Rolled Cable
Written on 04:05 by Ahmet Emir
Although formed cable isn’t acclimated to affix any Ethernet access together, you can use a
rolled Ethernet cable to affix a host to a router animate consecutive advice (com) port.
If you accept a Cisco router or switch, you would use this cable to affix your PC running
HyperTerminal to the Cisco hardware. Eight affairs are acclimated in this cable to affix serial
devices, although not all eight are acclimated to accelerate information, aloof as in Ethernet networking.
Figure 1.24 shows the eight affairs acclimated in a formed cable.
FIGURE 1 . 2 4 Formed Ethernet cable
Host
1
2
3
4
7
5
6
8
Router/Switch
1
2
3
4
7
5
6
8
These are apparently the easiest cables to accomplish because you aloof cut the end off on one side
of a straight-through cable, about-face it over, and put it aback on (with a new connector, of course).
Once you accept the actual cable affiliated from your PC to the Cisco router or switch, you
can alpha HyperTerminal to actualize a animate affiliation and configure the device. Set the configuration
as follows:
1. Accessible HyperTerminal and access a name for the connection. It is extraneous what you name
it, but I consistently aloof use Cisco. Then bang OK.
2. Choose the communications port—either COM1 or COM2, whichever is accessible on your PC.
3. Now set the anchorage settings. The absence ethics (2400bps and no breeze ascendancy hardware)
will not work; you charge set the anchorage settings as apparent in Figure 1.25.
Notice that the bit amount is now set to 9600 and the breeze ascendancy is set to None. At this point,
you can bang OK and columnist the Access key and you should be affiliated to your Cisco device
console port.
We’ve taken a attending at the assorted RJ45 defenseless askance brace (UTP) cables. Keeping this
in mind, what cable is acclimated amid the switches in Figure 1.26?
In adjustment for host A to ping host B, you charge a crossover cable to affix the two switches
together. But what types of cables are acclimated in the arrangement apparent in Figure 1.27?
In Figure 1.27, there are a array of cables in use. For the affiliation amid the switches,
we’d acutely use a crossover cable like we saw in Figure 1.23. The agitation is, we accept a console
connection that uses a formed cable. Plus, the affiliation from the router to the about-face is
a straight-through cable, as is accurate for the hosts to the switches. Keep in apperception that if we had
a consecutive affiliation (which we don’t), it would be a V.35 that we’d use to affix us to a WAN.
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