The minimum number of ports on most brands of switches is four. While there is no industry rule that limits the number of ports on a single switch, practical application has shown that a minimum of four ports is about right.
there are 8, 16, 48 ports in network switch
48
Connect the broadband connection to a router, and connect the router ports to the individual systems. If necessary, extend the number of ports on the router by attaching a switch to one of the router ports and attaching multiple clients to the switch.
To switch frames between ports.
In LAN we can add as many system depending upon the number of ports in switch and how many switches you are using.
A switch cannot function as a router. But you can plug a switch in to one of the ports on the router if you need additional ports.
max=number min=number counter=1 start while(counter<=3) read number start if max<number max=number else if min>number min=number end while write max write min /*modify the counter switch according to the number of values being compared if required*/
A router will typically support between 4 and 8 ports. For additional ports, a standard Ethernet switch can be connected to one of the ports.
The difference between an ethernet bridge and a switch is that the bridge only has two ports, while the switch has multiple ports. When there is a lot of traffic going through the ports, the bridge traffic may get tied up or crash often because there are only 2 ports for information to travel back and forth.
Unused ports in a switch should be disabled to prevent an attacker from using the port to attack the network from the inside, or to "listen" in on data conversations.
A switch. Each port has a separate path to each of the other ports on the switch. On a hub, all the ports are tied together into 1 single port. Think of a switch as an 4 lane freeway with 8 entrances and exits; a hub is a one lane highway with the same 8 entrances and exits. It can pass data from only one port to another port- switch can connect 4 ports to the other 4 ports (or 8 to 8 or 16 to 16, you get the idea) A switch is quite a bit more complicated AND is generally more expensive: between 20% and 300% more than a hub with the same number of ports BUT it's very useful on a busy network (business especially.)
To switch frames between different ports
There are typically 5 to 24 ports on a network switch, though real high end switches can house more. Internally the ports are connected with copper wires.
switch S3, Fa0/5 switch S4, Fa0/2