobility transversal: engineering challenge From e2e to middle-box 17Oct13 dykim@cnu.kr 6