HP 2510 24G SWITCH PDF

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Limited to maximum five units per order or transaction. Cannot be used with any other offer. It is a networking technology that, like the older dial up modem technology that proceeded it, works over standard telephone lines. Unlike modems, it is completely digital and offers broadband class performance. Additionally, it still allows the telephone line to be used for voice calls even when the ADSL connection is in use. The service is asymmetric, meaning that the rate you can send information is different from the rate at which you can receive it.

In almost all cases you can receive at a faster rate than you can send because domestic internet use tends to involve far more downloading than uploading. Bandwidth A measure of performance for a network connection. It can also be referred to as bit rate, data rate, or baud rate, and is measured in bits per second, kilobits thousands of bits per second or megabits millions of bits per second.

Data rate See Bandwidth Ethernet Ethernet is the standard computer networking technology, used today in nearly all forms of computer networking. It comes in two main forms, wired Ethernet using cables similar to telephone cable to connect computers and and network devices, and wireless Ethernet which uses radio signals to transmit data over short ranges.

Ethernet has been around for a long time and has evolved over the years, but most versions of wired ethernet use the same style of connector and are broadly compatible though all devices on a particular section of a network can only communicate at the speed of the slowest node on the network.

Very old versions of Ethernet use a different cable and connector and are not compatible with current versions without adaptors. Firewall A firewall is a hardware device or a piece of software that monitors and limits access between a computer and the network it is attached to. Firewalls are considered a vital line of defence for computers connected to the internet, and no computer should be put online without a firewall to protect it.

Many routers also incorporate a firewall. These terms are used to express the frequency of an electronic or radio signal, for example wireless networking systems work in a 2. Interface How a computer interconnects with the network it is attached to. The interfaces typically in use today are wired over ethernet cabling, or wireless using one of the Infrared Communication IrDA Infrared Data Association is a wireless networking standard based on infra red light, similar to television remote controls.

It is a short range system that requires a direct line of sight between the communicating devices. It is popular on mobile phones, PDAs and other portable equipment. It was a precursor to ADSL. Like ADSL it provided a way of using standard telephone lines to transmit digital data, provided an always-on capability and allowed voice and data communication at the same time. It was, however, considerably slower and more expensive to install and run than ADSL. While the term "Local Area" is not well defined, it tends to describe a network that covers a single room or a single building.

LANs are built using Ethernet either using wired or wireless interfaces and allow several computers to exchange email with other machines on the LAN and share files and resources such as laser printers or internet access. There is some overlap between the concepts of LANs and Intranet, though an Intranet can cover a much wider area and tends to be confined to an organization rather than a physical location. Mbps See Bandwidth Network The connecting of two or more computers together in order to exchange data and share resources.

A network can range from two computers connected by a cable all the way up to the global internet. Parallel transmission A data transmission method where several bits are transmitted simultaneously along several conductors running in parallel to each other. It is therefore a protocol for enabling the establishment of Virtual Private Networks.

Routing Protocol A routing protocol is a protocol that specifies how routers communicate with each other to disseminate information that allows them to select routes between any two nodes on a computer network while the choice of the route is done by routing algorithms. Typically, each router has a priori knowledge only of its directly attached networks. A routing protocol shares this information successively, first among immediate neighbours and then throughout the entire network.

This way routers can gain knowledge of the network topology at large. This process happens entirely automatically, and allows internet traffic to route itself around damaged or degraded parts of the internet. Serial Transmission A data transmission method where data is transmitted as a stream of bits, one bit at a time along a single conductor or other transmission media. This has advantages over parallel transmission as the single data channel is cheaper than the multiple data channels of parallel systems, and several synchronization problems that can occur in parallel transmission systems are avoided in serial.

USB and wired ethernet are examples of serial transmission systems. Tunnelling Tunnelling is the process that allows for the sending of network traffic that needs to be secure over an untrusted network, such as the public internet.

The tunnel provides a secure encrypted connection between two computers in order to allow unencrypted traffic of a different type to be transmitted safely across the connection. For example, the Windows File and Printer Sharing protocol does not support encryption and is therefore insecure, but if you use a tunnel then you can safely use this service without fear of your network traffic being intercepted.

Tunnelling allows for Virtual Private Networks to be deployed over public networks. Virtual Private Network A Virtual Private Network VPN is a private network between computers where some or all of the nodes in the network are connected using an open public network, such as the public internet. However, all communication between these computers remains private because it runs over a secure encrypted tunnel, meaning that traffic on the network cannot be intercepted by other machines on the network that are not part of the VPN.

While the physical network that connects the machines is public, the virtual network that exists between them is private because the traffic is unreadable to any computer that is not part of the VPN.

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Aruba 2540 Switch-Serie

В ProCurve поддерживается фильтрация вывода, хотя в подсказках командной строки эти команды не отображаются. То есть, если набрать знак вопроса или табуляцию, то команда не продолжится. Но она работает. Поддерживается фильтр begin сокращенно beg или b. Отобразить конфигурационный файл начиная со строки в которой встречается слово router: sw config sh run beg router router ospf area backbone exit router pim exit router vrrp router vrrp virtual-ip-ping snmp-server community "public" unrestricted vlan ip ospf

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HP 2510-24G Switch - switch - 24 ports - managed - rack-mountable Specs & Prices

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