What UTP Ethernet network cable would you use to connect a PC to a router using console?
Rollover cable is a kind of null modem cable that is the most commonly used to connect a PC to the console port as shown in figure1. It likes other type of cables that their names are come from how they are wired. So, it is called rollover cable because it has one end that is rolled in a way reversed from other. Lastly, the purpose of this kind of cable is to allow making a connection between a computer terminal and other device such as router or switch in order to configure them as needed .
Figure1: Connection a PC to the router .
As shown in figure2, a UTP rollover cable has two different terminals which are :
• RJ-45 connector that is connected to the router.
• DB-9 or DB-25 pin mal connector (serial port) that is connected to the PC.
Figure2: UTP rollover cable .
Finally, in a UTP rollover cable, the colored cable of each end of the cable is in the reverse sequence colored from the other end as shown in figure 3 .
Figure3: The UTP rollover collared in each of the end of cable.
What is HyperTerminal and how do you configure it to establish a console connection with a router?
HyperTerminal is a communication tool that is based on Microsoft Windows Operation System. Moreover, it is used to connect a computer to the other remote devices such as router, switch, other computer and Telnet site, through either a modem, Ethernet connection , or a null modem cable. Furthermore, a null modem is used to connect two terminals such as computers, router, switch and so on, directly using a serial cable such as rollover cable . HyperTerminal communication could be used for two reasons: to configure a new router or under a very strict environment for security reason. The following steps show how to configure the HyperTerminal :
Identify the serial console on the computer which is either DB-9 or DB-25 port, then connect a Rollover cable to the computer, the other end should be connected to the Console connector on the router as shown in the figure4 below.
Figure4: The connection between the computer and the router.
Start the HyperTerminal tool that is included with Microsoft Windows Operating System which usually founds on the following path:
Start > Programs > Accessories > Communications > Hyper Terminal
Then, the user should provide a name for the connection as shown in figure5.
Figure5: Naming the HyperTerminal connection.
In this step, the PC connecting interface should be specified as connected physically to the computer`s port which might be either COM1, COM2 or COM3.
Figure6: Specifying the connecting interface.
In this step, we have to specify the port setting regarding to the following parameters:
Bits per second: 9600
Data bits: 8
Stop bits: 1