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Design of SNACK Mechanism for Wireless TCP with New Snoop (PowerPoint)

VIEWS: 22 PAGES: 11

									                    APMan
               (Detailed Design)

                 Mobile Networking Lab.
                          2006. 5. 3

             Student ID          Student name
             20063320            Wan-Sun Im
             20055063            Seong-Ho Kim
             20062602            Deok-Jin Kim


2006-03-20                   1
Contents

 Overview
 APMan
      System Architecture
      HostAP MIB Design
      User Interface (UI) design
      Platform




 2006-03-20                        2
Overview

 IEEE 802.11 WLAN
      이동 노드는 Access Point (AP)를 통해 무선으로 통신을 할 수 있음
      인접한 AP들은 되도록 서로 다른 주파수 대역을 사용해야 하고, 이
      동 노드는 중첩지역에 있더라도 하나의 AP에만 접속을 유지함




 2006-03-20              3
Overview

 Motivation
      Multi-vendor AP (ORiNOCO AP, Cisco Aironet AP, SAMSUNG
      magicLAN AP, etc)들의 통합 관리 시스템의 부재



 Goal & Proposal
      통합 AP (multi-vendor) 정보 관리 시스템 구축
        • Target APs
              – ORiNOCO AP
                  » SNMP Support – MIB II, IEEE 802.11 MIB and ORiNOCO MIB
              – HostAP
                  » No SNMP Support – HostAP MIB design 필요




 2006-03-20                            4
Test Topology

                                   WEB access

                    USER                                  NMS       DB &
                                                         Manager   RRD files




                                     Router



                                                    ORiNOCO
                                                      AP1 SNMP
                                                            MIB
              ORiNOCO             HOST
                AP2 SNMP           AP1 SNMP
                      MIB               MIB

                                                      MN5



              MN1           MN2   MN3         MN4


 2006-03-20                              5
APMan System Architecture
 Scheduler
                                                                WEB browser


 SNMP Processing
                                                    HTTP Server
 Module
                                                                                 ORiNOCO
 Alive Check Module                                                 SNMP
                                                                  Processing
                                                                                    AP

                                                                   Module




                                            Processing Module
 Data Processing




                                                  DATA
                                                                  Scheduler
 Module
                         DB (MySQL)
      FCAPS                    &                                  Alive Check     HostAP
                       RRD files (JRobin)                           Module


 Data Management
 Module                                            SNMP Manager                 SNMP Agent
      DB & RRD files

 2006-03-20                     6
Managed Information in AP
 관리 될 정보
      일반 정보
        • DB에 저장, table형태로 표현
        • Configuration Information
                – AP위치, 이름, contact 정보 등의 AP system information
                – AP interface information
                    » Interface, SSID,사용 channel, operation mode(802.11a/b/g), TxPower etc
                – AP의 host information
                    » Mac, IP address, RxPower from host etc
        • Fault Information
                – SNMP operation success/fail
                – PING operation success/fail


      통계 정보 (Performance Information)
        •     RRD (Round Robin Database) files에 저장, Graph형태로 표현
        •     노드 별 packet in/out
        •     AP total packet in/out
        •     AP의 시간 별 사용자 수


 2006-03-20                                     7
HostAP MIB Design
                                 MIB II (RFC 1215) 기반
 Host AP system information


                                 ORiNOCO MIB기반



 Host AP interface information


                                      ORiNOCO MIB기반


 Host AP로부터 service받는
 station들에 대한 정보


 2006-03-20                8
Configuration Information View
          Network Management System for Access Point


          APMan                    AP Information & Node List


                 AP Information                                                                      Home          Web Page

                      Host Name                        IP Address                   Status                   Description

                         AP4                           141.223.84.31                    ...                      ...


                       Mac Address                        ESS ID               PowerStrength             Channel Number

                             ...                            ...     Set              …         Set                 ...     Set


                    Node List
                                                                                              Performance of AP

                 Node Name                 IP Address                     MAC Address                Power

                     MN1                       ...                            ...                      ...               Performance
                     MN2                       ...                            …                        ...               Performance
                     MN3                       ...                            ...                                        Performance
                     MN4                       ...                            ...                      ...               Performance




 2006-03-20                                                               9
Performance Information View
         Network Management System for Access Point


         APMan                          Graph of Information

               Bits In/Out                                     Total bits In/Out   Home




              The number of
                  Users




 2006-03-20                                                    10
Implementation platform
- NMS manager
           구분                      관련 Tool                    비고

    Architecture                  Web 3-Tier

           O/S                       Linux

   Web Server/                     Apache/          Web server based on java
   Web Container                   Tomcat
Database         General            MySQL

                 Statistics    JRobin (RRD files)        Java용 RRDTool

Language          Client      HTML & Java(Applet)   Applet (Otter) : Node Map
                                                          Other : HTML

                  Server             Java               Ping : using JNI

 Chart           Statistics         JRobin             Java용 RRDRRDTool




   Communication                    Socket          Monitoring & Notification

         SNMP                        None           AdventNet SNMP Library



 2006-03-20                              11

								
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