Friday 21 August 2015

How Hub Differ from Switch



In computer networks devices that perform their function within the network are switches and hubs. Hub is a broadcast device and does not perform an intelligent function. Hub receives a packet from a device in the network and broadcast that packet all over the network.

All devices connected to the hub receive that message and process the message. Concern device continue with further processing and other devices discard the packet. This makes the network and the devices with in the network mostly busy. Hub is unaware of the identity of devices connected to its ports. 

Whereas switch is an intelligent device compare to hub. Like hub switch only broadcast when it turn on or new devices connected to its ports. Switch is an intelligent device it keeps the MAC address information of the devices in its MAC table. In MAC table switch keep the MAC address entry with respect to the port this device is connected. When switch receives a packet from a device with in the network, switch process the packet, read the MAC address of the destination device. Check in its MAC table about the port number with which that MAC address is connected and transfer the packet toward the device.

Switch and hub are used to connect the devices with in the network to connect two different networks router is required. If you have short budget then in the market there are many companies offering sell used Cisco routers and switches. Cisco is best choice for the network whether it is new device or some refurbished Cisco routers.

Thursday 25 June 2015

Recover your investment from used Cisco equipment


Cisco is a networking company, Cisco devices are being used in almost every network. When you decide to upgrade the network old devices in network are extra and there is no use for those devices in the network. Placing them in store room cannot give you any benefits beside this they occupy space that you can use for any type of stock or useful inventory storage. A decision that generates money for you is sell used Cisco devices.

Selling used Cisco equipment is more beneficial for you when you have knowledge about used Cisco devices, market demand and rates. Placing your equipment ad on a marketplace where they can’t give you idea about the market doesn’t give you any benefits as compare to, when you contact to a professional used Cisco reselling company and they can better evaluate your devices according to market rate. Cisco reselling companies make sure they can buy and sell devices on the cost of their condition and performance.