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.
No comments:
Post a Comment