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معدات ربط الشبكات Networks connecting Devices

  1. #11
    عضو

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    شكرا والله اتحفتينا بهذه المعلومات


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  2. #12
    عضو فعال جداً

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    شكرا لك عالمجهود الرائع

    تحياتي

    Mdream


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    MDREAM






    ملتقى المهندسين العرب

    منتدى التحكم الرقمى بإستخدام الحاسب (CNC)




    MDREAMES*YAHOO.CO.UK



  3. #13
    جديد

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    لعل هذا مفيد

    The Wire to the Internet

    . Network Model . Network Layer Protocols . HTTP, FTP, ... . Network Infrastructure . Cabling, Hubs, … . PC Hardware . PCI, PCMCIA, …. .





    Demo
    People Don’t Need To See Paula Abdul





    . A 4 Layered Network View
    . Physical
    . Data (MAC addr, switching)
    . Network (IP addr, routing)
    . Application (65K conversations possible via
    Ports)
    . Think like a network device, not the User!
    .
    A MAC address is unique for each Network Card (NIC).
    .
    IP addressing

    .
    Reserved address space

    .
    10.x.x.x Class A

    .
    172.16-31.x.x Class B

    .
    192.168.x.x Class C

    .
    What address to use?

    .
    If is isn’t reserved, you may not get out

    .
    Requesting address space

    .
    ICANN or your ISP

    .
    DHCP

    .
    DNS issues

    .
    IPv6 vs IPv4

    .
    Vendor support

    .
    Is it a real User requirement?
    .
    Operating System Support

    .
    Remote logins, “shrink wrap” support, file portability, etc

    Decimal2Binary

    . What Protocols? . The Internet as most see it (http, https) . File sharing (FTP, SMB) . Terminal Access (Telnet, SSH, X11) . Email (smtp, pop, imap)
    . Network Address Translation (NAT) . We all connect as one! . Do you need to NAT?
    . Myth: Proxy servers or firewalls . One way Firewall? . I can see you, hopefully you can’t see me.
    . Network Elements
    . Cables (voice/data)
    . Hubs and Switches
    . Routers and Firewalls
    .


    Network Design
    . Topology
    . Bandwidth
    . Applications
    . House wiring
    . Dial tone = 48 volts
    . Ring = up to 150 volts
    . Color Pairs
    . Why talk about phone wiring?
    . Networks start from the wire
    . Most older buildings have legacy wiring
    . Do you reuse the building wiring?
    Your House Wiring
    Pair 1
    Pair 2


    Green
    Yellow
    Tip

    Red
    Black
    Ring


    . Color blind? . Primary Colors/Secondary Colors of bundles . Data cable colors you need to know. (Secondary Colors) . Do you have to remember colors?
    . Today most network connects are CAT5 and come color coded.
    Primary
    Secondary
    Colors
    Colors
    White
    Blue
    Red
    Orange
    Black
    Green
    Yellow
    Brown
    Violet
    Grey (Slate)


    100 Pair Cable Bundle Tag Colors
    Bundle Num (pair #)
    Tagged Color Wrap

    1 (1-25)
    Blue

    2 (26-50)
    Orange

    3 (51-75)
    Green

    4 (76-100)
    Brown


    . What is the difference between Cat 3, 5, 6
    . Cables you need to know how to make (Straight Through and Crossover)
    . Tools of the trade (toner, crimper, cable checker, scissors)
    Straight Through Cable Crossover Cable
    RJ-45 PIN
    RJ-45 PIN
    1 Rc+
    3 Tx+
    2 Rc
    6 Tx
    3 Tx+
    1 Rc+
    6 Tx
    2 Rc-


    RJ-45 PIN
    RJ-45 PIN
    1 Tx+
    1 Rc+
    2 Tx
    2 Rc
    3 Rc+
    3 Tx+
    6 Rc
    6 Tx



    . Hubs . All for one, one for all . Repeater
    . Switches . Forwarding based on MAC (bridge) . Auto-negotiation (speed/duplex) . In-line power . Segmentation (vlans) . How are they managed?
    . Embedded Web servers
    . SNMP (Simple Network Management Protocol)


    . What can be managed . Interfaces, Auto-negotiation, segments, broadcasts, etc. . Routing?
    . Routers . Forward packets based on Network addresses . Routing protocols . IP addresses/subnets . Broadcast domains . Software vs. ASIC
    . FreeBSD, RedHat Linux, etc . Cisco, Linksys, Nokia, etc. . Firewalls . Traffic analysis is based on SRC/DST IP addresses, ports, and/or
    packet *******s.
    . NAT
    . Inbound/outbound Access Control Lists (ACL)
    . Software vs. ASIC
    Wired vs. Wireless

    Media Types (Coax, Twisted Pair, Fiber,
    Wireless, Dialup?)
    Security – is it a concern?
    Speed – How fast is fast!
    .
    Remember that the slowest link in the network is
    the base speed all hosts will talk.
    Your cable plant
    .
    What type of media?
    .
    Wireless? What is your channel plan?

    Types . PCI . PCMCIA . USB
    To install the hardware use these general
    rules: . PCI – install the card first, then software . PCMCIA and USB – install the software first, then
    the hardware
    3COM Setup Linksys Setup PCI Card Setup
    . Setup a wireless access point . Web interface
    . Ping test . PC connected via Cat5 to Access Point . PDA connected via Wireless
    . Overview of network level protocols, architecture, and design
    . “Under the Hood” look at real network components
    . Demo of configuration and operation of wireless and wired links



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  4. #14
    جديد

    User Info Menu

    السلام عليكم
    المعلومات جميلة جدا ولكن اتمنى التواصل بما هو امتداد لهذه المعلومات ولك الاجر والثواب
    شكرا جزيلا


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  5. #15
    جديد

    User Info Menu

    thanks
    for you


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  6. #16
    جديد

    User Info Menu

    thanks

    thanks for you on this importannt iformation
    please moreeeeeeeeeeeeeee


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  7. #17
    عضو

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    معلومات جيدة استفدت منها كثيرا جزاك الله خيرا

    م/ يحيى الكاف


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  8. #18
    عضو فعال

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    thank you very much

    dear


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  9. #19
    عضو

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    thanks man for this important information


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  10. #20

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