Here is our frame. Really apology for our lab.
The cloud in the middle
represents the Internet service provider or your service for lighter cloud. And I have pre configured it
for C CNN purpose as you do not need to know how to configure this cloud or how the service for later
As you see, this is ah ha been spoke Topology.
Roger. 12 and three are connected to a router. Five. There is no direct PVC or virtual circuit between router 12 and three.
Rather five has three virtual circuits. One to roger, 1 to 2 outer two and another 12 out of three.
All three spoke routers, namely 12 and three have a PVC or a virtual circuit to route or five.
Let's go into round or five
and from config mode
go into our interface serial zero
this interface right here.
And all these interfaces I've selected as 000 interfaces.
we go into the interface
and we change out encapsulation
Then we do a no shutdown.
Well, before I move on,
if I just say encapsulation frame relay space question mark.
because it could show up on the test that there are two types off frame relay encapsulation sze
one. Is your default
frame really encapsulation? So if I say encapsulation frame, relay and hit enter
that is your default frame relay encapsulation
Cisco frame relay encapsulation.
And in this Cisco proprietary,
the other kind is I e T f, which is your open standard,
so I e. T f stands for International
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.
If I leave out i e t f. I'm simply running the default Cisco frame to the encapsulation type.
We'll keep it at Cisco and then no, shut the interface
at this point in my interface is up and should be talking to the provider edge frame relay switch
and I should have started sending and receiving LM eyes.
Let's do the command or execute the command do show
frame. Really? L am I.
Now you see that number status increase sent
and received has incriminated from 0 to 7 and six.
Let's do this command again
and see if this number increments
and now it's incremental to 10 and nine.
Now this number status messages received.
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.
If this field is not incriminating, it means you're not talking
to your frame relay network
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.
And the first thing you should say is, I'm not receiving alum eyes because I don't see them increments every 10 seconds.
with Ella Mai's, there are three types of Elham eyes, so if I execute the command
frame, really Ln my type space question mark,
you have an see Cisco and Q 933 A.
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
if I do not do anything about the frame really, ever my type
in Defaults to Sisko.
Since this is a Cisco router
now, I have changed my encapsulation type to frame, really. And I am receiving Elem eyes from the provider Edge
and McCallum eyes are incriminating
and as up to 31 from 13. Since I have been talking,
let's check our P V C's.
three del. She's remember guys Del sees identify P V. C's.
I'm getting the del c 5015 or two and 503 and right now Altria from, say, unused
and the PVC status is inactive as reported to us through our Elem eyes.
Remember, folks Ella Mayes report the end to end circuit health.
These are enacted because we haven't really done anything on the other other side.
What if I go over to router one
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.
So on router 5501 goes to
five or two goes to if I could type
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.
So if I want to our 15 or two to our 25432 or three.
Okay, So if I go on our to our one
serial 000 which is connected to the frame Cloud
change, man Consolation to frame relay
and executed No shutdown commands.
And make sure I'm sending and receiving Elem eyes do show
frame. Really? L am I.
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,
And now if I check this PVC on route or five,
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
PVC number 502 says inactive. And 503 also stays inactive. Five or three going to rubber tree.
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
now on route or five. I'm not going to do frame relay from the main interface. Remember, I said
you could have a frame relay main interface, which is, by default, a multi point interface.
Or you could have a multi point sub interface or point to point some interface.
So we're gonna do frame relay on rather five from a sub interface.
Now, the first part of our lab, I'm going to do multi point frame relay all around.
Then I will erase Maiken Figs and come back and do Another lab would point to point frame,
I'm gonna create my first sub interface interface. Serial zero size zero slash zero And if I say dot
one, which is my first sub interface space question mark,
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.
So I create a multi point sub interface and hit Enter
and my interface is up
and my my prompt changes to config summit
now as an I p address ing scheme.
In this multi point frame relay environment,
allrounders 123 and five are going to be residing in the same sub net.
So I'm just simply going to use our old friend.
The networks have been using over Ethernet
the 1 51 01 45 0 slash 29 network, and then I can assign router 1.1 router to dot to Router three. Doctor,
0.1 is going to be Rod Awan.
is going to be grounded, too,
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
1 51 a 1 $45. 525525555
I've assigned my I p address on Router five.
Let's go sign an I p address on router one.
Rather one. Also, I'm going to create a sub interface I nt a 000 dark one.
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.
What's that specify? Multi point interfaced comes up and I say I'd be addressed. One
1 51 a. 1 45.1355255255 to 48
router to again I'm going to do on the sub interface.
Change my encapsulation typed your fame really do a no shuts down
Really? L am. I make sure I'm getting
It went from 3 to 4. Should have gone to five by now,
and in doing two from four,
and assigned an I P address of 1 51 01
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.
And I'm going to create my sub interface as 0.1000 dot one
and assigning the I will sign the I P address
So I p address 1 51 1 45 dot 2255255255 to 48 which is this last 29 network.
And let's go to Router three
interface. Serial 000
encapsulation strain relay.
No, shut down. Let's check to see if we're getting our Ellen eyes with Joe show
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.
I've received four messages for Ella Mayes
and it incrementally to six.
So I am receiving lm eyes and talking to my friend. Really cloud
for Router three. Though I am not going to create a sub interface, I'm simply gonna assign
the i P address on the main interface.
So do show I p interface brief Router three has its address on the main interface.
has a sub interferes. You sure? I p I and debrief
and router choose I p is on interface 0.1.
Router one also has his i p
address on serial 0.1
and router five is also
also has his i p address
You should be. And debrief
has his i p address on s 0.1
or the some interface.
Now, if I try and pin between router 500 to 1.
Why not? Let's sit debug do debug. I'd be
and then let's try and ping again.
I'm getting a message
that it has been routed.
Why are the routing table or the route information base routed via rib?
But the encapsulation failed.
Now what does that mean?
this means that I was not able to encapsulate my layer three packet inside off a layer to frame.
looks up its routing table
and let's look at rather five surrounding table Do show. I pull you out
and finds the network 1 51 a 1 $45.0 is directly connected.
Now we're trying to paint 1 51 1 45.1
which means Router five now
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.
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
and a destination address of 1 51 1 45.1 which is rather one
network is directly connected row. Row five needs to build a frame relay frame for transmission on the local data link.
For that router, five needs to know
However, we have all three. Del sees
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.
For that, we must manually
bind the DLC to the remote i p.
Now, why should we bind
this Del C 501 to the remote I p
1 51 a 1 45.1 which is rather ones i p
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
with inverse are up, unless manually create an inverse our table.
The commands in text for that is
then the i p address of the remote. And so I'm trying to go to Router
one. Then I have told you I'm being the
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.
So the importance of this key word broadcast I will discuss in a little bit. So we will move on for now,
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.
And then 503 My del c Final three right here. I told you guys is going to rot. Or three
503 is going to round three.
Let's look at our running config. Do show. Ron
and I have all three statements
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.
Now let's go configure Rider 12 and three.
groups I don't know. I exited out of that sub interface. Let's go back into that sub interface.
And if I say do Lou show frame
really PVC, The Onley DLC available to Router one is 105
So first I need to go to the other side.
I need to map to rather five frame. Really Map
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
and the key word broadcast.
Now if I wanted to ping or get to route or two
I need to also map to router to
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.
But if I said do debug I p packet and a ping dot too
again it says encapsulation failed
yet to our two, if I said you show a run
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
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
And I'm gonna use the same del c
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,
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
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
that is tagged L C. Five or two before traffic down to out or two.
So I lost map to route or two
on Del C 105 And if I would like to get to Router three,
I have to also map to Router three.
Now let's go Finish up Router Chu
frame Really map. Well, let's check to see what Chelsea We're getting you show frame. Really PVC
and the DLC to get to route or five is 205 So I will Mac two out of five frame relay
Now, if you notice when I'm apt to
I'm excluding the keyword broadcast. This is for a reason.
We will come to it in a minute. When I discussed that broadcast keyword
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.
let's just check out running conf eggs.
and I have a map to round or five,
22 and 23 from Rather one.
And I've used the broadcast keyword on Lee with my map statement to route or five
I have mapped to route or five
and rather one and router three.
But I have on Lee used the broadcast keyword with the map statement to Router five.
Same with router five. I have mapped to router to and router three
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,
but not between router one and two or
Now I can look at these maps statements in my running config or I could execute the command
that day L C five or one is map 2.150 tomb after dot to 503 zmapp 2.3
all reside on interferes 0.1 on the status is
active, active and active.
However, you see the keyword static here, guys,
DLC toe I p mapping was statically created that you configured it.
I look at my map statements on router one
and again all three of Fung are
However, the broadcast keyword Onley exists
with the DLC drought or five
105 with the map statement to route or five but not wood rot or two or three
Same went round or two.
The broadcast keyword only exists with the map statement with drought or five. All three are statically defined and all three
Active, this kind of ward wraparound
five and two should be able to pay each other. So let's see
Pink 1 51 a 1 $45.5 whips.
Let's turn off debugging
and then paying again pings
and rotter to will also Ping.
Now let's go see what's going on in Router. Three. Can beeping rather three. Absolutely not.
So let's see what's going on
Sure frame. Really, Matt, remember, we did not manually configure mapping on router three at all.
But since this is a main interface,
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
to get to route or five
to map automatic need L C T 05 to router fives. Address.
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.
you only map to directly connected devices using inverse are you are not map to router to a router? One.
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,
I would have to manually map, too.
Those two routers under the man interface. Since we're using the man interface in this case,
I would say frame really
map I P. Well, let's check the DLC. Let me just quickly show you the DLC sure frame PVC
router three. Using Del See to your five to get to route or five.
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
and then router chew 305 But without the broadcast keyword elaborate on the lost broadcast Keyword in a minute.
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.
Will I be able to ping round or two?
And yes, I can and I can hang Router one also.
So now that we have into in connective ity,
what about this broad cat broadcast keyword in my math statement show
show running config.
So we will take router to to explore this further.
Now I have the broadcast keyboard right now only with the map statement. With drought or five.
The broadcast key bird
enables a non broadcast technology like frame really to be able to send a simulated broadcast
as a unique cast to everybody
instead of a broadcast let me elaborate on that.
when I have the broadcast keyword
infront off a map statement,
the router will send a uni cast for every broadcast keyword in front that exists in front of a map statement.
So if I had maps, statements,
if I had a map statements with the broadcast keyword for all three statements,
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
basically a router? What a rotter will do
is send out a unique cast
for every Map statement that has the broadcast keyword in front of it.
the router will send out a unique cast
for every Map statement
that has the broadcast keyword in front of it.
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,
and the reason we only use the broadcast key bird
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
is because when you exchange routing updates, you only do so between directly connected devices.
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
with the map statement with route or five. As you see I have done.
Now what happens if I include the keyword broadcast
with every map statement? What happens then?
Well, let's find out going to my interface.
do this statement again and add the broadcast keyword.
Well, maybe I can and I have to take it away first
and then added back with the
then same with the 3rd 1
I'm gonna take it away
added back in with the broadcast keyword.
So take it away with no friend, really map I p
Then add the broadcast keyword letters B R
and then added back Toa do show run. I should have the broadcast keyword with all three.
now I have the broadcast keyword with all three statements.
No, let's see what happens if I ping route or five
1 51 01 $45 3 I'm doing an extended ping route or five. I mean to say,
Well, actually, I'm not gonna ping Router five. I'm going to send out a broadcasting,
and my repeat count is going to be one
on Router five. I'm gonna debug icmp
so de Berg I p i c m p.
Now, if I send out this one ping
from rather one this one ping let's see what happens on route or five.
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.
on Router one, I had changed the broadcast keyword to all three friends have statements.
So I sent out one copy off that broadcast ping
per map statement that had a broadcast keyword in front off it.
This is actually a still a unique ***, but
at later, too. But it simulates a broadcast.
Anyhow, this concludes the multi point frame relay lecture