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IPNL: A NAT-Extended Internet Architecture. Paul Francis Tahoe Network Remakrishna Gummadi UC Berkeley. Suitable IA Improving IPv4’s scalability size Keeping its property Long-lived addresses,Robustness-statelessness, Address independence, Packet hijacking resistance.

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ipnl a nat extended internet architecture

IPNL: A NAT-Extended Internet Architecture

Paul Francis

Tahoe Network

Remakrishna Gummadi

UC Berkeley

Peifang Zheng

about title
Suitable IA

Improving IPv4’s

scalability

size

Keeping its property

Long-lived addresses,Robustness-statelessness, Address independence, Packet hijacking resistance

Extension of NAT

Modify only hosts and NAT boxes

About title

Peifang Zheng

answer question
Answer Question

Some extension of NAT

Suitable Internet Architecture

?

Peifang Zheng

outline
Outline
  • IPNL basics
  • Key attributes of IPNL
  • Review question
  • Other works
  • Comparison with IPv6
  • Discussion

Peifang Zheng

basic 0 nat
Basic(0)--NAT
  • Network address translation
  • Advantages
    • Connect private network
    • Isolate private network
  • Disadvantages
    • Unaddressable hosts

Peifang Zheng

basics 1 concepts
Topology

Terminologies

FQDN, MRIP, RN, EHIP

Addresses

FQDN,

IPNL address

Local IP, Global IP(composed of MRIP, RN, EHIP)

IPNL Header next…

Basics(1)--concepts

Global

private

frontdoor

private

internal nl-router

private

Peifang Zheng

basics 2 routing
Basics(2)--routing

IPNL Header

Peifang Zheng

basic 2 routing
Basic(2)--routing
  • Knowledge of IPNL host & routers

HOST:

(1)FQDN & EHIP

(2)one or more

nl-routers

Internal nl-router:

(1)its neighbors

(2)FQDN, IP pair list

(3)Routing information

Frontdoor:

Entry for all realms behind it

Peifang Zheng

slide10

DestAddress: M3:R6:H3

Example2: Routing by IPNL addresses

Peifang Zheng

key attributes of ipnl
Key attributes of IPNL
  • Reuse existing infrastructure
  • Utilize FQDN
  • Extend IP address space
  • Isolate site addressing
    • Separate local and global header
    • Realm number independence
    • In-flight IPNL address resolution
    • Location

MRIP RN EHIP

Peifang Zheng

experiment
Experiment
  • Testbed
    • “netperf” benchmark
  • Result
    • Good! No degradation of throughput at all
    • Latency associated with failure connection depends on routes refresh frequency

Peifang Zheng

testbed
Testbed

Peifang Zheng

review question
Review question
  • Maintain characteristics of IPv4
    • Long-lived addresses
    • Robustness
    • Address independence
    • Packet hijacking resistance
  • Solve
    • Scalability
    • Address depletion

Peifang Zheng

slide15

NICE

Peifang Zheng

other works
Other works
  • AVES
    • “A waypoint service approach to connect heterogeneous internet address space” by Eugene Ng, Ion Stoica, Hui Zhang (CMU)
  • TRIAD
    • By D.R. Cheriton, M. Gritter(stanford)
  • IPv6

Peifang Zheng

comparisons with ipv6
IPNL

Completely isolate sites

Less expensive

Simpler transition

Easier security administration

IPv6pure

Less Header rewriting

Simpler auto-address configuration

Comparisons with IPv6

Advantages disappear in

IPv6on4 env

Peifang Zheng

discussions
Discussions
  • EHIP 4 Byte?
  • Too long header?
  • Complexity analysis of IPNL?
    • Routing algorithm
  • Experiment convincing?
  • Does IPNL have a bright future?
  • Quality of the paper?

Peifang Zheng

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