17Oct13 dykim@cnu.kr 1

Global Naming&

Local Addressing

Dae Young KIM

17Oct13 dykim@cnu.kr 2

Architecture

● Hierarchical Global Name● Flat Local Address

● Late binding● NAT as a norm

● Name nodes, not interfaces

17Oct13 dykim@cnu.kr 3

Hierarchical Global Naming

● Hierarchical– Bottom-up pruning

● cnu.ac.kr, cnu.kr, cnu.edu

– In contrast to topdown allocation/distribution● IP address

– Minimal governance; against duplicity

● Global– xyz.ccl.cnu.kr.globe.solar.galaxy

17Oct13 dykim@cnu.kr 4

Flat Local Addressing

● Flat node address– No hierarchy

– No topological significance

– No change inside a given local domain

– No change in moving > inherent local mobility

● Local– No need for governance

17Oct13 dykim@cnu.kr 5

Late Binding and NAT

● Late Binding– ccl<cnu<ac<kr<globe<solar<galaxy

| | | | | |

a1< a2 <a3<a4< a5 < a6 <

● NAT– Norm, not an anomaly

17Oct13 dykim@cnu.kr 6

Consequences

● Governance-free– Minimal for names

– None for addresses

● Inherently scalability– Divide and Conquer

● Inherent local mobility– NAT mobility transversal: engineering challenge

● From e2e to middle-box