Time
15 hours 34 minutes
Difficulty
Intermediate
CEU/CPE
16

Video Description

Frame Relay Lab In this lab we've diagrammed a Hub and Spoke topology and dissect for your its connection, routing paths, and explain how these configurations work. You'll learn how to change the encapsulation of each interfaces and why you should know BOTH of Frame Relay Encapsulation types, IETF as well as Cisco. We also examine the concept of LMI (logical management interface) and demonstrate what you learn from running LMI increment multiple times an why that is critical information to have in real time.

Video Transcription

00:04
All right.
00:06
Here is our frame. Really apology for our lab.
00:10
The cloud in the middle
00:12
represents the Internet service provider or your service for lighter cloud. And I have pre configured it
00:18
for C CNN purpose as you do not need to know how to configure this cloud or how the service for later
00:25
configurations work.
00:27
As you see, this is ah ha been spoke Topology.
00:30
Roger. 12 and three are connected to a router. Five. There is no direct PVC or virtual circuit between router 12 and three.
00:41
Rather five has three virtual circuits. One to roger, 1 to 2 outer two and another 12 out of three.
00:48
All three spoke routers, namely 12 and three have a PVC or a virtual circuit to route or five.
00:56
Let's go into round or five
01:00
and from config mode
01:02
go into our interface serial zero
01:04
000 Which is
01:07
this interface right here.
01:11
And all these interfaces I've selected as 000 interfaces.
01:15
So
01:18
we go into the interface
01:21
and we change out encapsulation
01:25
to frame. Really?
01:29
Then we do a no shutdown.
01:33
Well, before I move on,
01:34
if I just say encapsulation frame relay space question mark.
01:38
Take note
01:41
because it could show up on the test that there are two types off frame relay encapsulation sze
01:47
one. Is your default
01:49
frame really encapsulation? So if I say encapsulation frame, relay and hit enter
01:53
that is your default frame relay encapsulation
01:57
or
01:59
Cisco frame relay encapsulation.
02:01
And in this Cisco proprietary,
02:04
the other kind is I e T f, which is your open standard,
02:08
so I e. T f stands for International
02:12
Engineering Task Force. So if I want to say encapsulation frame, really i e t f then I would be running the i t i e t f frame relay encapsulation type.
02:24
If I leave out i e t f. I'm simply running the default Cisco frame to the encapsulation type.
02:30
We'll keep it at Cisco and then no, shut the interface
02:38
at this point in my interface is up and should be talking to the provider edge frame relay switch
02:47
and I should have started sending and receiving LM eyes.
02:53
Let's do the command or execute the command do show
02:57
frame. Really? L am I.
03:05
Now you see that number status increase sent
03:07
and received has incriminated from 0 to 7 and six.
03:13
Let's do this command again
03:15
and see if this number increments
03:17
and now it's incremental to 10 and nine.
03:22
Now this number status messages received.
03:25
Field. You need to see this inclement, so you should never do this Command wants. You should do this command a few times to see this field in government.
03:37
If this field is not incriminating, it means you're not talking
03:40
to your frame relay network
03:44
or for to your service provider network. In that case, the problem most often is at the service provider end. No amount of trouble shooting at your and unless you have a bad interface is going to help this. You need to pick up the phone and call your service for lighter.
04:00
And the first thing you should say is, I'm not receiving alum eyes because I don't see them increments every 10 seconds.
04:09
Now
04:10
with Ella Mai's, there are three types of Elham eyes, so if I execute the command
04:15
frame, really Ln my type space question mark,
04:20
you have an see Cisco and Q 933 A.
04:26
For the purposes of the CCN exam, you do not need to go into the details off the variations within these t three except for the names. Just remember these names and see Cisco and Q 933 eggs
04:40
If I just hit enter
04:43
if I do not do anything about the frame really, ever my type
04:46
in Defaults to Sisko.
04:50
Since this is a Cisco router
04:54
now, I have changed my encapsulation type to frame, really. And I am receiving Elem eyes from the provider Edge
05:02
and McCallum eyes are incriminating
05:05
and as up to 31 from 13. Since I have been talking,
05:11
let's check our P V C's.
05:15
I do
05:16
new show frame
05:20
Really PVC
05:25
now. As you see,
05:27
I am getting
05:29
three del. She's remember guys Del sees identify P V. C's.
05:33
I'm getting the del c 5015 or two and 503 and right now Altria from, say, unused
05:45
and the PVC status is inactive as reported to us through our Elem eyes.
05:51
Remember, folks Ella Mayes report the end to end circuit health.
05:58
These are enacted because we haven't really done anything on the other other side.
06:02
What if I go over to router one
06:06
real quick before I go over to Ryder one. I'm going to tell you that five or one goes to rather 15 or two goes to Router two and 503 goes to router three.
06:17
So on router 5501 goes to
06:23
are one,
06:25
five or two goes to if I could type
06:29
goes to who
06:30
are two and 543
06:34
whips
06:36
goes through
06:39
are three. I apologize, guys. I'm typing in the dark here for the projector to be on and my typing isn't all that great.
06:49
So if I want to our 15 or two to our 25432 or three.
06:55
Okay, So if I go on our to our one
06:59
And if I simply
07:00
go into my
07:05
interface
07:08
serial 000 which is connected to the frame Cloud
07:13
change, man Consolation to frame relay
07:15
and executed No shutdown commands.
07:19
And make sure I'm sending and receiving Elem eyes do show
07:25
frame. Really? L am I.
07:29
I received four alum eyes. Since I know shut the interface. Let's do it one more time to make sure this increments. And yes, it did,
07:36
which is good.
07:39
And now if I check this PVC on route or five,
07:48
you will see since the other end. I have done executed a notion command after changing the encapsulation type to frame relay, this PVC say, is active
07:59
while router to
08:01
PVC number 502 says inactive. And 503 also stays inactive. Five or three going to rubber tree.
08:11
So once again, Ella Mayes report the end to end circuit health since I brought up the circuit at the other end. Now the circuit is complete. The L. A. My skin report that this is an active circuit
08:28
now on route or five. I'm not going to do frame relay from the main interface. Remember, I said
08:35
you could have a frame relay main interface, which is, by default, a multi point interface.
08:41
Or you could have a multi point sub interface or point to point some interface.
08:46
So we're gonna do frame relay on rather five from a sub interface.
08:52
Now, the first part of our lab, I'm going to do multi point frame relay all around.
08:58
Then I will erase Maiken Figs and come back and do Another lab would point to point frame,
09:03
so
09:05
I'm gonna create my first sub interface interface. Serial zero size zero slash zero And if I say dot
09:13
one, which is my first sub interface space question mark,
09:18
it's asking me either to pick a multi 0.72 face or a point to 0.0.72 face. As I said, the first part of the lab is all going to be dedicated to multi point.
09:30
So I create a multi point sub interface and hit Enter
09:33
and my interface is up
09:35
and my my prompt changes to config summit
09:41
now as an I p address ing scheme.
09:43
In this multi point frame relay environment,
09:48
allrounders 123 and five are going to be residing in the same sub net.
09:56
So I'm just simply going to use our old friend.
10:00
The networks have been using over Ethernet
10:01
the 1 51 01 45 0 slash 29 network, and then I can assign router 1.1 router to dot to Router three. Doctor,
10:13
so
10:16
0.1 is going to be Rod Awan.
10:24
I got to
10:26
is going to be grounded, too,
10:30
and
10:31
0.3 groups 0.3
10:37
0.3
10:41
It's going to be
10:43
are three.
10:43
So let's go sign these I p addresses. I'm on less up interface and I'm going to say we're out of five is gonna be about five I p address
10:52
1 51 a 1 $45. 525525555
10:58
two,
11:01
48.
11:05
I've assigned my I p address on Router five.
11:09
Let's go sign an I p address on router one.
11:13
Rather one. Also, I'm going to create a sub interface I nt a 000 dark one.
11:20
Now it says cannot create some interface because I did not specify whether this is going to be a point to point or a multi points up interface.
11:30
What's that specify? Multi point interfaced comes up and I say I'd be addressed. One
11:35
1 51 a. 1 45.1355255255 to 48
11:45
router to again I'm going to do on the sub interface.
11:52
So
11:54
I go into my cereal
11:58
000 interface
12:00
Change my encapsulation typed your fame really do a no shuts down
12:07
do show frame.
12:09
Really? L am. I make sure I'm getting
12:13
my l allies.
12:16
And yes, I am.
12:18
It went from 3 to 4. Should have gone to five by now,
12:22
and in doing two from four,
12:26
it went to five
12:28
and assigned an I P address of 1 51 01
12:35
45.22555555 to 48.
12:43
Actually, I ended up signing it on the main interface. So let's go create the sub interface. I took the I P away by putting no in front of the I P Address Command.
12:54
And I'm going to create my sub interface as 0.1000 dot one
13:01
multi point
13:03
and assigning the I will sign the I P address
13:07
over here.
13:09
So I p address 1 51 1 45 dot 2255255255 to 48 which is this last 29 network.
13:20
And let's go to Router three
13:24
and do the same
13:26
interface. Serial 000
13:31
encapsulation strain relay.
13:33
No, shut down. Let's check to see if we're getting our Ellen eyes with Joe show
13:39
frame. You don't need to really type in the whole command. Guys. I've been typing in frame really Ln my for your benefit, But I could just say f r l m I and it will show me.
13:50
I've received four messages for Ella Mayes
13:54
till now,
13:56
and it incrementally to six.
13:58
So I am receiving lm eyes and talking to my friend. Really cloud
14:01
for Router three. Though I am not going to create a sub interface, I'm simply gonna assign
14:11
the i P address on the main interface.
14:18
So do show I p interface brief Router three has its address on the main interface.
14:24
As you see as 000
14:28
router to
14:31
has a sub interferes. You sure? I p I and debrief
14:39
and router choose I p is on interface 0.1.
14:46
Router one also has his i p
14:56
address on serial 0.1
15:01
and router five is also
15:05
also has his i p address
15:07
You should be. And debrief
15:11
has his i p address on s 0.1
15:16
or the some interface.
15:18
Now, if I try and pin between router 500 to 1.
15:20
So let's ping
15:22
do paying
15:26
1 51 01 $45.1.
15:30
It will not work.
15:33
Why not? Let's sit debug do debug. I'd be
15:39
packet
15:39
and then let's try and ping again.
15:43
I'm getting a message
15:46
that it has been routed.
15:48
Why are the routing table or the route information base routed via rib?
15:54
But the encapsulation failed.
15:58
Now what does that mean?
16:00
Well,
16:02
this means that I was not able to encapsulate my layer three packet inside off a layer to frame.
16:15
So round her five
16:18
looks up its routing table
16:19
and let's look at rather five surrounding table Do show. I pull you out
16:25
and finds the network 1 51 a 1 $45.0 is directly connected.
16:32
Now we're trying to paint 1 51 1 45.1
16:36
which means Router five now
16:38
needs to build a letter to frame to send the frame over with the packet encapsulated inside to Router one with the I C and B packet encapsulated inside.
16:49
So once again, Router five. Once retyping ping 1 51 1 45.1 Beings builds in ICMP packet with a source address of 1 51 1 $45.5 its own address
17:03
and a destination address of 1 51 1 45.1 which is rather one
17:07
now, since this
17:11
network is directly connected row. Row five needs to build a frame relay frame for transmission on the local data link.
17:21
For that router, five needs to know
17:25
the DLC to get to
17:29
router one.
17:30
However, we have all three. Del sees
17:34
you show framed
17:37
Really PVC. We have del C 515 or two and five old tree. But Router five does not yet know which one of these to get to router one. Which one of these to use to get to route or two and which one of these that you're used to get? Two. Rather three.
17:53
For that, we must manually
17:57
bind the DLC to the remote i p.
18:02
Now, why should we bind
18:04
this Del C 501 to the remote I p
18:10
1 51 a 1 45.1 which is rather ones i p
18:15
the reason being, because we are on a sub interface. And remember, I said that some interface do not automatically ask for the remote I p that is bound to the local del see. In other words, some interfaces do not do inverse art. So since I'm not doing this
18:33
with inverse are up, unless manually create an inverse our table.
18:38
The commands in text for that is
18:42
frame really
18:45
map I p
18:48
then the i p address of the remote. And so I'm trying to go to Router
18:52
one
18:52
whose I p is 101
18:55
1 51 01 45
18:57
dot
19:00
one. Then I have told you I'm being the
19:03
service provider that you're using five or one to get to rather one who simply I type in five or one and then a keyword broadcast, which I will discuss in a little bit.
19:15
So the importance of this key word broadcast I will discuss in a little bit. So we will move on for now,
19:22
then frame relay map. I p 1 51 01 45 that change the last field or two and five or two is going to route or two.
19:33
And then 503 My del c Final three right here. I told you guys is going to rot. Or three
19:48
503 is going to round three.
19:52
Let's look at our running config. Do show. Ron
19:56
and I have all three statements
19:59
undermined your face I have sent told the router to take del C five or want to get to the 50.1 address five or two to get to the dock to address 53 to get to the 530.3 address.
20:11
Now let's go configure Rider 12 and three.
20:15
So
20:19
groups I don't know. I exited out of that sub interface. Let's go back into that sub interface.
20:26
And if I say do Lou show frame
20:29
really PVC, The Onley DLC available to Router one is 105
20:37
So first I need to go to the other side.
20:41
I need to map to rather five frame. Really Map
20:47
I p
20:48
1 51 01 45.5 which is rather five address to get to route or five. I'm going to be using the locally received L C 105
21:02
and the key word broadcast.
21:07
Now if I wanted to ping or get to route or two
21:11
at this point,
21:12
I need to also map to router to
21:17
If you look,
21:18
I have mapped to router five at this point. And if I ping Router five and Router five remember, it's Matt map back to us.
21:27
If I do Ping
21:30
1 51 01
21:33
45.5.
21:34
It works.
21:37
But if I said do debug I p packet and a ping dot too
21:45
again it says encapsulation failed
21:55
because since
21:56
I have not mapped
21:57
yet to our two, if I said you show a run
22:03
my map statement on Lee goes to router five. So I know to get to the 50.5 address I can take Del C 105 I do not know
22:14
how to get to the dock to address and what del sea do take. So I must inform the router again for m really map
22:22
I p
22:23
1 51 01
22:32
$45 too.
22:33
And I'm gonna use the same del c
22:37
to get to router to
22:40
because
22:41
they'll see one or five takes me from Router won two out of five. And since there is no del sea between router one and router to,
22:49
I have to go to rot or five before I get to write her to sew to four traffic throughout our two router, one will think. Okay, I just need to forward it down, Del c 105
23:00
which will get two out of five and then when it gets around or five Router five. News How to get to out or two
23:07
that is tagged L C. Five or two before traffic down to out or two.
23:15
So I lost map to route or two
23:18
on Del C 105 And if I would like to get to Router three,
23:23
I have to also map to Router three.
23:27
Now let's go Finish up Router Chu
23:37
frame Really map. Well, let's check to see what Chelsea We're getting you show frame. Really PVC
23:47
and the DLC to get to route or five is 205 So I will Mac two out of five frame relay
23:55
map.
23:56
I p
24:00
1 51 1 45 5
24:03
205
24:04
broadcast.
24:07
Now, if you notice when I'm apt to
24:11
my router
24:15
one and my router
24:17
three.
24:19
I'm excluding the keyword broadcast. This is for a reason.
24:25
We will come to it in a minute. When I discussed that broadcast keyword
24:30
At this point, I'm done mapping router one router to and router five. I have not touched route are three for now. We're gonna leave that alone for a minute.
24:41
Now
24:42
let's just check out running conf eggs.
24:45
Sure, run
24:48
and I have a map to round or five,
24:52
22 and 23 from Rather one.
24:56
And I've used the broadcast keyword on Lee with my map statement to route or five
25:02
again
25:03
on Router to
25:10
I have mapped to route or five
25:12
and rather one and router three.
25:15
But I have on Lee used the broadcast keyword with the map statement to Router five.
25:22
Same with router five. I have mapped to router to and router three
25:32
12 and three have map to 12 and three, and I've used the broadcast keyword with all three devices. So if you look at it, I'm only using the broadcast keyboard when I'm mapping to a directly connected devices between daughter one and 5 to 153 and five,
25:51
but not between router one and two or
25:52
two and three.
25:55
Now I can look at these maps statements in my running config or I could execute the command
26:00
douceur frame.
26:03
Really not.
26:06
And you see
26:07
that day L C five or one is map 2.150 tomb after dot to 503 zmapp 2.3
26:15
all reside on interferes 0.1 on the status is
26:22
active,
26:22
active, active and active.
26:26
However, you see the keyword static here, guys,
26:30
this means this
26:32
DLC toe I p mapping was statically created that you configured it.
26:40
I look at my map statements on router one
26:44
show strain map
26:47
and again all three of Fung are
26:51
statically configured.
26:53
However, the broadcast keyword Onley exists
26:57
with the DLC drought or five
27:00
105 with the map statement to route or five but not wood rot or two or three
27:06
Same went round or two.
27:15
The broadcast keyword only exists with the map statement with drought or five. All three are statically defined and all three
27:23
are active.
27:26
Active, this kind of ward wraparound
27:29
and active
27:32
now router want
27:33
five and two should be able to pay each other. So let's see
27:38
Pink 1 51 a 1 $45.5 whips.
27:45
Let's turn off debugging
27:47
and then paying again pings
27:49
and rotter to will also Ping.
27:55
Now let's go see what's going on in Router. Three. Can beeping rather three. Absolutely not.
28:02
So let's see what's going on
28:03
on Router three.
28:07
If I check.
28:10
Sure frame. Really, Matt, remember, we did not manually configure mapping on router three at all.
28:18
But since this is a main interface,
28:21
not a sub interface, rather three automatically sent out an inverse ARP request on Del C three or five, which is the DLC router three is using
28:30
to get to route or five
28:33
to map automatic need L C T 05 to router fives. Address.
28:40
So Router three sent out an inverse our request down the circuit to Router five and got router fives. I p. Back and mapped it onto Del C three or five.
28:49
However you see
28:51
you only map to directly connected devices using inverse are you are not map to router to a router? One.
28:59
If I wanted to reach out her two or one right now, Router five would be available to me. If I paying Router five. I can. But if I ping grounder to, for example, I cannot,
29:11
I would have to manually map, too.
29:15
Those two routers under the man interface. Since we're using the man interface in this case,
29:21
I would say frame really
29:22
map I P. Well, let's check the DLC. Let me just quickly show you the DLC sure frame PVC
29:30
router three. Using Del See to your five to get to route or five.
29:34
So you get to out or two and one throughout or five. We say Fame really Map I p 1 51 1 45 1 which is rather one
29:45
to your five
29:48
and then router chew 305 But without the broadcast keyword elaborate on the lost broadcast Keyword in a minute.
29:59
Now if I say show frame relay nap, I see that my mapping to four out of five is still dynamic, which means achieved to inverse AARP but two rather one and router to ecstatically defined.
30:15
Will I be able to ping round or two?
30:18
And yes, I can and I can hang Router one also.
30:23
So now that we have into in connective ity,
30:30
what about this broad cat broadcast keyword in my math statement show
30:38
show running config.
30:41
So we will take router to to explore this further.
30:48
Now I have the broadcast keyboard right now only with the map statement. With drought or five.
30:56
The broadcast key bird
30:57
enables a non broadcast technology like frame really to be able to send a simulated broadcast
31:06
as a unique cast to everybody
31:10
instead of a broadcast let me elaborate on that.
31:12
So
31:15
when I have the broadcast keyword
31:18
infront off a map statement,
31:21
the router will send a uni cast for every broadcast keyword in front that exists in front of a map statement.
31:30
So if I had maps, statements,
31:32
if I had a map statements with the broadcast keyword for all three statements,
31:37
I will say that again messed up there. So this broadcast keyword, who enabled the sending off a simulated broadcast over a non broadcast multi access network, like for him really
31:51
basically a router? What a rotter will do
31:53
is send out a unique cast
31:56
for every Map statement that has the broadcast keyword in front of it.
32:01
Once again,
32:04
the router will send out a unique cast
32:06
for every Map statement
32:09
that has the broadcast keyword in front of it.
32:13
Basically, this enables the use off routing protocols, which sent their routing update packets to either multi CASS addresses or broadcast addresses over frame, Really,
32:25
and the reason we only use the broadcast key bird
32:30
between directly connected devices on maps, statements between directly connected devices like between rather five and 1 505 and three, not between 12 and two and three
32:39
is because when you exchange routing updates, you only do so between directly connected devices.
32:46
So one and five will exchange routing updates. Let's say if you're running around information protocol, but one into wooden. So I used on Router one. I would use the map statement only
32:58
with the map statement with route or five. As you see I have done.
33:04
Now what happens if I include the keyword broadcast
33:08
with every map statement? What happens then?
33:13
Well, let's find out going to my interface.
33:17
I
33:20
do this statement again and add the broadcast keyword.
33:23
Well, maybe I can and I have to take it away first
33:28
and then added back with the
33:30
rod cast keyword,
33:34
then same with the 3rd 1
33:36
I'm gonna take it away
33:37
and
33:40
added back in with the broadcast keyword.
33:44
So take it away with no friend, really map I p
33:47
Command.
33:49
Then add the broadcast keyword letters B R
33:53
and then added back Toa do show run. I should have the broadcast keyword with all three.
34:00
Okay,
34:01
now I have the broadcast keyword with all three statements.
34:06
No, let's see what happens if I ping route or five
34:10
1 51 01 $45 3 I'm doing an extended ping route or five. I mean to say,
34:19
Well, actually, I'm not gonna ping Router five. I'm going to send out a broadcasting,
34:27
and my repeat count is going to be one
34:30
on Router five. I'm gonna debug icmp
34:34
so de Berg I p i c m p.
34:39
Now, if I send out this one ping
34:43
from rather one this one ping let's see what happens on route or five.
34:50
As you see already. Instead of one ping, I sent out three pings and if you go to outer, five out of five received three pings.
35:00
The reason being
35:01
on Router one, I had changed the broadcast keyword to all three friends have statements.
35:07
So I sent out one copy off that broadcast ping
35:13
per map statement that had a broadcast keyword in front off it.
35:17
This is actually a still a unique ***, but
35:22
at later, too. But it simulates a broadcast.
35:27
Anyhow, this concludes the multi point frame relay lecture

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Cisco CCNA

Our free, online, self-paced CCNA training teaches students to install, configure, troubleshoot and operate LAN, WAN and dial access services for medium-sized networks. You'll also learn how to describe the operation of data networks.

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Junaid Memon
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