Other Network Devices

فهرست عناوین اصلی در این پاورپوینت

فهرست عناوین اصلی در این پاورپوینت

● VLANS
● Other Network Devices
● Brouters
● Gateways
● Network Devices
● A Caveat
● VLANS
● VLAN Example

نوع زبان: انگلیسی حجم: 0.45 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 22 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/06/07 08:27:45

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

., vlan, network, layer, switch, datum, link, gateway, lan, port, d, s,

توجه: این مطلب در تاریخ 2019/06/07 08:27:45 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://nicngl.nic.in/ppt/vlans.ppt

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., vlan, network, layer, switch, datum, link, gateway, lan, port, d, s,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

vlans examples client in a wants to contact server in a or b first a review problem subnet mask ۲۵۵.۲۵۵.۲۵۵. other network devices brouters are devices that combine the functions of both bridges and routers. these operate at both the data link and network layers. a brouter connects both same and different data link type network lan segments. it is as fast as a bridge for same data link type networks but can also connect different data link type networks. brouters gateways gateways operate at the network or application layer and use network layer addresses in processing messages. gateways connect two or more lans that use the same or different usually different data link and network protocols. the may connect the same or different kings of cable. gateways process only those messages explicitly addressed to them. gateways gateways translate one network protocol into another translate data formats and open sessions between application programs thus overcoming both hardware and software incompatibilities. a gateway may be a stand alone microcomputer with several nics and special software a front end processor fep connected to a mainframe computer or even a special circuit card in the network server. gateways one example for a gateway is to enable lans that use tcp ip and ethernet to communicate with ibm mainframes that use sna. the gateway provides both the basic system interconnection and the necessary translation between the protocols in both directions. another common setup is for a gateway to also act as a proxy server firewall or email translator. more on this later gateways hub physical all transferred s d same same bridge data link filtered using s d same same data link layer addr. switch data link switched using s d same same data link layer addr. router network routed using s d s d same network layer addr. brouter data link filtered routed s d s d same network gateway network routed using s d s d s d application network layer addr. physical data link network device operates at messages layer layer layer network devices a caveat the terminology used in the marketplace may differ substantially. one vendor’s bridge may provide the functions of a router. multiprotocol bridges translate between different data link layer protocols. multiprotocol routers can understand several different network layer protocols. protocol filtering bridges multiprotocol bridges that forward only packets of a certain type. encapsulating bridges connect networks with different data link protocols. layer ۳ switches ip switches can also switch messages base on their network layer address. example the opryland now opry mills network virtual lan design switches also have enabled the creation of virtual lans vlans . vlans provide greater opportunities to manage the flow of traffic on the lan and reduce broadcast traffic between segments. vlans are groups of computers in an intelligent switched network. before getting into vlans let’s revisit switches … basic switches intelligent switches intelligent switches support larger networks than the basic switch’s ۸ or ۱۶ port lans. as well as being able to support far more computers or network connections the key advantage is in the modularity of intelligent switches might add an atm fiber module . these switches often can support several hundred ports spread over a dozen or more different modules. for most switches there is not enough capacity in the switching fabric backplane to support all ports if they become active so the switch forms groups of connections and assigns capacity using time division multiplexing. this means that the switch no longer guarantees simultaneous transmission on all ports but will accept simultaneous input and will switch incoming data to outgoing ports as fast as possible. the groups are called vlans intelligent switches vlans vlans can be seen as analogous to a group of end stations perhaps on multiple physical lan segments that are not constrained by their physical location and can communicate as if they were on a common lan big wins broadcast traffic is limited to the vlan consider a big network across an entire campus on ۱ switch there would be too much broadcast traffic vlans can be assigned and managed dynamically without physical limitations vlan can be used to balance bandwidth allotment per group port based vlans layer ۱ vlans port based vlans use the physical port address to form the groups for the vlan. it is logical to connect computers that are physically close together on the lan into ports that are physically close together on the switch and to assign ports that are physically close together into the same vlan. this is the approach used in traditional lan design physical location determines the lan but is not always the most effective approach. port based vlans vlans used to balance capacity against network traffic vlan example mac based vlans layer ۲ vlans mac based vlans use the same data link layer addresses to form the vlan groups. the advantage is that they are simpler to manage when computers are moved. ip based vlans layer ۳ vlans ip based vlans use the network layer address i.e. tcp ip address to form the vlan groups. layer ۳ vlans reduce the time spent reconfiguring the network when a computer is moved as well. some layer ۳ vlans can also use the network layer protocol to create vlan groups. this flexibility enables manager even greater precision in the allocation of network capacity. application based vlans layer ۴ vlans application based vlans use the application layer protocol in combination with the data link layer and network layer addresses to form the vlan groups. the advantage is a very precise allocation of network capacity. …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., vlan, network, layer, switch, datum, link, gateway, lan, port, d, s,

این فایل پاورپوینت شامل 22 اسلاید و به زبان انگلیسی و حجم آن 0.45 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/06/07 08:27:45 استخراج شده است.

http://nicngl.nic.in/ppt/vlans.ppt

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