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In the previous video, we already configure
static routing in two router.

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Next in this video, we are going to add 1 more router.

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Let’s just start, import new
router, and also import 1 new pc.

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Connect the pc to the router,

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and we also need to connecting
router 2 with new router,

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but let’s change the router name
first, let’s say this is router 3.

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The problem is, this router is only
have 2 interface. Let’s check it,

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do show ip interface brief, here we
can see that we only have fa0/0 and fa0/1.

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So we can not connecting router 2 to router 3.

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Let’s try it. Here we get an error the
cable cannot be connected to that port.

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So we need to add additional interface in router 2.

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But before that, let’s save the
configuration first.

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Then go to physical,

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let’s shutdown the router.

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Now let’s add new interface, we will use
NM-1FE-TX, okay let’s turn on the router again.

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Let’s try to connecting router 2 to router 3 again,

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okay here we can see that we can connecting
router 2 to router 3, the interface is fa1/0.

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Next for ip addressing, in the router 2,

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the ip address will be 10.20.20.1/24,
router 3 will be 10.20.20.2/24.

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And then router 3 that connected
to pc 3, the ip address will be

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192.168.3.1/24, and in the pc, the
ip address will be 192.168.3.10/24.

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Okay now let’s start the configuration, let’s
start from router 2. Enable, configure terminal,

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interface fa1/0, no shutdown, and the
ip address is 10.20.20.1 255.255.255.0.

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Okay we have done in router 2,
next let’s configure router 3.

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No, enable, configure terminal, interface fa0/1,

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no shutdown, the ip address is 10.20.20.2
so here 10.20.20.2 255.255.255.0.

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Next let’s configure fa0/0, the ip
address is 192.168.3.1 255.255.255.0.

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Here we can see that the light is red, so we
need to no shutdown. Let’s check it first,

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do show ip interface brief,
okay here I do a mistake.

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Let’s configure the ip address of fa0/1
again, ip address 10.20.20.2 255.255.255.0,

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and then go to int fa0/0, no shutdown, here
we can see that now the light is green.

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And then the ip address is
192.168.3.1 255.255.255.0.

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Okay now we have done in router 3. Last,
let’s configure the ip address of pc 3.

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Desktop, ip configuration, the ip address
is 192.168.3.10, the gateway is 192.168.3.1.

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Okay now we have done, configuring
an ip address in all router and pc.

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Now let’s analyze the routing.

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In the previous video, we already add
static routing in router 1, let’s write it,

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S this is means static, the destination is
192.168.2.0/24 and the next hop is 10.10.10.2.

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In the router 2, we also already
add static routing, let’s write it,

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the destination is 192.168.1.0/24
and the next hop is 10.10.10.1.

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Last for router 3, we don’t
configure static routing yet,

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so router 3 should have only 2
network in the routing table,

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which is 10.20.20.0/24 and 192.168.3.0/24,
because this two network is connected to router 3.

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Let’s write it. 10.20.20.0/24 is in
fa0/1, and 192.168.3.0/24 is in fa0/0.

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Oh ya one more thing, in router 2 must be
have new entry in the routing table,

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which is 10.20.20.0/24, because this is connected to
router2, and this network is connected to fa1/0.

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Okay I think enough for this video, in the next
video, we are going to configure static routing

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so pc 3 can communicate with pc 1 and pc 2.

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Thankyou for watching and see you on the next video.