Device Types / Requirements

Video Activity

Device Types / Requirements This lesson covers device types and requirements for setting up a network. When setting up a network, we need to make sure the devices meet all the necessary requirements. When setting up routers, switches, Wireless Access Points (WAPs), bridges and Network Interface Cards (NICs), it is necessary to check the following: ...

Join over 3 million cybersecurity professionals advancing their career
Sign up with
or

Already have an account? Sign In »

Time
31 hours 29 minutes
Difficulty
Beginner
CEU/CPE
30
Video Description

Device Types / Requirements This lesson covers device types and requirements for setting up a network. When setting up a network, we need to make sure the devices meet all the necessary requirements. When setting up routers, switches, Wireless Access Points (WAPs), bridges and Network Interface Cards (NICs), it is necessary to check the following:

  • Routing protocol: make sure they support correct addressing scheme
  • Traffic filtering ability: understand the different abilities of different devices
  • All in one devices vs stand alone: routers that are all inclusive (includes firewalls)
  • Managed vs unmanaged: Managed devices are switches with access panels, unmanaged offers no traffic management abilities, it is just a smart hub
  • Port speeds, duplex, VLAN:
  • Network Interface Card capabilities/cable types
  • Wireless standards/Wireless Access Point (WAP) antenna
  • Traffic monitoring
Video Transcription
00:04
next up, we have our different device types. Now. Our device types and requirements include things such as our routers, switches, wireless access points, bridge network interface cards. A symptom essentially are different networking devices that we have in our environment.
00:20
Now, when we're setting up our network, we want to make sure that our devices air meeting all of the requirements of our network
00:25
that we talked about earlier when we're listing our requirements. So what are some of the different settings? What are some of the different specifications of our devices that we may need to look for? Well, things such as routing protocol abilities? Remember certain routers if we're trying to set up a network that supports classless addressing
00:43
certain router routing protocols don't support classes addressing.
00:47
So we need to make sure that we have routers that support the correct addressing scheme that we're gonna use and that we're using the correct routers in our environment
00:56
if we're using devices that are already in place that are communicating through some means already through through a certain protocol, say we already say all of the switches are in our environment. All are already Cisco switches, and they're set up with their V lands to use V T P
01:15
and which is a protocol which allows our are different. Cisco switches to transmit villian Information Well, then, we don't want to come in behind that and install in several top of the line del switches because those del switches may not be will be compatible with communicating properly with our view with our
01:34
four R V lands on our Cisco switches.
01:37
So we need to make sure that we're checking all of our different devices and the currently in place devices before we go out and buy new ones.
01:44
And then we have traffic filtering abilities. Now
01:47
some of our different devices before can perform traffic filtering, such as inspecting and dropping packets based on their I P address or their packet type. If we have a router that we set up that we wanted to be an all in one router, which we'll talk about in a sec, then we may need to, uh,
02:02
determine if we need that device tohave traffic filtering abilities. So
02:07
we need to understand what the different traffic filtering abilities of our different devices are going to be. If we have devices that are able to set up things such as span ports and mirrored ports to allow us to set up devices such as an I. D. S connected to that mirrored port. Then we need to understand that before we're going into it and we're buying these equipments
02:28
and then we have are all in one device is verses are staying alone. Devices now are all in one. Devices are going to be things such as our routers that we get from our Internet service provider for our home. These air devices that may include routing, switching firewalls all in one single device.
02:46
And this all in one device is going to be better for a smaller environment
02:50
rather than an enterprise environment. Now, in an enterprise environment, we may have multiple routers that air just routers, and then we have multiple enterprise level switches, and then we have multiple physical hardware, firewalls and these devices we set up in the communicate to each other to transmit through our network. But
03:07
we don't have the budget, and we don't really need to set all that up
03:12
in a very small environment. So we may want to consider all these all in one device is because these all in one device is will provide us with all the extensive bility we need without shelling out all the money for individual devices, as well as shelling out the money for someone who knows howto work with all of those individual devices
03:30
that we would only have to have our person managing that one single device
03:34
and then we have managed versus unmanaged we've talked about managed first, unmanaged a little bit before. Managed devices are things such as our switches that we have an access panel and weaken go into and we can make changes on how the traffic flows through them. This is especially you is useful in an environment where we need to set up a villian.
03:53
We need to set up mirrored ports.
03:54
We'll need eight manage switch Now, on the other hand, if we have a switch or we have an environment where all we really need is four additional ports and we need a device that can switch data between those four ports, then all we would really need is an unmanaged switch. This is a simple out of the box switch
04:13
that doesn't have any other additional traffic shaping our management abilities.
04:16
We just plug it in and it acts almost like a little bit of a smart hub. It maps. I pee in maps. Mac addresses the ports and sins traffic. We're needs to go, but that's all it really does. So we need to determine when we're setting up our switches. In our environment. Do we need a manage switch or just do we do? We just need an unmanaged switch
04:36
and then we have our port speeds, duplex and V land. Now, if we're purchasing a switch or purchasing a router, we need to make sure that the port speeds and the duplex ing ability that it supports match what we want in our network. If all of the other devices in our network support full duplex and support
04:55
100 megabyte megabyte per second
04:58
port speeds and then we bring in this device that only runs at half duplex on, Lee supports 10 megabit per second port speeds, then we're going to notice a serious drop in our network abilities. Not because any of our other devices changed,
05:13
but because that this device that we're going through, we've had to adjust our network traffic to go through this are addressed. Our network speeds
05:19
to go through this device, so we want to make sure that we're checking out our port speeds are duplex ing ability and also RV Leanne ability. We want to make sure that our device is able to set up villians is ableto have access ports and trunk ports and manage these different villains on if we have multiple billions on our network that we want to be able to talk
05:39
through our switch level and not have to go all the way out to our router,
05:42
we may even want to go ahead and invest in multi layer switches that can perform birth, both switching and routing on RV lands. So check out the abilities for our devices as far as their port speeds, duplex ing abilities go and their veal and abilities go,
05:59
and then we have our nick capabilities. Our network interface card capabilities and our cable types are network interface card abilities are going to refer to not just physical network interface cards that we plug the cable into, but also our wireless network interface cards that send out radio waves. If we are looking at purchasing a
06:19
802.11
06:21
in router. We need to make sure that that are different. Network interface cards in the computers on our network aren't just 802.11 b or G. You're a because we may be investing all this money into a router that can push out this amazing. This amazing speed can has all these additional functionalities.
06:40
But then our different devices on Lee support a lower protocol,
06:43
so we may either want to say Okay, well, we'll just go with a cheaper wireless access point for now and then upgraded after we've upgraded the network interface cards. Or maybe we'll go with a mid grade wireless access point and will slowly start upgrading some of the other wireless the network interface cards.
07:00
Or maybe we'll just go with the full highest level while its access point
07:03
and upgrade the inter network interface cards later. We can't just blame our wireless access point for network issues. We also have to check out our network interface card capabilities not and again, not just our wireless card standards, but also the port speeds and abilities
07:20
of the network interface cards that we plug the cable into a swell.
07:26
We want to make sure that are we have. We understand our different cable types. Now, if we go out and we buy a wee by fiber optic cable to run through our network, well, that's all fine and dandy. Fiber optic cable is great, but if we only have Ethernet ports on our computer, we're not gonna be able to transmit that data
07:46
by playing
07:46
by forcing a fiber optic cable into an Ethernet port. That's not how that works. We will have to invest in additional equipment, will have to invest in additional converters. And really, we're gonna be limited by the speed of our Ethernet cards. So unless we're planning on changing our entire infrastructure, we may just want to stick with Ethernet cables.
08:05
So we need to understand how, what our device cable what our devices are compatible with
08:09
as faras cable types go, and that we run those particular case so that we can run those particular cables are if we have certain cables in our environment so that we can install those particular devices. So we aren't disappointed later or we aren't
08:24
We don't have a resume creating event later, when we've set up an entire network. We bought all this equipment, turned everything on on Lee to realize the speed that we promised with our cables isn't applicable or isn't compatible with the speeds that run on our devices. So we need to make sure that we're also
08:43
comparing our cables and are different cable types to our devices.
08:48
Um, we have a wireless standards. We mentioned our wireless standards A, B G and in a little bit when we talked about our network. Interface card capabilities are wireless standards. We need to make sure that we're getting network interface cards. And while it's access points that are compatible, our A, B, G and in standards are different
09:05
standards, which dictate which frequency as well as,
09:09
ah, the speeds and the distances that we're gonna use our A and in standards are compatible with each other as long as our in standard has five giga Hertz frequency enabled. So we have network interface cards in our environment that are in a A only we need to make sure that our wireless access point is a only or is in
09:28
with the ability to talk to a over five Giga Hertz, Frequency
09:33
R B G and in network interface cards and routers are also are going to all be compatible with each other. So if we are setting up A, we're setting up a wireless access point and we have network interface cards that are running on a blog standard, and it's in an access point that that that'll work.
09:50
But we do need to make sure that we have our wireless access point
09:54
to be set to this compatibility mode so that it won't just talk to in wireless cards. It will also talk to B and G wireless cards as well. We need to make sure that that that
10:05
compatibility is set on a wireless access point as well.
10:09
And then we have our wireless access point antenna with our wireless access point antenna. This is important when we are selecting and we're setting up our wireless access points on our network in order to cover the range of where we need there are dated to cover. If we're connecting to wireless access points wirelessly, we may want t use a uni directional antenna
10:28
if we're setting up a wireless access point in a high central location, to cover a large space.
10:33
We would want to go with an Omni directional antenna. So we need to perform a site survey. We need to perform a route. We need to perform a test site survey where we bring in test wireless access points so that we can run software and we can get an idea of how signals propagate in throughout our physical environment.
10:50
So we can set up the wireless access points,
10:54
how many we need and where we need so that we don't go out and buy too much or too little or install things in the wrong place in our network.
11:03
And then lastly, we have traffic monitoring. Depending on what type of network we have, we may need to perform some sort of traffic monitoring abilities. We may need to set up an I. D. S and intrusion detection system. We may perform. We may have a firewall set up or we may want to perform packet packet sniffing.
11:18
Well, these will be possible, but we need to make sure we have devices that can perform them.
11:24
If we want our router to be able to drop packets and prevent certain users from going to certain websites and block certain content that we'll need to make sure that we install the right type of router that is able to do that. If we want to be able Thio view user user data traffic
11:41
or we want to be able to run wire shark on a mirrored port or want to be able to install an I. D. S
11:48
an intrusion detection system on a mirrored port. They want to make sure that we get a device that is capable of performing this traffic monitoring, and it's capable of setting up these mirrored ports when it comes to traffic monitoring. We also want may want to check out what type of reporting are different devices. D'oh
12:05
are different. Devices may have different statistics that they keep count off,
12:09
such as how many connections they've they've dropped, how many packets have been fragmented, how many packets thief, sent and received and this different data. This different statistical information may give us a good, better idea of what's going on in our network how our traffic is flowing. So we want to keep track of that and we'll want to use and will want to determine what type of
12:28
device we get for our network
12:31
based on what type of traffic monitoring we need
Up Next
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