The document details the subnetting of network 172.20.0.0/21 into multiple subnetworks and VLANs using CIDR notation. It also describes the configuration of three routers to route between the subnetworks, including interface IP addresses and RIP routing protocol configuration. Servers for different networks on the campus are specified, including mail, DHCP, and DNS servers.

1. Caso Final CCNA 1
RED: 172.20.0.0 /21
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

2. REPRESENTACIÓN GRÁFICA
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

3. 1. SUBNETEO DE RED: 172.20.0.0 /21
Red Direccion de Red Rango BroadCast Mascara LAN
1 172.20.0.0 /21 172.20.0.0 172.20.0.1 - 172.20.7.254 172.20.7.255 255.255.248.0
1.1 172.20.0.0 /22 172.20.0.0 172.20.0.1 - 172.20.3.254 172.20.3.255 255.255.252.0 RED A
1.2 172.20.4.0 /22 172.20.4.0 172.20.4.1 - 172.20.7.254 172.20.7.255 255.255.252.0
1.2.1 172.20.4.0 /23 172.20.4.0 172.20.4.1 - 172.20.5.254 172.20.5.255 255.255.254.0 RED B
1.2.2 172.20.6.0 /23 172.20.6.0 172.20.6.1 - 172.20.7.254 172.20.7.255 255.255.254.0
1.2.2.1 172.20.6.0 /24 172.20.6.0 172.20.6.1 - 172.20.6.254 172.20.6.255 255.255.255.0
1.2.2.2 172.20.7.0 /24 172.20.7.0 172.20.7.1 - 172.20.7.254 172.20.7.255 255.255.255.0
1.2.2.2.1 172.20.7.0 /25 172.20.7.0 172.20.7.1 - 172.20.7.126 172.20.7.127 255.255.255.128 RED D
1.2.2.2.2 172.20.7.128 /25 172.20.7.128 172.20.7.129 - 172.20.7.254 172.20.7.255 255.255.255.128
1.2.2.2.2.1 172.20.7.128 /26 172.20.7.128 172.20.7.129 - 172.20.7.190 172.20.7.191 255.255.255.192
1.2.2.2.2.2 172.20.7.192 /26 172.20.7.192 172.20.7.193 - 172.20.7.254 172.20.7.255 255.255.255.192
1.2.2.2.2.2.1 172.20.7.192 /27 172.20.7.192 172.20.7.193 - 172.20.7.222 172.20.7.223 255.255.255.224 RED C
1.2.2.2.2.2.2 172.20.7.224 /27 172.20.7.224 172.20.7.225 - 172.20.7.254 172.20.7.255 255.255.255.224
1.2.2.2.2.2.2.1 172.20.7.224 /28 172.20.7.224 172.20.7.225 - 172.20.7.238 172.20.7.239 255.255.255.240
1.2.2.2.2.2.2.2 172.20.7.240 /28 172.20.7.240 172.20.7.241 - 172.20.7.254 172.20.7.255 255.255.255.240
1.2.2.2.2.2.2.2.1 172.20.7.240 /29 172.20.7.240 172.20.7.241 - 172.20.7.246 172.20.7.247 255.255.255.248
1.2.2.2.2.2.2.2.1.1 172.20.7.240 /30 172.20.7.240 172.20.7.241 - 172.20.7.242 172.20.7.243 255.255.255.252 RED G
1.2.2.2.2.2.2.2.1.2 172.20.7.244/30 172.20.7.244 172.20.7.245 - 172.20.7.246 172.20.7.247 255.255.255.252
1.2.2.2.2.2.2.2.2 172.20.7.248 /29 172.20.7.248 172.20.7.249 - 172.20.7.254 172.20.7.255 255.255.255.248
1.2.2.2.2.2.2.2.2.1 172.20.7.248 /30 172.20.7.248 172.20.7.249 - 172.20.7.250 172.20.7.251 255.255.255.252 RED E
1.2.2.2.2.2.2.2.2.2 172.20.7.252 /30 172.20.7.252 172.20.7.253 - 172.20.7.254 172.20.7.255 255.255.255.252 RED F
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

4. 2. SERVIDORES
CAMPUS USS:
 MAIL
 DHCP
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

5. CAMPUS UCV
 DHCP-UCV
MAESTRÍA:
 DHCP-Maestría
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

6. CENTRO DE IDIOMAS
 WEB
 DNS
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

7. 3. ROUTER:
ROUTER 0:
Press RETURN to get started.
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter seri 0/0/0
Router(config-if)#ip add 172.20.7.249 255.255.255.252
Router(config-if)#clock rate 56000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
Router(config-if)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#show running-config
Building configuration...
Current configuration : 594 bytes
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
hostname Router
--More--
Router con0 is now available
Press RETURN to get started.
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
interface FastEthernet0/0
ip address 172.20.0.1 255.255.252.0
duplex auto
speed auto
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
interface Serial0/0/0
ip address 172.20.7.249 255.255.255.252
clock rate 56000
interface Serial0/0/1
--More-- no ip address
shutdown
interface Vlan1
no ip address
shutdown
ip classless
line con 0
line vty 0 4
login
end
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router rip
Router(config-router)#version 2
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

8. Router(config-router)#network 172.20.0.0
Router(config-router)#network 172.20.7.248
Router(config-router)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#enable
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.20.0.0/16 is variably subnetted, 7 subnets, 5 masks
C 172.20.0.0/22 is directly connected, FastEthernet0/0
R 172.20.4.0/23 [120/1] via 172.20.7.250, 00:00:12, Serial0/0/0
R 172.20.7.0/25 [120/2] via 172.20.7.250, 00:00:12, Serial0/0/0
R 172.20.7.192/27 [120/2] via 172.20.7.250, 00:00:12, Serial0/0/0
R 172.20.7.240/30 [120/1] via 172.20.7.250, 00:00:12, Serial0/0/0
C 172.20.7.248/30 is directly connected, Serial0/0/0
R 172.20.7.252/30 [120/1] via 172.20.7.250, 00:00:12, Serial0/0/0
ROUTER 01:
--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no]: n
Press RETURN to get started!
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter fas 0/0
Router(config-if)#ip add 172.20.4.1 255.255.254.0
Router(config-if)#no sh
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#inter ser 0/0/0
Router(config-if)#ip add 172.20.7.250 255.255.255.252
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
Router(config-if)#exit
Router(config)#inter ser 0/1/0
Router(config-if)#ip add 172.20.7.253 255.255.255.252
Router(config-if)#clock rate 56000
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Serial0/1/0, changed state to down
Router(config-if)#exit
Router(config)#inter ser 0/0/1
Router(config-if)#
Router(config-if)#ip add 172.20.7.241 255.255.255.252
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

9. Router(config-if)#clock rate 56000
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to down
Router(config-if)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#
Router con0 is now available
Press RETURN to get started.
%LINK-5-CHANGED: Interface Serial0/1/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to up
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/1, changed state to up
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#route rip
Router(config-router)#version 2
Router(config-router)#network 172.20.7.248
Router(config-router)#network 172.20.4.0
Router(config-router)#network 172.20.7.252
Router(config-router)#network 172.20.7.240
Router(config-router)#
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.20.0.0/16 is variably subnetted, 5 subnets, 3 masks
R 172.20.0.0/22 [120/1] via 172.20.7.249, 00:00:06, Serial0/0/0
C 172.20.4.0/23 is directly connected, FastEthernet0/0
C 172.20.7.240/30 is directly connected, Serial0/0/1
C 172.20.7.248/30 is directly connected, Serial0/0/0
C 172.20.7.252/30 is directly connected, Serial0/1/0
Router#
ROUTER 2:
--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter fas 0/0
Router(config-if)#ip add 172.20.7.1 255.255.255.128
Router(config-if)#no sh
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

10. Router(config)#inter serial 0/0/1
Router(config-if)#ip add 172.20.7.242 255.255.255.252
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to up
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/1, changed state to up
Router con0 is now available
Press RETURN to get started.
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router rip
Router(config-router)#version 2
Router(config-router)#network 172.20.7.0
Router(config-router)#network 172.20.7.240
Router(config-router)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.20.0.0/16 is variably subnetted, 7 subnets, 5 masks
R 172.20.0.0/22 [120/2] via 172.20.7.241, 00:00:13, Serial0/0/1
R 172.20.4.0/23 [120/1] via 172.20.7.241, 00:00:13, Serial0/0/1
C 172.20.7.0/25 is directly connected, FastEthernet0/0
R 172.20.7.192/27 [120/2] via 172.20.7.241, 00:00:13, Serial0/0/1
C 172.20.7.240/30 is directly connected, Serial0/0/1
R 172.20.7.248/30 [120/1] via 172.20.7.241, 00:00:13, Serial0/0/1
R 172.20.7.252/30 [120/1] via 172.20.7.241, 00:00:13, Serial0/0/1
Router#
Router con0 is now available
Press RETURN to get started.
ROUTER 3
--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no]: n
Press RETURN to get started!
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter fas 0/0
Router(config-if)#^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter fas 0/0
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

11. Router(config-if)#ip add 172.20.7.193 255.255.255.224
Router(config-if)#no sh
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#inter serial 0/1/0
Router(config-if)#ip add 172.20.7.254 255.255.255.252
Router(config-if)#no sh
%LINK-5-CHANGED: Interface Serial0/1/0, changed state to up
Router(config-if)#exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to up
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router con0 is now available
Press RETURN to get started.
Router>
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#router rip
Router(config-router)#version 2
Router(config-router)#network 172.20.7.192
Router(config-router)#network 172.20.7.252
Router(config-router)#exit
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.20.0.0/16 is variably subnetted, 6 subnets, 4 masks
R 172.20.0.0/22 [120/2] via 172.20.7.253, 00:00:20, Serial0/1/0
R 172.20.4.0/23 [120/1] via 172.20.7.253, 00:00:20, Serial0/1/0
C 172.20.7.192/27 is directly connected, FastEthernet0/0
R 172.20.7.240/30 [120/1] via 172.20.7.253, 00:00:20, Serial0/1/0
R 172.20.7.248/30 [120/1] via 172.20.7.253, 00:00:20, Serial0/1/0
C 172.20.7.252/30 is directly connected, Serial0/1/0
Router#writer
Translating "writer"...domain server (255.255.255.255)
% Unknown command or computer name, or unable to find computer address
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router#wr
Building configuration...
[OK]
Router#
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz

12. 4. SERVIDORES
 MAIL
 DNS
Centro de Informática y Sistemas Computación III Ing. Carlos Rojas Ortiz