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In the previous video, we already add one
router to our topology, so now we have 3 router.

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Next in this video, we are going to configure
static routing so pc 3 will able to communicate

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with pc 1 and pc 2.

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Let’s just start.

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Let’s start with pc 1, let’s say pc1 want
to communicate with pc 3, so the source is

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192.168.1.10, and the destination is 192.168.3.10,
so pc 1 will ask router 1,

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"hey router 1 do you know where is 192.168.3.10?" then router 1 will check it in the routing table,

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and here we can see that router 1 don’t know about 192.168.3.10
yet.

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So pc 1 can not communicate with pc 3.

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Next, let’s try from pc 2.

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Let’s say pc 2 want to communicate with pc 3,
so the source is 192.168.2.10, and the destination

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is 192.168.3.10, pc 2 will ask router 2, "hey
router 2 do you know where is 192.168.3.10?"

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then router 2 will check the routing table,
and here we can see that router 2 don’t know

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about 192.168.3.10 yet.

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So pc 2 also can not communicate with pc 3.

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The summary is pc 1 and pc 2 can not communicate
with pc 3 yet, so we need to configure static routing.

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Let’s start from router 1.

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If we see in the topology, we have total 5
network, which is 192.168.1.0/24, 10.10.10.0/24,

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10.20.20.0/24, 192.168.2.0/24, and 192.168.3.0/24.

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So here we have 1 2 3 4 5.

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We have 5 different network.

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So each router must have 5 network in their
routing table.

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Here router 1 still have 3, router 1 know about
10.10.10.0/24, 192.168.1.0/24 and 192.168.2.0/24,

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router 1 don’t know about 10.20.20.0/24 and
192.168.3.0/24 yet.

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So we need to add 2 static routing in router 1.

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Let’s start.

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Enable, configure terminal, let’s add static
routing to 10.20.20.0 first, so ip route 10.20.20.0

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255.255.255.0, the next hop will be router 2,
which is 10.10.10.2.

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Next, let’s add static routing to 192.168.3.0/24,
so ip route 192.168.3.0 255.255.255.0,

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and then the next hop is still router 2.

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Which is 10.10.10.2

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Okay now we have done in router 1.

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Let’s write it, actually this is optional,
but for learning, I think this is important

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to write the routing table here.

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Okay next let’s configure on router 2.

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Router 2 should have 5 network in the routing
table, here we can see that router 2 already

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have 4 network, so we just need to add one
more network to routing table,

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which is 192.168.3.0/24, so
ip route 192.168.3.0 255.255.255.0

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and the next hop is router 3, which is 10.20.20.2.

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Let’s verify it, do show ip route, okay
here we can see that now router 2 know about

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192.168.3.0/24, the next hop is 10.20.20.2.

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Let’s also write the routing table here.

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Once again, this is optional.

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Okay now router 2 already have 5 network in
the routing table, last, let’s configure

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on router3.

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Here we can see that router3 only have 2 network,
which is 10.20.20.0/24 and 192.168.3.0/24,

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so we need to add 3 static routing, which
is 192.168.2.0/24, 10.10.10.0/24, and 192.168.1.0/24.

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Let’s start, enable, configure terminal,
let’s add routing to pc 2, so ip route 192.168.2.0

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255.255.255.0, the next hop is router 2, which
is 10.20.20.1.

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Next let’s add static routing to 10.10.10.0/24,
so ip route 10.10.10.0 255.255.255.0

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and the next hop is also router 2, which is 10.20.20.1.

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Last, let’s add static routing to pc 1, so
ip route 192.168.1.0 255.255.255.0

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and the next hop is still 10.20.20.1.

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Okay now we have done in router 3, let’s
verify it, do show ip route.

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Here we can see that we have 2 connected routing,
and 3 static routig.

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Now we have done configuring static routing
on all router.

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Let’s try ping between all pc. Let’s try
from pc 2 to pc 3 first, ping 192.168.30.10,

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okay here we can see that the result is success.

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Next let’s try from pc 1 to pc 3, ping 192.168.3.10,
okay here the result is also success.

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Okay, I hope you understand about static routing.

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I think enough for this video, in the next
video, we are going to learn about dynamic routing.

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Thankyou for watching and see you on the next
video.
