 Every Cisco router/network switch has a console port on its back. It is there to provide a way to hookup a terminal to the router in order to work on it. The console port (sometimes called the management port) is used by administrators to log into a router directly — that is, without a network connection. The console must be used to install routers onto networks because, of course, at that point there is no network connection to work through. Connecting the Console Port to a PC
Console (rollover) Cable and Adapters The console cable can be:
Making the physical connection Follow these steps to connect the Router/Switch to a terminal or PC running terminal emulation software: Step 1 Locate the console port on the back of the Router/Switch. Step 2 Connect the console (or rollover) cable to the console port on the Router/Switch. Step 3 Use the correct adapter to connect the other end of the cable to your terminal or PC. Step 4 If your terminal or PC has a console port that does not fit one of the adapters, you must provide the correct adapter for that port. Connecting using HyperTerminal Click on the HyperTerminal icon below to launch a pre-configured HyperTerminal connection. This connection is configured for use with all Cisco Router/Switches. (The Router/Switch should be connected to your laptop at this time. Depending on your browser settings, you may initially see a message asking whether you want to open the file or save it to disk. To launch the connection now, select the “open” option. To save the connection to your local hard-drive for future use, select the “save” option. If you selected the “open” option, you should now be communicating with the Router/Switch. If you are experiencing problems, make sure the Router/Switch is powered on; you are attached to the proper Com Port and verify your cabling. Setting up a HyperTerminal connection file Using this procedure you will create a named connection that you can save and reuse. (This creates a connection identical to the one provided above, and is included primarily for your reference.) To set up a HyperTerminal connection on your laptop: Step 1 Click the Start button on the Windows Taskbar, and select Programs > Accessories > Communications > HyperTerminal. HyperTerminal launches and displays the Connection Description dialog box. Alternatively, if you previously saved a connection for Cisco equipment, you can launch it by selecting Programs > Accessories > Communications > HyperTerminal > connection_name. Step 2 Type in a name and optionally select an Icon to represent your HyperTerminal session. Click OK. The Phone Number window appears. Step 3 Locate the Connect Using field near the bottom of the Phone Number window. Select “Direct to COM1” from the drop-down list to indicate that this connection is a local session (and not a dial-up session). Click OK. The COM1 Properties window appears. Step 4 On the Port Settings tab, enter the following settings:
Step 5 Click OK to make the connection. The COM1 Properties window disappears. You should now see a blinking cursor in the HyperTerminal terminal window. If there are any problems at this point, then see below the Troubleshooting console port problems to isolate and fix the problem. Troubleshooting console port problems SYMPTOM: No connection.
SYMPTOM: No response from Router/Switch once connected to Router/Switch via console.
SYMPTOM: Only getting garbage from the Router/Switch. Ensure HyperTerminal is setup using the correct speed — 9600 Baud. References: Cabling Guide for Console and AUX Ports Guide: Using the Cisco Console in Linux
An Ethernet crossover cable is a network cable used to connect two Ethernet network devices directly, such as two computers without a switch or router in between. They are used to send and receive data by enabling complex data transfers between computers, routers, and networks. Ethernet crossover cables are similar to straight-through cable except that they have pairs of wires that crisscross. Their internal wiring reverses the incoming and outgoing signals. It uses a design that allows the data output pins on one end of the cable to be connected directly to the data input pins on the other end of the cable. Ethernet Crossover Cables vs. Straight-through CablesThese two types of ethernet cable are commonly used in most computer networking transmissions. A straight-through cable is used in local area networks to connect different devices like a computer to a network hub such as a router, router and switch, PC and switch, and so on. It is an alternative to wireless connections where one or more computers access a router through a wireless signal. A crossover cable is only required when interconnecting two devices with the same functionality. Another significant difference between crossover cables and standard patch cables is that each type will have different wire arrangement in the cable for serving different purposes. If you hold up both ends of the cable and compare the pin-outs, you will note that the straight-through cable has matching wired pins while a crossover cable has pins that are typically reversed. There are two standards for wiring Ethernet cables, as recognized by ANSI, TIA, and EIA. One is the T568A wiring standard, and the other is T568B. The difference between the two is the position of the orange and green wire pairs. Straight-through cables have a one wiring standard where both ends use the T568A wiring standard, or both ends use the T568B wiring standard. Unlike straight-through cables, crossover cables use two different wiring standards. One end uses the T568A wiring standard while the other end uses the T568B wiring standard. Usually, the crossover cable has the words Crossover or Xover printed on it to distinguish it from straight-through ones. Functionality Difference between Straight Cable and Cross CableCrossover cables are used when:
While in the past a crossover cable was required to connect two host devices directly, it is no longer necessary. Many modern network devices support Auto MDI-X, which automatically detects the proper connection type no matter which cable you use. For example, a computer with Auto MDI-X can use either a straight-through or crossover cable for any application. Are you looking for a wiring guide? |
What type of cable is used to provide connectivity between a computer and the console port on a switch?
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