Tag Archives: patch panel

Snagless RJ45 connectors – How To Make Network Cables Snagless

Patch Panel

Snagless RJ45 Connectors – the Odd Request

Snagless RJ45 connectors are that odd request that my department makes from time to time. Why do you need RJ45 connectors anyway, it’s the invariable answer from supervisors, and the typical reminder: “You have all sorts of patchcords, all dimensions…” Well, first of all, we sysadmins never have all the patchcords dimensions available. The IT racks should be something that should be kept as tidy as possible, and one way is to have custom length of the patchcords.

Depending on your infrastructure, you might want or might not want to use handmade patchcords in your racks; however, in many cases this is totally acceptable. You can probably make a Cat 5 patchcord, but you won’t be able to make a Cat 6 one. In other words your hand made patchcords will be able to run at Gigabit speeds, but not at 10 Gigabit speeds, even with the proper connectors and cables. Having said that, most of the equipment in a business server room is connected into a Gigabit switch or at lower speeds, so this would not be a problem.

Custom Patchcords – Always Broken Lokcing Tabs

The major problem with all the handmade Ethernet patchcords and cables is that the locking tab is breaking. I probably don’t have to explain why broken tabs are bad; they will not be secured into the equipment’s jack, resulting in intermittent data loss, or even disconnection.

There are two reasons for the locking tabs breaking so often. Firstly, the little locking tab is very fragile, and we can’t change that, it is fragile to keep the costs down. The other reason is the design, the locking tab sticks out, and it is very easy to get snagged and broken off. All store-bought cables come with a snagless boot; it’s the standard these days. All the cables with broken locking tabs don’t have the boots, because they are terminated in place, by either a datacom tech, or an admin.

These plugs from Panduit are the best snagless RJ45 connectors.

The connectors are meant for patch cords, and they are rated as providing Category 5e performance.

The patented tangle-free plug latch prevents snags, hence breaking.

They are easy release, unlike some snagless boots, and they save time on frequent moves, adds, and changes.

The design facilitates easy insertion and termination of wires

What Is the Solution for Broken RJ45 Connectors

One of the solutions to fix the snagging network cables is to install a "snagless" boot over the cable, before crimping the connector. After crimping, just push the boot over the connector and the boot will protect the little tab.

My preferred way to fix this is to use snagless RJ45 connectors, and a boot. This ensures the plug will not break ever, unless you purposely do it. You can also use just the snagless connectors, they are very good, and I do it very often, but if I have both the snagless connectors and the snagless boots, I will use both for optimization. The snagless plugs are slightly more expensive than the regular ones, but when you draw the line, and consider the troubleshooting needed on the long term, and the fact that sooner or later those RJ45 connectors will break and will need to be replaced, the additional cost is worth paying.

Like I already mentioned before, with the low prices for commercial made patchcords, and the quality ensured by a machine made ethernet cable, there is no need to make your own, it's just not practical.

This cables are made in a commercial facility, they are tested, and they come in a variety of lengths, just choose the one that is right for you. You can even get  to choose the color, so you can color code your patch panel connections, so everything looks tidy, and easy to follow.

How to Build a Computer Network

If you own or manage two or more computers you need to connect your computers in a wired network to share Internet Connection and other services.
Here is a complete How To Build a Network.

Whether you are doing it at home or at your workplace, creating a computer network is not very difficult if you are a handy person and you have basic knowledge of computer networks. We will cover here most of the concepts you need to make your own LAN.
Computer Network
The series of articles will show you how to create a physical network and how to configure it to provide various services to your network users. We will focus on TCP/IP networks as this is the most common networking protocol.

Why Do You Need a Network?

You need a network if you need to share services for two or more computers.
Services that can be shared include: File sharing, sharing a network printer, Internet sharing, email services, Intranet, media broadcasting, etc…
In a home network, it is very common to share a printer and the Internet Connection.
In Business environment, the network becomes more complex and many more services will be needed to accommodate the use of many computers in a single network. Such services are DHCP – for automatic IP configuration, DNS – for name to IP resolution, corporate email, Proxy Server – for increased security on Internet, Intranet server – this is a private web server, VOIP phone system, etc…

What are the Limitations of My Network

You Ethernet cables are limited to 100m between any two active devices. If you need more than 100m between any two active devices such as computer and switch or computer to computer, you need to add a repeater or a hub, a switch will work as well, at each additional 100 meters, (or 333 ft.).
Depending on your materials and equipment, your network can run at 10Mb/s, 100Mb/s or 1Gigabit/s.
The most usual is to use Cat 5 or Cat 5e cables and connectors. A Cat 5 network can provide a speed up to 1000Mb/s.
If you need to connect at longer distances the more suitable solution are
Coaxial cable – up to 500M, speed 10Mb. You need special repeaters or hubs or special network cards.
The fiber optic – 10Km or more, speed up to 100Gb, depending on the equipment. It is the most expensive solution; the price though can be affordable for slower connections. For slower connections, most of the cost will consist on running the cable between the two points.
DSL is the cheap way to connect two remote offices if you have an available copper pair between the two offices.

What Do I Need to Make My own Network?

To make your own Ethernet Network you need the following equipment:
UTP/STP networking cable, RJ-45 connectors, Crimping tool, Punch down tool, Keystone Jacks, Wire stripper / Knife, Network Tester, Patch Panel, Network Switching device. The list includes also a stud finder, drywall saw, measuring tape, mounting plate, fish tape, ladder, and the usual tools such as screwdriver, drilling machine, hammer, etc…
Ample descriptions on the tools and materials are provided by following the links.

Computer Network Planning

The typical Ethernet Network has a star topology. That means that you have a central device, (network switch), that connects all of your network participants. This is important for your planning since you will have to run all of your cables to a central point. Make your measurements and place your central point in such manner that all of your cables are 100m or less. This includes the patch-cord as well.
If you have computers farther than 100m you will need to install a repeater. Alternatively you can use other types of connection, (coax, fiber optic, etc…), see the limitation paragraph.
When you run a cable consider the maximum amount of devices that can be stuffed into that office. It is a lot cheaper to run an extra cable or two per each office location than to run a single cable after the initial installation.
Install the keystones as close as possible to the actual location of the computer. Plan this thoroughly and pick the best location so that the patch-cord is out of the way.
Buy extra cable and extra connectors.
Use common paths for your cables whenever possible. If you run ten cables at once saves a lot of work and time.
Plan your cable route. Use ceiling whenever possible, it is the easiest path. Avoid running the cables near big electromagnetic sources.

Buying Computer Network Tools and Supplies

Do not buy cheap tools and materials. If you do, you will be penalized in different ways:
At the installation time you will get all sorts of problems trying to connect poor materials, cheap cable will be damaged more easily when manipulated, connectors will break easier.
In time the quality of the network will decrease if poor supplies and tools are used.
Overall experience and quality will be very poor if you get too cheap. If buying expensive tools is not justified, (a one time job), try to borrow good tools and don’t buy cheap ones.
Follow the links to learn what to look for when you are buying specific materials.
Now that you planned and bought all the Networking tools and supplies you can proceed to the Running the Cables for a Computer Network.

Computer Network – Tools and Supplies

Punch down tool

Punch down tool – The punch tool is used to insert the network cable in the patch panel or similar connection panels. For a small network up to 7 devices you might not need it as you can easily connect all of your devices directly into the switch.

Keystone module RJ45

Keystone Jacks – The RJ45 keystone jack is the female connector, usually immobile, part of a network connection that is mounted on the wall or similar. It provides a network connection close to the device to be connected. A patch-cord is used to connect the device to the keystone jack.

There are many types of RJ45 keystones, some require a punch down tool to be used, and some are tool-les, providing a lever for insertion and a retaining clip to secure the connection. The keystone is also produced for various categories, (Cat 3 – Cat 7), make sure you buy the correct one.


Deep Surplus
Wire Stripper Twisted Pair Cable

Wire stripper / Knife – I am not a fan of the wire stripper because it always cuts a little of the wires. Most of the times, the cut is superficial and it doesn’t get to the wire. But sometimes the stripper will scratch the wires. Using a utility knife or cutting pliers, is a little more laborious but I prefer it as I get more control. Moreover the many crimper tools come with a cable stripper. Don’t use that one, it doesn’t work for round cables, it only works for flat cables.

Simple Cable Tester

Network Tester – This is not a must, but if you are doing this for the first time, it will save you a lot of troubleshooting. For professional network cabling an expensive Network Tool that can measure attenuation, cable length, category supported, etc…, it’s a must. You need to give your client a report with your measurement results.
For small DIY jobs a simple tester will do it.


Patch Panel

Patch Panel – This is beyond the purpose of this article since it applies to bigger networks.

Network Switch

Network Switching device – The switching device switches packets between the different devices on your network. Modern switching devices can make a virtual map of all of the devices in your network and route packets according to this map.

Older connectivity devices, such as network hubs, used to indiscriminately broadcast the packets on all of the ports and only the device which the packet belonged to would have accepted it. This design creates a lot of collisions and saturates the network with unnecessary traffic.

Network hubs, (two or more ports), or repeaters, (only one port), are used to increase the maximum of 100m, (333 ft), between two devices connected on an Ethernet segment. Every repeater adds up another 100m.