Time
31 hours 29 minutes
Difficulty
Beginner
CEU/CPE
30

Video Description

Environment and Equipment Limitations This lesson covers environmental and equipment limitations. The environment is about the physical location we are in and this can impact a network. Site factors that can influence a network include:

  • Physical layout of site
  • Distance between computers
  • Keeping equipment in environmentally controlled areas
  • Sources of EMI
  • Wireless site survey
  • Power surge protectors

It is also important to be aware of equipment limitation such as: - Maximum wireless range

  • Port speeds
  • Work station capabilities
  • Support purchasing for equipment
  • Set expectation relative to budget considerations

Video Transcription

00:04
So what are some of the other factors that we need to consider when we're planning and implementing our network? Well, one of the major factor areas are going to be our environmental limitations. Now, when we're thinking about our environmental limitations and when we mention our environment, our environment is going to be the physical location that were in not just
00:22
the how what the weather's like and what kind of animals are running around.
00:26
Um,
00:27
when we're talking about our environment, we're talking about things such as the physical layout of our site. How is our site physically laid out? Do we have a network that just needs to span one small home office or is an entire building? Are we connecting to users that are on multiple different floors, or maybe even multiple different buildings?
00:45
So we need to understand the physical layout of our site when we're talking about our environmental limitations
00:50
and how we're going to set up our network. We also need to know things such as our distance between our computers are distances between our computers or distances between our rooms and our network closets, and our server stations are going to be the determining factors when it comes to what type of cabling running we're going to use
01:07
if we're gonna use any repeaters where we're gonna set up our switches and where we're going to set up
01:11
some of our routers. So we need to understand our physical not only our physical layout, but also where our equipment is going to be in that physical layout. In that respect,
01:23
then we have keeping our equipment and environmentally controlled areas. Now, if we are in a an office space, then there may be certain places where we want to keep our equipment so that it stays in better condition. We wanna have humidity and temperature control. We want to be able to
01:41
control the electrical flow to that area and control
01:44
what type of electromagnetic interference. Maybe in that environment, we don't want to take a We don't wanna have a works, a workshop that we're setting up a wireless network for maybe like a mechanic shop. And then we just have our servers and have our switches
02:00
out there jammed in a corner of the mechanic shop next to all of our other equipment.
02:06
It's gonna be dusty and dirty in there, there's going. It may get very hot sometimes, and we're not really controlling those environmental factors and we might be damaging our equipment.
02:16
So we need to make sure that we have areas that we can have environmentally controlled. We keep cabling and we keep other devices away from possible sources of interference or electromagnetic interference, and that we make sure that we keep an eye on those equipments. If there are certain equipment types that need to be in areas
02:36
such as a workshop
02:38
where it might be dusty, there might be a switch that we have that's in a workshop or wireless access point that's mounted on the ceiling in a manufacturing site where there's a lot of dust and dirt that can get in the air. We want to make sure that we perform regular maintenance cycles on that device and blow out any dirt or dust,
02:54
help extend the life of our different devices and extend the life of our network.
03:00
And then we have sources of electromagnetic interference. We touched on that a little bit when we talked about keeping our equipment and environmentally controlled areas, but with keeping away from sources of electromagnetic interference. This can include everything from microwaves, Cordless phones, radios, different light fixtures.
03:20
We want to make sure that we keep our cabling so that its run,
03:23
if possible, parallel to our lights rather than going across our lights. We keep our different devices so that they aren't They aren't being interfered with by our Cordless phones. We aren't taking our router in placing it right next to our charging station for our Cordless phone because that could cause some interference.
03:40
So we need to take all of these different sources of electromagnetic interference into account
03:45
and tryto try to mitigate them by keeping our device, keeping our major devices away from them. Keeping our cabling away from them are keeping our cable insulated to help perfect protect against this electromagnetic interference.
03:58
And then we have our wireless site survey. Now, our wireless site survey is when we're going to go to our site, we're going to set up a temporary access points and we're going to use those temporary access points to gauge what kind of range what kind of signal strength they're goingto have on our site.
04:15
Things such as other devices which may cause interference,
04:19
different cabin metal cabinets, different walls can all change how that signal spreads throughout our network. So we perform our site survey survey. So we get a better idea of how wireless signal is moving through our network and we can set up our access points accordingly.
04:35
And then lastly, we have our power surge protectors, and our ups is now. Some of our environmental factors include the type of power that we're getting in our environment. If we're on a power grid that is very susceptible to fluctuations. If there maybe is
04:51
the circuitry in our building isn't so great and we constantly have
04:56
power fluctuations and power surges, then we want to protect all of our equipment with these different power surge protectors. We don't want to run into the situation where we're constantly plays replacing a device. We're constantly replacing a particular switch or router or maybe even a server.
05:12
Because of these, these power fluctuations are causing issues inside our device. So we protect them
05:17
using very high rated power surge surge protectors, surge protectors that have ratings up to up to a high level of electricity surge. And then we have ups is UPS is saying a U P s stands for uninterruptible power supply,
05:33
and this is essentially a battery backup for our different devices.
05:38
Now we most of our devices, like our switches and routers and our server or workstation computers don't have batteries built into them that are meant to keep the device running. If power goes out, these UPS is do their external batteries that we plug into the wall. They charge the batteries inside of the ups,
05:57
and then we plug in our device to the UPS.
05:59
Now UPS is conduce Maur than just keep our device running for a couple extra minutes. UPS is depending on their size, and the load that we're putting on them sort of dictates how long our device can run. If power shuts out, shuts off depending on the size of our ups, possibly anywhere from a few minutes to a couple hours.
06:18
It just depends on if we're using a small standard
06:21
death side ups or for using a large closet. UPS and
06:28
the are UPS is can also perform functions such as gracefully shutting down. Different computers are gracefully shutting down different servers. So if we have a ups that that our servers plugged into. And then we have that UPS also connected to our network. We can install special software on our server.
06:46
That's that tells the U. P S. Hey,
06:48
when your battery level gets to 5% or less or gets to 10% or less, I want you to start gracefully shutting me down. I want you to send me a shutdown command. That way I can properly close connections.
07:01
I can properly close programs, and I can prevent data loss. But I'll still be able to shut down before you run out of power and before the power cuts out. And then we have our equipment limitations. Now our equipment limitations. We need to understand that our devices can't do anything. Can't do everything, especially if we're on a budget. If we
07:20
but go to best buy and buy a $15 unmanaged switch,
07:25
then
07:26
we can't expect to be setting up the lands on that switch, especially since it's unmanaged. If we go out and we buy a cheap, cheaper router, then we can't expect that router to be performing doing advanced rounding protocols or
07:43
performing a very high level of firewall configurations or
07:47
filtering or different types of the lands or sub net addresses. So we need to understand that our costs can we need toe align our equipment expectations. We need to keep that in line with our budget constraints. And if we absolutely need higher level equipment we need, we may need to re evaluate our budget constraints
08:07
or, if we have a certain budget and our equipment
08:11
that we're listing out is getting to that level or getting higher than we may need to re evaluate how we're setting up our network and what we want our network toe look like. So they both go hand in hand with each other, our equipment expectations and our budget on our budget constraints. So different types of equipment limitations We may run into
08:30
our maximum wireless ranges and different types of wireless standards.
08:33
We may want a wireless access point that has
08:39
has three in tennis for sending three in tennis for receiving runs on attitude out 11 in is able to perform all these different functions, but we don't have the funds to go out and purchase a 305 100 to $1000 while it wireless access point
08:56
we've only budgeted about 100 100 and $50 for a wireless access point.
09:00
So we need to understand that with ah, lower budget may come lower abilities.
09:05
We also have things such as port, port speeds, duplex ing ability and number of ports. On our device, we have our workstation capabilities, such as how much Ram is in our work stations are CPU power in our workstation, as well as the network interface cards that we have in our workstation,
09:24
the network interface cards, speeds and half duplex ing versus full duplex ing.
09:31
And then we have support purchasing for a different equipment. Ah, lot of our equipment now will offer to come with certain length support. And if I say if that device just stops working, we can call up specialized technical support and they'll try to fix it for us
09:46
or we send them to the device and they try to fix it, and they send us a send us a refurbished one
09:50
if they can't. So we need to understand that one of the a very, very big aspect of our equipment costs Maybe that support that were purchasing. Now you may say, Well, we have an I T staff. We have people that can fix this device or people that can troubleshoot this device Well,
10:09
that may be true to a certain extent when it comes to the firmware that's installed on that device. When it comes to actual software configurations or errors in the device, your I t. Your I T team may run into a wall, and rather than having to go out and purchase a new device or sin this device off for cost
10:30
and have it worked on,
10:31
we may want to purchase this additional support so that it will be there if we need it. Different levels of support, in different lengths of support come with different costs. There may be a certain support that all it does is for the next five years, provides us with firmware updates
10:46
or maybe another level of support that provides us with the firmware updates for five years
10:52
and then, for the next three years we have on the phone support in them for the next two years. So for two years we also have a support where if phone support can't fix it, then we can send it back and they'll send us a refurbished device. So we need to check those different support plans if their devices in our network
11:09
that we desperately need toe work and we need to make sure that we can quickly resolve and quickly fix them,
11:13
then we may consider getting a higher level support plan for that device so that if we run into issues, we aren't down for a long time.

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CompTIA Network+

This CompTIA Network+ certification training provides you with the knowledge to begin a career in network administration. This online course teaches the skills needed to create, configure, manage, and troubleshoot wireless and wired networks.

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
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