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الموضوع: ممكن توضيح(Network Segmentation Facts)

  1. #1
    عضو برونزي الصورة الرمزية mahmoud saad
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    ممكن توضيح(Network Segmentation Facts)



    بشوف شرح تيست اوفى شهادة N+وهوه اكثر من رائع بصراحه ولكن محتاج توضيح ل
    Network Segmentation Facts

    لانه مش شارحه غير فى النص المقالى ومالهوش فيديو اتمنى من الاخوه توضيح النقاط التاليه اللى هى مشروحه فى النص




    Network Segmentation Facts



    http://www.4shared.com/file/40898424...ified=df8b50d3


    وده النص المقالى الموجود فى تيتس اوت اتمنى انكم تساعدونى

    ]جزاكم الله خير ا

  2. #2
    عضو برونزي الصورة الرمزية mahmoud saad
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    رد: ممكن توضيح(Network Segmentation Facts)

    Network segmentation is the process of dividing the network to overcome problems and increase network performance, maximize bandwidth, and reduce congestion. As you segment the network, you will need to consider the collision and broadcast domains on the network.
    [LIST][*]A collision domain is any network or subnetwork where devices share the same transmission medium and where packets can collide. Collisions naturally increase as the number of devices in a collision domain increase.[*]A broadcast domain is any network or subnetwork where computers can receive frame-level broadcasts from their neighbors. As you add devices to a network segment, the amount of broadcast traffic on a segment also increases. Note: A special condition called a broadcast storm happens when broadcast traffic is sent, regenerated, and responded to. In this condition, the amount of broadcast traffic consumes network bandwidth and prevents normal communications. Faulty devices or improper configuration conditions can lead to a broadcast storm.[/LIST]
    Segmentation may increase the number of both the collision and broadcast domains. Membership within collision or broadcast domains differs depending on the connection device used



    Device
    Collision Domain
    Broadcast Domain
    Hub
    All devices connected to the hub are in the same collision domain.
    All devices are in the same broadcast domain.
    Bridge or Switch
    All devices connected to a single port are in the same collision domain (each port is its own collision domain).
    All devices connected to the bridge or the switch are in the same broadcast domain.
    Router
    All devices connected to a single interface are in the same collision domain.
    All devices accessible through an interface (network) are in the same broadcast domain. Each interface represents its own broadcast domain if the router is configured to not forward broadcast packets.


    In considering a network expansion solution, it is important to identify the connectivity problems you need to resolve, and then identify the device that is best suited for that situation. The main differences between routers, switches, and bridges is the range of services each performs and the OSI layer at which they operate.
    Device
    Characteristics
    Router
    Routers perform the following functions that are not performed by bridges or switches.
    [LIST][*]Route packets between separate networks[*]Modify packet size through fragmentation and combination[*]Route packets based on service address[/LIST]
    Choose a router if you need to:
    [LIST][*]Connect your network to a WAN, such as the Internet[*]Filter broadcast traffic to prevent broadcast storms[*]Connect two separate networks that use the same protocol[*]Improve performance in the event of a topology change (routers recover faster than bridges or switches)[*]Reduce the number of devices within a broadcast domain (effectively increasing the number of broadcast domains)[*]Enforce network security[*]Dynamically select the best route through an internetwork[*]Connect two networks of different architectures, for example Ethernet to Token Ring[/LIST]
    Switch
    Choose a switch if you need to:
    [LIST][*]Provide guaranteed bandwidth between devices[*]Reduce collisions by decreasing the number of devices in a collision domain (effectively creating multiple collision domains)[*]Reduce the number of devices within a broadcast domain (creating multiple broadcast domains on a switch is done by using virtual LANs (VLANs))[*]Implement full-duplex communication[*]Connect two network segments or devices using the same protocol[*]Provide improved performance over a current bridged network[*]Switch traffic without the cost or administration involved with routers[/LIST]
    Bridge
    Choose a bridge if you need to:
    [LIST][*]Isolate data traffic to one network segment[*]Route traffic from one segment to another (with the same network ID)[*]Link unlike physical media (e.g. twisted pair and coaxial Ethernet) of the same architecture type[*]Link segments that use the same protocol[*]Create segments without the expense and administration of routers[/LIST]
    Note: In most cases where you might use a bridge, choose a switch instead.
    In general, follow these guidelines to make decisions about the appropriate connectivity device.
    [LIST][*]Use a bridge to segment the network (divide network traffic) and to provide fault tolerance.[*]Use a switch to reduce collisions and offer guaranteed bandwidth between devices.[*]Use a router or a switch with virtual LANs (VLANs) to filter broadcast messages, implement security, or connect different networks.[/LIST]








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  3. #3
    عضو برونزي الصورة الرمزية mahmoud saad
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    رد: ممكن توضيح(Network Segmentation Facts)

    مفيش حد عايز يساعد ولا ايه
    منتظر يا اخوانى ؟؟؟؟؟

  4. #4
    عضو برونزي الصورة الرمزية mahmoud saad
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    رد: ممكن توضيح(Network Segmentation Facts)

    ولا واحد عارفها مش معقوله
    على العموم جزاكم الله خيرا وكنت متوقع منكم انكم تساعدو
    مافيش مشكله

  5. #5
    عضو
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    رد: ممكن توضيح(Network Segmentation Facts)

    يا أخ محمود, عملت ملف pdf موجود فيه اللي تطلبه مع الصور وبالعربي كمان, بس للاسف مش قادر ارفعه مع الرد, يطلع لي خطأ, ارسل ايميلك لي على رسالة خاصة عشان ارسله لك.

  6. #6
    عضو برونزي الصورة الرمزية mahmoud saad
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    رد: ممكن توضيح(Network Segmentation Facts)

    اخى جزاك الله خيرا والله مش عارف اقولك ايه
    ربنا يجازيك خيرا
    واعزرنى فى التاخر فى الرد لان النت كان فاصل عندى شكرا ليك يا اخى

  7. #7
    عضو
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    رد: ممكن توضيح(Network Segmentation Facts)



    لاتتردد في طرح الإستفسارات.

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