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- We're gonna start
adding some configuration

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to these devices.

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So we're gonna add IP
addresses and static routes.

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By the time we're done with
this particular section

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we still will not have
end-to-end connectivity,

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because we haven't completed
our VLAN configuration

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and spanning tree yet,

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so we will not have
end-to-end connectivity

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at the end of this section yet.

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So let's go ahead and
add our IP addresses,

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and static routes where they need to be.

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So, let's bring our topology
diagram back in to play.

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And in case you had not already
taken a screen shot of this,

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you will want to,

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because these are the IP addresses

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we're gonna want to implement.

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Now once again, when you're building this,

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you can use whatever
IP addressing you want,

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I just chose this to make it simple.

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Okay, so I'm going to start with,

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let's start just working
from left to right.

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I'll start with router-1,

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and I will turn him on.

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I've got quite a few
devices in this topology

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so I may not want to turn them on.

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Let's see here actually I've
only got one, two, three, four,

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I've got five IOS
devices, so it's probably

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pretty safe to turn them all on at once.

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Okay, so let's go ahead
and go into router-1 now.

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As that's coming up, it's
gonna be fast ethernet 0/0

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on this particular router that
we're gonna want to configure

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as an 802.1q trunk.

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So we're basically configuring
what's called a router

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on a stick as this point.

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The interface fast ethernet 0/0.

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All we have to do here is no shut.

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But before I do that,

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I'm gonna wanna create my sub-interfaces.

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And I'm supporting VLAN's
four and five, so I'll do

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subinterface four to begin with.

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It could be any number I
want, I'm just choosing that.

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Encapsulation dot1q 4,

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That makes sure that he
understands that 802.1q tags,

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and that anything that arrives with a tag

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value of four, or needs to
leave with a tag value of four,

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the VLAN of four, will use
this particular sub-interface.

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And then select the correct IP address.

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Alright, and then rinse and repeat.

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Do the same thing for
our next sub-interface.

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I'm just using the up arrow here

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to go through my command history.

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Just making slight changes as we go along.

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Okay, now before I leave this,

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I also need to put in a static route,

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and then the last thing I'll do

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is bring up that physical interface.

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Alright so static route.

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Why don't we just create a
single default route in this guy?

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Because really there's
only one way out on him,

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he doesn't have multiple egress points.

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So IP route 0.0.0.0 0.0.0.0,

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that says anything you don't know about,

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let's have him go to...

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Well he's got two possible
people he could go to,

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VLAN-4, or VLAN-5 on his

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counterpart which is router-2.

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So doesn't really matter,
we'll just select one of them.

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Let's select in this particular case...

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Let's do it this way.

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Let's bring in this drawing here.

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Let's configure Router-1 so
that if he's trying to get

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to the 2.3.2 network,

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he'll go across VLAN-4,

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and if he's trying to
get the 3.2.3 network,

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he'll go across VLAN-5.

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So that will necessitate two different

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static routes in router-1.

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Alright so, to get to the 2.3.2 network,

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your next hop is gonna be 1.2.4.2

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00:04:09,779 --> 00:04:12,446
and to get to the 3.2.3 network,

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your next hop will be 1.2.5.2,

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and now the last thing is
we need to go back into his

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physical interface and bring it up.

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Save our configuration.

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Okay so we are done with that router.

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I can get rid of him.

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Now as far as IP addressing is concerned,

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let's go over to the far right,

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and go to router-3.

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Configure router-3.

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It's gonna be pretty much the same

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kind of thing as we did in router-1.

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So I'll just start by
configuring my static routes,

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IP route 1.2.4.0

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255 255 255 0

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and we want that to go to
the next hop of 2.3.2.2,

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an IP route of 1.2.5.0,

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we want that to go to 3.2.3.2.

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Okay that'll accomplish
load balancing on that side,

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and then go to interface
fast ethernet 0/0,

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let's make sure it really was 0/0,

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yep 0/0,

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okay so we're dealing
VLANs two and three here,

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so I'll make this sub-interface-2 ,

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encapsulation dot1q 2,

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IP address 2.3.2.3

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and then we'll create
a sub-interface vlan-3.

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3.2.3.3

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and then lastly

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we'll bring up our physical interface.

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And save that configuration.

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Okay, so we're done with router-3.

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Now let's go over and
configure the IP addressing

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on router-2 here in the middle.

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Okay, so let's start with
his fast ethernet 0/1,

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so we're not trunking
on these two interfaces,

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these are just regular routed ports

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with just a single subnet.

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So, interface fast ethernet 0/1

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that's going to be IP address of 2.3.2.2,

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no shut,

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and the other one if fast ethernet 1/0,

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IP address 3.2.3.2,

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no shut.

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Okay, and now we have to
configure fast ethernet 0/0

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as a trunk.

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Now before we do that,

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at this point we should have
end-to-end IP connectivity

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between router-2 and router-3,

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we already previously created the VLANs

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and created the trunks in switch-1,

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now we've completed our router on a stick

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over here on router-3,

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and we've configured our
IP addresses on router-2,

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so we should be able to ping
our directly connected routers

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across that link,

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let's see if we can.

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If not we have we'll have to

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do a little bit of troubleshooting.

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So I'm on router-2 right now,

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ping 2.3.2.3

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he's arping for it,

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00:07:55,273 --> 00:07:56,822
great, success,

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00:07:56,822 --> 00:07:59,780
ping 3.2.3.3,

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he's arping for it,

146
00:08:01,566 --> 00:08:02,714
and success.

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Wonderful.

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00:08:03,903 --> 00:08:05,904
Okay so now we just have
one little step left

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00:08:05,904 --> 00:08:08,557
on router-2 we gotta
configure this side over here

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00:08:08,557 --> 00:08:10,450
as a router on a stick,

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00:08:10,450 --> 00:08:11,950
by making a trunk.

152
00:08:13,260 --> 00:08:17,427
So interface fast ethernet 0/0.4

153
00:08:19,674 --> 00:08:22,571
to support vlan-4,

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encapsulation dot1q 4,

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IP address 1.2.4.2,

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and sub-interface for vlan-5,

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which will be 1.2.5.2,

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okay, save the configuration.

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Now in this particular case

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there are no static routes
necessary on router-2

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because every single
subnet in this topology,

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he's directly connected to.

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00:09:01,520 --> 00:09:03,845
There's no subnets here
that he's not actually

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00:09:03,845 --> 00:09:06,418
connected to on some kind of interface,

165
00:09:06,418 --> 00:09:08,427
so we don't need any kind of static routes

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00:09:08,427 --> 00:09:09,927
configured on him.

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And that concludes this
particular section,

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00:09:13,210 --> 00:09:16,198
this section was focused
on adding IP addresses

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and static routes and we have done that,

170
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so now in the next sections,

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we're really gonna get into the meat

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of configuring switching commands

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on our EtherSwitch routers.