U E D R , A S I H C RSS

CCNA/2013스터디


1.1.

, ,

1.2.

  • , 14:00 - 16:00

2.

  • 7 CCNA

3.

3.1. 2013.3.22

  • OSI 7

      • :
      • Peer to Peer 통:

    • OSI
      • - 한 통
      • -
      • 호호환 - 표
      • - 해하


    • OSI

      7 (Application Layer)
      6 (Presentation Layer)
      5 (Session Layer)
      4 포트 (Transport Layer)
      3 (Network Layer)
      2 (Data Link Layer)
      1 (Physical Layer)

    • Encapsulation
      • 패키 Encapsulation 함.
      • PDU:
      • PDU
        • 트(Segment, 4):
        • 패킷(Packet, 3): / (IP )
        • (Frame, 2): / (MAC )
        • 트(Bit, 1):

  • TCP/IP
    • 4

      OSI 포함. , ,
      포트 , 흐,
      패킷 , , 패킷
      크() 패킷

    • Encapsulation
      • TCP 트 or UDP 패킷 - 트포트
      • IP -
      • -



  • TCP/IP OSI 포함
    TCP/I{ OSI 포함
    포트 / 호환 TCP/IP
    패킷

  • OSI





        • 트 투 포

        • 킷-:
        • 패킷-: 패킷 통해


      • , 흐 , 크 토폴, .
      • LLC 하 : . IP 패킷 포함
      • MAC 하 : 통해
        • MAC : 48트, 12 Hex(16), ,
          • OUI(Organizational Unique Identifier): 24 IEEE , 24 .



      • IP

    • 포트

      • TCP (Transmission Control Protocol) UDP (User Datagram Protocol)


      • CCNA
      • //해


      • , 호화,


      • Web Browser


3.1.1. ?

  • , - ...
  • ?
  • DUMP ?

3.2. 2013.3.28

  • OSI
  • WAN (3) ㅋㅋㅋ
  • Cisco CCNA/CCENT
    • 함 -ㅅ-;;



      • (Transmitter) (Receiver)


    • DSU (Digital Service Unit) CSU (Channel Service Unit)
      • DSU: 환해
      • CSU: 통 ,




    • (Hub)
      • 티포트
      • .

    • , - CCNA





      • . .



      • , 포함하


      • 패킷
      • 토큰 -


      • 티포트
      • :
      • : 하


      • ,
      • 포트 -> 크. 하 ->





        • - / -


      • : 트,
      • :
      • :

3.2.1. ?

  • Cisco CCNA/CCENT ... -_-a

3.3. 2013.3.29


    • , STP, UTP,

    • TIA/EIA-568-A 표

3.3.1. ?

  • -ㅅ-

3.4. 2013.4.4



    • - .
      - , -> 한 해 .
      - 확 .
    • CSMA/CD
      - CS(Carrier Sense) : 호 크함.
      - MA(Multiple Access) : 한 회 .
      - CD(Collision Detection) : ...
      - back-off : 함. .
    • IEEE 802.3
      - ()(signaling )( ).
      - ex) 10Base5 : 10Mbps, Baseband signaling .
      - ex) 100BaseFX : 100Mbps, Baseband signaling .
      - 10, 100, 1000 signaling Baseband, Broadband . (5...), UTP, STP, .
    • IEEE
      - .
      - 10Mbps . IEEE 802.11 .
      - IEEE 802.11 포함해 .


    • - ...

    • - 패 100Mbps (Collision) .
      - (Congestion) .

  • - LAN 100Mbps .
    - server->switch->host switch->host 100Mbps .
    - server->switch .
    - server->switch 1000Mbps() .

  • - (Collision) : .
    - (Jam) : 호.
    - (Late Collision) : .
    - ex) 100M 200M .
    - .
    - CRC :
    - 트(Runt) : CRC 64트( ) .
    - (Jabber) : CRC 1518트( )
  • 토큰
    - 토큰 패 : 토큰 .
    - : 토큰 . .
    - 토큰 , .
    -
    - Active monitor
  • FDDI
    - 토큰 .
    - : (토큰 STP ), (2 ) .
    - .
    - FDDI 크 표 .
  • 토큰 FDDI .

3.4.1. ?

  • ...

  • . 해하 .

3.5. 2013.4.5

  • WAN

  • PPP
    • PPP(Point-to-Point Protocol)
      • , 호


        • IP
        • (IP, IPX )



  • PPP(Point-to-Point Protocol)

      • : NCP(Network Control Protocol)
      • : LCP(Link Control Protocol) WAN
        • LCP
          • : ()
            • PAP..Clear Text - 패 . 2-Way Hand Shake
            • CHAP..MD5 - 패 호화(Chanllenge) -> Response -> Accept/Reject
          • : (Staker, Predictor)
          • : Magic Number Quality Protocol
          • 크:



    • 1 1 1 2 2 4
      Flag Address Control Protocol Data FCS

      • Flag:
      • Address:
      • Control:
      • Protocol:
      • Data: 0~1500
      • FCS:

  • PPP(Point-to-Point Protocol)

      • 태 -> -> Establishing -> LCP 태 Open -> Authenticating -> -> (패하 -> Terminating -> )


      • (택)

      • 크 해



    • 1 router>enable 해 enable(=Privileged) 함 (> #)
      2 router#conf t Config Terminal.. Configuration
      3 router(config)#hostname Router_A Router_A Hostname
      4 Router_A(config)#username Router_B password cisco Router_B
      5 Router_A(config)#interface serial 0 통해 B
      6 Router_A(config-if)#encapsulation ppp
      7 Router_Aconfig-if)#ppp authentication chap 호화()
      8 Router_Aconfig-if)#ip address 10.0.0.1 255.255.255.0 Serial 0 interface ip 10.0.0.1 255
      9 Router_Aconfig-if)#no shut
      10 Router_Aconfig-if)#end

      • .1: 10.0.0.1
      • Router_B

    • PPP debug



      • debug PPP packet: PPP 패킷
      • debug PPP negotiation: PPP
      • debug PPP authentication: PPP PAP, CHAP

      • PPP debug
        : Mar 100:06:37.034:BR0:1LCP:I CONFREQListen id 7 len 17

        msec In/Out ID
        Mar 100:06:37.034: BR0:1 LCP: I CONFREQListen id 7 len 17

3.6. 2013.5.2

  • ISDN
    • : (, , ) 통합해 .
      , 큰 .
    • : . ( )
      (항 )
  • ISDN (표 )

    • - ...

      • - ITU-T I430(BRI), ITU-T I431(PRI)
    • ( . 트)
      Flag(1) Address(1) Control(1) Data(variable) FCS(1) Flag(1)
      - Address .
      SAPI C/R EA TEI EA
      Flag = .
      Address = . ISDN IP .
      Control =
      Data = .
      FCS = check sum.

      • - ITU Q.920, ITU Q.921, ITU-TQ.922, ITU-T Q.923

      • - Router , . .

        • - ITU I.450(ITU Q.930), ITU I.451(ITU Q.931) (Q 2 , 3 )

    • (Reference point, 킴)
      - 편한......
      - R : TA ISDN .
      - S : (ISDN ) NT2 .
      - T : NT1 NT2 .
      - U : NT1 (SP) .
      - TE1(Terminal Equipment type 1) : ISDN (ISDN ).
      - TE2 : ISDN ( 화).
      - TA(Terminal Adaptor) : ISDN (, PC, FAX) ISDN .
      - NT1(Network Termination 1) : OSI 행.
      - NT2 : OSI 3 . concentration 행.
      - SPID(Service Profile Identifiers) : . .
  • ISDN

    • B : . 64kb bandwidth .
      D : signal . 16kb bandwidth .
      - ISBN BRI(Basic)
      - 2B + 1D . 128kbps + 16kbps
      - ISBN PRI
      - T1 : 23B + 1D, 1544Mbps
      - T2 : 30B + 1D, 2048Mbps
    • : 편한...
      1. Call ISDN SPID Call 화, , Call 해.
      2. ISDN SS7(Signalling Systen 7) .
      3. ISDN D .
      4. (end to end) B . .
  • ISDN ( ) : ...
    1. ISDN
    2. ISDN SPID

    3. (Dialer map)
  • ISDN DDR
    - ISDN DDR(Dial on Demand Routing) : ISDN
    - ISDN .
    1. 패킷 ?
    2. 트 홉(Next hop) ( ) .
    3. . ( 해하 )
  • ISDN ( )
    - show interface bri : interface bri .
    encapsulation PPP . PPP encapsulation PPP ISDN encapsulation ISDN .
    - show dialer : ISDN호, , , , Data Link .
    - idle timer : idle time 120sec .

3.7. 2013.5.10







Valid XHTML 1.0! Valid CSS! powered by MoniWiki
last modified 2021-02-07 05:22:40
Processing time 0.1260 sec