Zhongxing MingDan Li

Chumei XiaMingwei Xu

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Contents matter more• Web caching• Multicast, video conferencing• Subscription/publication services• Security and privacy

Addresses matter less• Limited in supply.• Some are non-reachable, e.g., private v4, or

isolated v6.• More and more are moving.

Quite a few proposals to make network content centric rather than location centric.

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Youku

YouTube

SIONA router

P = 202.106.30.4S = Video StreamingI = Harry Potter

IP: 202.106.30.4

IP: 59.72.38.236

S = Video StreamingI = Harry Potter

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• P: IP address• S: Service• I: Information• O: Offset• L: Length• F: flag

P(IP) : S(Service) : I(Information) O(Offset), L(Length), F(Flag)

Data Name Attributes

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5. Request(P, S, I)1. Register(P, S, I)

1. Register(P, S, I)

2. Disseminate route

2. Disseminate route

3. Request(P, S, I) 4. Request(P, S, I)

4. Request(P, N)5. Request(P, S, I)

7. Data

7. Data

9. Data

9. Data

8. Cache data

8. Cache data

10. Cache data

11. Data

12. Request(P, S, I)

13. Data 13. D

ata

Server

Server

Client

Client

Client

12. Request(P, S, I)

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•RT: Registration Table•DS: Data Store•FIB: Forwarding Information Base•RIT: Request Interface Table

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YouTube

PC

Harry Potter

1~20min

21~50min

51~70min

71~90min

91~120min

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Cell A Cell B

Internet

Cell A Cell B

Internet

Mobile IP SIONA

BS A BS B BS A BS B

ID/Locator split mechanisms try to solve this problem, but they all introduce new indirection, or require some form of rendezvous points to keep reachability.

SIONA provides multihoming functionality without path indirection, nor any rendezvous point.

Nodes just issue register and request packets using whatever interface they like, and the routing and forwarding mechanism of the network ensures the packets to reach the right destination.

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Simulation Topology

Base_ttl = 10 Base_ttl = 30

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server 1

server 2client 2

client 1

Router 1 Router 2

Zipf distribution

Simulation Duration

# of cache hit

SIONA is built on name-based content routing paradigm as is advocated in CCN/NDN.

We differ from CCN/NDN in several ways: SIONA closely keeps the ties to IP.• more like a complementary function of today’s IP network• multi-source multicast and network layer P2P

SIONA differs from DONA in the way that is a tree based architecture, while SIONA is not. SIONA also has different name resolution scheme and routing mechanism.

SIONA gives particular focus on services except for information.

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Content Centric Network is an exciting area in future Internet research activities.

SIONA provides a promising candidate for ICN• Scalable name-based data delivery• Inherent support for mobility and multihoming• Compatible with IP• Multi-source multicast• Network layer P2P• Coordinate caching mechanism

Working in progress23/4/10Tsinghua University

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Thank you

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