Time
13 hours 57 minutes
Difficulty
Beginner
CEU/CPE
14

Video Transcription

00:00
Hello. Welcome back to I C d. One Interconnecting Cisco Networking devices apart one This episode 533 D A c. P. Sarona Cisco Router
00:09
I'm friend Aaron. I'll be your instructor for this course. Last video went over the DCP concepts, the different messages that were sent and then we configured Router one is a really agent over to router three. So that way, the
00:22
when we set a broader three as a d a c P server, the messages from Router One's land will goto, uh, server as right or three.
00:31
So, again, in this episode, we're actually gonna be setting up a router three as the D. A. C P server.
00:36
And I said we're gonna set a broader three of the server
00:40
and quick pre system here. What is the source? I p for a discover D H E P packet.
00:45
We'll give you a few seconds.
00:49
All right. It is 0000
00:53
and we still have the same lab diagram with the switch. Three is the layer three device routing between Bill and 30 and 50. Everything's the same. We're going to pull the address off the Kelly VM at the top there. And I have gone ahead and set that for D A C P. Sir. D h e p
01:11
So that way is gonna ask for that address is gonna send out that broadcast message looking for an i p. Looking for D h P server.
01:19
Um,
01:22
and I currently have the internet interface down on the Kelly via
01:26
so IOS d should be server configuration. Like I said, we have the i P helper address set up on Roger one already. Router three is gonna be our server. What we need to do first is we need to create a D A cheap DCP pool
01:41
for each sub nets that is going to need addresses. So that has d should be client. We would have to create a pool for each summit.
01:48
For now, we're just gonna create the one sub net the tender. I want that 10 slash 24. We're gonna create that pool for now. And then we're going to set up the router one interface as a excluded address from that pool. So we'll go ahead and just put in a small range of excluded addresses.
02:06
So that way we know
02:07
what addresses are being pulled for D C. P.
02:13
And here we get into the IOS d d h e p server configuration. Here are the commands we're gonna be running first off the I P D. H p excluded addresses. Then you have the first address that you would like to be excluded and in the last address that you would like to be excluded.
02:28
So what that means is we will have the
02:30
router up. Here's the 1st 1 and then we'll go up to 10.49 is our last address. I'll show you what that means in a minute, and then we're actually going to build the D A. C P pool with the i p d a. She be pool, and then we'll give it a name for router. One land would say,
02:46
um and then in the DCP configuration mode, we're gonna get the network. This is gonna actually be the pool. The network command gives us the pool of I PS to pull from. So that's something that I d is gonna be 10.1 dot 10
03:00
and you can introduce slash 24 or you can do to video 5 to 35 to 55 0
03:07
You can give either one in this command and then for the default router. We're going to give it that Gateway address that we would set. So that will be the router. One land interface that we're gonna give it for the default interface Rotor
03:20
the D n. A server. Um, recording. Don't have one. Cecil was gonna give it to Google, D N s I P. And then leases leased space days space hours based in minutes.
03:30
And finally, we'll get a donut domain name for it to receive
03:35
in a couple different commands were going to use for the troubleshooting and verification
03:39
is the show I p D H e p binding and the show I p D h e p pool in the name and we'll actually go over. Here's in a minute. So I got the party session up
03:52
and I had G h e p debugging on currently,
03:55
so I'm gonna get right into it. Configured terminal I p
04:00
de HCP excluded addresses and we want to avoid 10. That one. That one and 10. That one. That one. That's 49
04:12
and let's do
04:15
that's 76
04:18
through 2 55 So that way we have 25 eyepiece that we're gonna sign it
04:25
and was by that I mean, we have 50 through 75 that we're gonna sign out. So we're going into a p D h e p. Poole and we call this router one land.
04:38
Now we're into D A sheep configuration mode. We'll do the network. The son that I do remember is 10 and 1110
04:45
And what is it asking for the cider we can do? The note there, the
04:49
sanitation or the tube is five. I like cider because it's easier
04:55
and we'll give it a default. Roeder tend one, that one. That one. This is the router one land interface,
05:03
and we'll see if it's asking for anything else. No, we don't need to give it anything else.
05:10
And D n s is gonna just be the Google Venus.
05:14
Oh, are we can do the open VPN.
05:19
I don't know what's going on. We can give it alternate. Dina service here is Well, we can do the
05:26
no. One closer
05:28
on. We're going to set this lease for zero days, 23 hours and we'll go 57 minutes
05:36
domain name. I realize we have a few domains names on this, so I'm gonna try and stick with this one. Cyber very labs dot com
05:45
and we'll hit end. So right now if we do a show I p d h e p binding.
05:51
We have
05:56
We got an i p. Address already.
05:59
Ah, don't ever question that
06:01
theater face on. Kelly should be down a little. Check that, um
06:09
who knows me as a virtual machine. Just the weird thing. I don't know.
06:14
Anyway,
06:15
I'm still fighting with that virtual machine thing, So if we go to D h p Poor router one land.
06:24
So we have utilization. We have the total addresses. We have one least address right now,
06:30
and this is the
06:32
index. So this would be the next I p that's assigned.
06:38
So the interesting part about this this doesn't show you which I'd peers are excluded. So if we do a show run I was gonna look for begin it th e p.
06:48
Here's where we get into the excluded address. If you go to the shore,
06:54
it doesn't actually show it in the
06:56
pool, because whoever that was in global configuration, where we said it.
07:00
So go ahead and bring up to Kelly box real quick.
07:03
You get it running if config. Okay, so do
07:08
they've configured. He's zero up.
07:13
Wait for this
07:16
on and hopefully
07:23
Okay. Yeah, And we received
07:27
the doctor he wants. So now you're sure? I p
07:31
do you actually pea vine grinding?
07:36
Now we have these two apiece. Yeah, that docked 50. Must be some kind of
07:42
must be. I don't know. It's weird. I have a u S b t Ethernet. Maybe it's
07:47
between that and the V m. So
07:49
I don't know, you run into random, it weird issues. Anyway, One of the useful command you could see. Um, I'm gonna show you hear this? Actually, it doesn't have to do with DCP. What is one that I was looking through? And I saw this. I figured it was a useful command. If
08:05
you're trying to trace a route for I p
08:09
you can, you trace routes and I'm gonna shoot it all the way down to the bottom of the boom. Two laptops to 50.
08:16
So what this does is it is going to show you the hops along the way
08:20
who respond to the icmp packets.
08:22
Um,
08:24
so it should show you each based, essentially, the i p of each router that it hits along the way to get to that, um, your boon to laptop a 10 12 50.
08:35
So it gives us a second to run.
08:41
What?
08:54
All right, Ariel. So as you can see, we have the gateway first
08:58
at 10 01 the 10 in 142 That is the interface that is facing rather one on Router three
09:07
and then send 145 is the interface
09:11
that router to has that is facing Router three. And finally we get to the final destination. So it took
09:20
maybe a minute to run. If you are on windows, the one you're gonna want to do trace our tea
09:26
for Lennox. It's trace route when knows a trace. Artie,
09:31
I can't recall if the lab machines in the exam allow you to use that or not. They should think I remember using him.
09:37
Um,
09:39
but just hand on your skill set for a normal life as well.
09:43
Otherwise, we have configured our d c P server on Router three. We have our helper address on Router one. So let's Go ahead. Minimize, buddy. Everything seems to be working.
09:54
It's a little recap we have set. Remember to set the excluded addresses first, and then issue will set the pool. Name what? You actually bring you into the D A. C P. Configuration mode. From there, you'll set the sub net i d. With the mascot Mary canoe cider or the full dot a decimal notation.
10:13
Um, to set the d n. A server, the default gateway.
10:16
You can set the domain name.
10:20
I mean the whole range of things in your lease
10:24
and is always moving to the post assessment here. What? How long is this least gonna be good for if a
10:31
device asked for an I P address from router one. How long is the least good for? Give you a few seconds.
10:39
All right, Hopefully you got one day, 20 hours and 54 minutes. If your DCP server gives you an I p for one minute 20 seconds of 54 milliseconds, I would find a new D h e p server or find someone else configure it for you
10:54
and the next module. We're gonna look at access control list and the network address translation.
11:01
And as always, if you guys need, don't feel free to shoot me. Message. Otherwise, thank you for washing this module, and I look for deceiving the next one.

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