crossover cable
we use straight cable to connect between the router and switch as router and switch are different devices.
There are at least two ways. First, you connect the wireless router directly to the cable modem, and then the switch in the wireless router. You have to connect the cable coming from the modem in the wireless router internet port. Second, you connect the wireless router to the switch, again the cable coming from the switch you have to connect on the wireless router internet port. It's better to put the wireless router just after the modem, but it's not required.
A rollover cable is used in a networking environment where a router/switch is to be configured from a computer. One end is wired one way but on the other it is reversed. You would typically use one end into a serial port on a PC and the other into the console port of the switch/router. It is common within cisco configurations. Hope I helped
packaging tape
packaging tape
If you connect to the router via the console port then you are physically making a connection with a physical cable to the router. This implies you have to be close to the router itself. Using telnet allows you to connect to the router from anywhere in the network, and doesn't require a physical cable connection.
A straight cable is used to connect a PC to a hub, switch, or router.
To connect two devices of the same type together. e.g. You would use a crossover cable to connect a router to another router, a switch to another switch or a computer to another computer. If you are connecting diferent devices together, such as a router to a switch, a straight through cable should be used.
Rollover
A straight-through ethernet cable.
To connect to a cisco 1800 series router, you need either a network connection that goes to the router, and then you would configure the router to allow telnet or you would need a console cable, also called a rollover or cisco cable and physical access to the device.
Rollover cable (also known as Cisco console cableor a Yost cable) is a type of null-modem cable that is often used to connect a computer terminal to a router's console port