En nuestro primer dia como empleado en el area IT de ACME
Inc. debemos solucionar los problemas de networking que el
administrador anterior dejó al irse.
A trabajar que llega el jefe !
On our first day as an employee in the IT area of ACME
Inc. we must solve the problems of networking that the
previous manager left before going.
Let's work the boss is coming !
Fecha: 7 de Mayo del 2011
Ganador: Patricio Maraviglia es el único que me entregó el escenario terminado a la semana.
Los routers están mal configurados (o sin configurar), tenemos el tiempo contado para solucionarlo,
como es normal en nuestra profesión ! de cuanto será el downtime de la red, si llegamos a las 8.00 am
y nos encontramos con esto ??? a trabajar, que a las 9.00 llega el jefe !!! (de mal humor como siempre)
Solución / Troubleshooting: por
Patricio Maraviglia
Para solucionar este escenario, el network admin deberá ver todas las configuraciones, realizar un mapa de la
red y aplicar la lógica para levantar el muerto.
Deberán aplicarse destrezas básicas, de PPP autenticado y de EIGRP.
Las luces de link, la solapa Config, los carteles indicadores de IP y estados de interfaces fueron deshabilitados,
se necesita sólo la CLI, papel, lápiz y paciencia ....
Telecom#sh
runn
!
hostname
Telecom
!
username Cordoba password 0 cisco (como es el centro de la estrella, deberá
username Formosa password 0 cisco tener todos los routers conectados a el)
username Mendoza password 0 cisco
username
Neuquen password 0 cisco
username Rosario password 0 cisco
username Salta password 0 cisco
username San_Juan password 0 cisco
username Tucuman password 0 cisco
!
interface
Serial0/0
description link a mendoza
ip address 172.16.0.14 255.255.255.252
encapsulation ppp
ppp authentication chap
!
interface
Serial1/0
description link a Cordoba
ip address 172.16.0.18 255.255.255.252
encapsulation ppp
ppp authentication chap
!
interface
Serial2/0
description link a Neuquen
ip address 172.16.0.21 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
interface
Serial3/0
description link a Rosario
ip address 172.16.0.26 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
interface
Serial4/0
description link a Tucuman
ip address 172.16.0.10 255.255.255.252
encapsulation ppp
ppp authentication chap
!
interface
Serial5/0
description link a Salta
ip address 172.16.0.1 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
interface
Serial6/0
description link a San_Juan
ip address 172.16.0.6 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
interface
Serial7/0
description link a Formosa
ip address 172.16.0.30 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
network 172.16.0.0 0.0.0.3
network 172.16.0.28 0.0.0.3
network 172.16.0.24 0.0.0.3
network 172.16.0.20 0.0.0.3
network 172.16.0.16 0.0.0.3
network 172.16.0.12 0.0.0.3
network 172.16.0.8 0.0.0.3
network 172.16.0.4 0.0.0.3
auto-summary (puede
llegar a fallar debido a que existen redes
! discontiguas
entre Neuquén - Rio Negro - Chubut)
!
end
Telecom#
ip ro
---resumido---
172.16.0.0/16 is variably subnetted, 11
subnets, 2 masks
C 172.16.0.0/30 is directly connected,
Serial5/0
C 172.16.0.4/30 is directly connected,
Serial6/0
C 172.16.0.8/30 is directly connected,
Serial4/0
C 172.16.0.12/30 is directly connected,
Serial0/0
C 172.16.0.16/30 is directly connected,
Serial1/0
C 172.16.0.17/32 is directly connected,
Serial1/0
C 172.16.0.20/30 is directly connected,
Serial2/0
C 172.16.0.24/30 is directly connected,
Serial3/0
C 172.16.0.28/30 is directly connected,
Serial7/0
D 172.16.0.32/30 [90/2681856] via
172.16.0.22, 00:01:11, Serial2/0
D 172.16.0.36/30 [90/2681856] via
172.16.0.22, 00:01:11, Serial2/0
192.168.0.0/25 is subnetted, 1 subnets
D 192.168.0.0 [90/2172416] via
172.16.0.25, 00:01:11, Serial3/0
D 192.168.1.0/24 [90/2172416] via
172.16.0.2, 00:01:11, Serial5/0
D 192.168.2.0/24 [90/2172416] via
172.16.0.5, 00:01:11, Serial6/0
D 192.168.3.0/24 [90/2172416] via
172.16.0.9, 00:01:11, Serial4/0
D 192.168.4.0/24 [90/2172416] via
172.16.0.13, 00:01:11, Serial0/0
D 192.168.5.0/24 [90/2172416] via
172.16.0.17, 00:01:11, Serial1/0
192.168.6.0/25 is subnetted, 2 subnets
D 192.168.6.0 [90/2684416] via
172.16.0.22, 00:01:10, Serial2/0
D 192.168.6.128 [90/2684416] via
172.16.0.22, 00:01:10, Serial2/0
D 192.168.7.0/24 [90/2172416] via
172.16.0.29, 00:01:12, Serial7/0
Telecom#
!
hostname
Formosa
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.7.1 255.255.255.0
!
interface
Serial0/0/1
ip address 172.16.0.29 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
router
eigrp 100
network 192.168.7.0
network 172.16.0.28 0.0.0.3
no auto-summary
!
end
!
hostname
Rosario
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.0.1 255.255.255.128
!
interface
Serial0/0/1
ip address 172.16.0.25 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
network 192.168.0.0 0.0.0.127
network 172.16.0.24 0.0.0.3
no auto-summary
!
end
!
hostname
Neuquen
!
username
Chubut password 0 cisco
username
Rio_Negro password 0 cisco
username
Telecom password 0 cisco
!
interface
Serial0/0/0
ip address 172.16.0.37 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
interface
Serial0/0/1
ip address 172.16.0.22 255.255.255.252
encapsulation ppp
ppp authentication chap
!
interface
Serial0/1/0
ip address 172.16.0.34 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
network 172.16.0.20 0.0.0.3
network 172.16.0.32 0.0.0.3
network 172.16.0.36 0.0.0.3
no auto-summary
!
end
!
hostname
Chubut
!
username
Neuquen password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.6.129 255.255.255.128
!
interface
Serial0/0/0
ip address 172.16.0.33 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
router
eigrp 100
network 172.16.0.32 0.0.0.3
network 192.168.6.128 0.0.0.127
no auto-summary
!
end
!
hostname
Rio_Negro
!
username
Neuquen password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.6.1 255.255.255.128
!
interface
Serial0/0/0
ip address 172.16.0.38 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
network 172.16.0.36 0.0.0.3
network 192.168.6.0 0.0.0.127
no auto-summary
!
end
!
hostname
Cordoba
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.5.1 255.255.255.0
!
interface
Serial0/0/0
ip address 172.16.0.17 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
router
eigrp 100
network 172.16.0.16 0.0.0.3
network 192.168.5.0
no auto-summary
!
end
!
hostname
Mendoza
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.4.1 255.255.255.0
!
interface
Serial0/0/0
ip address 172.16.0.13 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
router
eigrp 100
network 172.16.0.12 0.0.0.3
network 192.168.4.0
no auto-summary
!
end
!
hostname
Tucuman
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.3.1 255.255.255.0
!
interface
Serial0/0/0
ip address 172.16.0.9 255.255.255.252
encapsulation ppp
ppp authentication chap
clock rate 64000
!
router
eigrp 100
network 192.168.3.0
network 172.16.0.8 0.0.0.3
no auto-summary
!
end
!
hostname
San_Juan
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.2.1 255.255.255.0
!
interface
Serial0/0/0
ip address 172.16.0.5 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
passive-interface FastEthernet0/0
network 192.168.2.0
network 172.16.0.4 0.0.0.3
no auto-summary
!
end
!
hostname
Salta
!
username Telecom password 0 cisco
!
interface
FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
!
interface
Serial0/0/0
ip address 172.16.0.2 255.255.255.252
encapsulation ppp
ppp authentication chap
!
router
eigrp 100
network 192.168.1.0
network 172.16.0.0 0.0.0.3
no auto-summary
!
end
(2011)
Tales for lazy afternoons with funny girls
Rosario, Argentina