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網路通訊系統與應用實驗室 A. A dvanced N etwork T echnology and S ervice Laboratory. 指導老師: 孫 雅 麗 教 授. Projects. Hierarchical Mobile IPv6 (HiMIPv6) Flexible Packet/Content Classification Smart AP QoS Router Intel IXP 1200 Network Processor Virtual Private Network.

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slide1

網路通訊系統與應用實驗室 A

Advanced Network Technology and Service Laboratory

指導老師:孫 雅 麗 教 授

projects
Projects
  • Hierarchical Mobile IPv6 (HiMIPv6)
  • Flexible Packet/Content Classification
  • Smart AP
  • QoS Router
  • Intel IXP 1200 Network Processor
  • Virtual Private Network
what is mobile ipv6
What is Mobile IPv6?

Foreign Network

(交大)

Internet

Router

Correspondent Node

(某FTP站臺)

Home Agent

(台大)

Mobile Node

(使用者)

data flow

what is binding update ack
What is Binding Update & ACK?

Foreign Network

(交大)

Internet

Router

Correspondent Node

(某FTP站臺)

Update MN’s

new address

(Care-of

Address)

Only have MN’s

Home

Address

Home Agent

(台大)

data flow

Mobile Node

(使用者)

binding update

binding ACK

problem
Problem:
  • If RTT too large, real-time connection may break
    • VoIP, VOD, …
slide7

Foreign Network

Router1

Internet

CN

Router3

Router2

HA

Router4

Router5

Router6

Router7

MN

slide8

Foreign Network

CN

Router1

Internet

Router3

Router2

HA

Router4

Router5

Router6

Router7

MN

existing connection

binding update

slide9

Foreign Network

CN

Router1

Internet

Router3

Router2

HA

Router4

Router5

Router6

Router7

MN

binding ACK

slide10
A new agent is introduced ─ Foreign Mobility Agent (FMA)
    • Root-FMA, Switch-FMA, Leaf-FMA
  • Construct a hierarchical architecture
slide11

Foreign Network

Internet

R-FMA

CN

FMA1

FMA2

HA

L-FMA1

L-FMA2

L-FMA3

L-FMA4

MN

slide12

Foreign Network

CN

Internet

R-FMA

FMA2

FMA1

HA

L-FMA1

L-FMA2

L-FMA3

L-FMA4

MN

existing connection

binding update

slide13

Foreign Network

CN

Internet

R-FMA

FMA1

FMA2

HA

L-FMA1

L-FMA2

L-FMA3

L-FMA4

MN

existing connection

binding ACK

what is himipv6 project going to achieve
What is HiMIPv6 project going to achieve?
  • Implement the Hierarchical architecture, using our special design
    • Linux base
    • Hy bit, root FMA information option,

Ro bit, Receiver Home Address option,

Visitor List

  • Avoid unnecessary traffic over the Internet.
  • Handoff
    • Minimize registration time.
    • Improve Mobility.
slide15
Handoff with Authentication
    • long handoff latency may result in packet loss
    • hierarchical scheme can reduce handoff latency
  • Buffer management on FMA
    • Intra-domain security
    • Handoff behavior of MN
    • Goal
      • Minimal buffer space
      • Minimize packet loss rate
      • Capacity ( scalability )
      • High-speed movement handoff
flexible packet content classification1
Flexible Packet/Content Classification
  • The places where we can apply classifier:
    • Leaf-FMA
    • CN
    • Root-FMA
    • HA
  • The characteristics of Classifier:
    • Different fields
    • Number of fields
    • Different stages
slide18

Foreign Network

Receiver

Home

Address

Option

Internet

R-FMA

Receiver

Home

Address

Option

CN

FMA1

FMA2

Binding

Update

HA

Binding

Update

L-FMA1

L-FMA2

L-FMA3

L-FMA4

MN

slide19
Classifier is a module in a router.

classifier

Mobility

Firewall

Router

classifier
Classifier
  • Function : check the packet information to classify this packet.

classifier

Mobility

Firewall

Router

slide21
We designed a flexible internet Packet/Content classification
  • In our design
    • Support Multi-Stage
    • Support Multi-Dimensional
    • Dynamic
    • Script Language assisted
    • Flexible in packet field
classifier1
Classifier

目的:flow-based classifier

第一階段:利用IPv6欄位來分辦flow

  • 若destination為國內則傳送。
  • 若destination為國外則進從第二階段過濾。

第二階段:利用其他欄位分辦flow等級

  • 高的使用者封包將以high priority傳送等級
  • 低的使用者封包將以low priority傳送
classifier3
Classifier
  • 目的:管理宿網對外的流量

第一階段:檢視此封包所要前往目的地

    • 若destination為國內則傳送。
    • 若destination為國外則進從第二階段過濾。

第二階段:檢視發出此封包的使用者等級

    • 等級高的使用者封包將以high priority傳送
    • 等級低的使用者封包將以low priority傳送