Escenario de pruebas de
redistribución de la ruta por defecto en distintos protocolos de enrutamiento
Fecha: Diciembre 2012
El escenario comprende de un router de borde con una
ruta por defecto (o quad zero) y esta es redistribuida por EIGRP,
luego por OSPF y luego por RIP, utilizando las
distintas opciones que presenta cada protocolo.
Verificación del escenario terminado:
Gateway#sh 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
200.0.0.1 to network 0.0.0.0
10.0.0.0/30 is subnetted, 1 subnets
C 10.0.0.0 is directly connected,
Serial0/0/0
S 192.168.0.0/22 [1/0] via 10.0.0.2
C 200.0.0.0/24 is directly connected,
FastEthernet0/0
S* 0.0.0.0/0 [1/0] via 200.0.0.1 (ruta por defecto)
Gateway#
Router1#sh 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
10.0.0.1 to network 0.0.0.0
10.0.0.0/30 is subnetted, 1 subnets
C 10.0.0.0 is directly connected,
Serial0/0/0
D EX 192.168.0.0/22
[170/7289856] via 10.0.0.1, 00:04:58, Serial0/0/0
C 192.168.0.0/24 is directly connected,
FastEthernet0/0
C 192.168.1.0/24 is directly connected,
FastEthernet0/1
O 192.168.2.0/24 [110/2] via 192.168.0.2,
00:10:50, FastEthernet0/0
S 192.168.3.0/24 [1/0] via 192.168.0.2
D*EX 0.0.0.0/0
[170/2195456] via 10.0.0.1, 00:14:21, Serial0/0/0 (ruta
por defecto, ver AD 170 y no 90)
Router1#
Router2#sh 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
192.168.0.1 to network 0.0.0.0
C 192.168.0.0/24 is directly connected,
FastEthernet0/0
O 192.168.1.0/24 [110/2] via 192.168.0.1,
00:13:54, FastEthernet0/0
C 192.168.2.0/24 is directly connected,
FastEthernet0/1
R 192.168.3.0/24 [120/1] via 192.168.2.2,
00:00:04, FastEthernet0/1
O*E2 0.0.0.0/0 [110/1] via
192.168.0.1, 00:13:54, FastEthernet0/0(ruta por
defecto OSPF type-2)
Router2#
Router3#sh 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
192.168.2.1 to network 0.0.0.0
R 192.168.0.0/24 [120/1] via 192.168.2.1,
00:00:23, FastEthernet0/1
R 192.168.1.0/24 [120/1] via 192.168.2.1,
00:00:23, FastEthernet0/1
C 192.168.2.0/24 is directly connected,
FastEthernet0/1
C 192.168.3.0/24 is directly connected,
FastEthernet0/0
R* 0.0.0.0/0 [120/1] via 192.168.2.1,
00:00:23, FastEthernet0/1 (ruta por defecto)
Router3#
PC>ipconfig
IP
Address......................: 192.168.3.123
Subnet
Mask.....................: 255.255.255.0
Default Gateway.................:
192.168.3.1
PC>tracert 200.0.0.1
Tracing route to 200.0.0.1
over a maximum of 30 hops:
1 31 ms 31 ms
32 ms 192.168.3.1 (Router3)
2 31 ms 31 ms
63 ms 192.168.2.1 (Router2)
3 94 ms 78 ms
78 ms 192.168.0.1 (Router1)
4 110 ms 109 ms
125 ms 10.0.0.1 (Gateway)
5 156 ms 156 ms
141 ms 200.0.0.1
Trace complete.
PC>
Configuraciones relevantes:
Gateway#sh runn
Building configuration...
Current configuration :
896 bytes
!
!
hostname Gateway
!
interface FastEthernet0/0
ip address 200.0.0.2 255.255.255.0
!
interface Serial0/0/0
ip address 10.0.0.1 255.255.255.252
!
!
router eigrp 100
redistribute static (redistrubuye ruta
estatíca por defecto)
network 10.0.0.0 0.0.0.3 (segmento en
común con Router1)
auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0
200.0.0.1 (ruta por defecto)
ip route 192.168.0.0
255.255.252.0 10.0.0.2 (ruta sumarizada para alcanzar las redes internas)
!
end
Gateway#
Router1#sh runn
Building configuration...
Current configuration :
919 bytes
!
!
hostname Router1
!
interface FastEthernet0/0
ip address 192.168.0.1 255.255.255.0
!
interface FastEthernet0/1
ip address 192.168.1.1 255.255.255.0
!
interface Serial0/0/0
ip address 10.0.0.2 255.255.255.252
clock rate 2000000
!
!
router eigrp 100
network 10.0.0.0 0.0.0.3 (segmento en
común con Gateway)
auto-summary
!
router ospf 1
log-adjacency-changes
redistribute eigrp 100
network 192.168.0.0 0.0.0.255 area 0 (segmento
en común con Router2)
network 192.168.1.0 0.0.0.255 area 0
default-information originate (redistribuye
ruta por defecto)
!
ip classless
ip route 192.168.3.0
255.255.255.0 192.168.0.2
!
end
Router1#
Router2#sh runn
Building configuration...
Current configuration :
681 bytes
!
hostname Router2
!
interface FastEthernet0/0
ip address 192.168.0.2 255.255.255.0
!
interface FastEthernet0/1
ip address 192.168.2.1 255.255.255.0
!
router ospf 1
log-adjacency-changes
network 192.168.0.0 0.0.0.255 area 0 (segmento
en común con Router1)
!
router rip
redistribute ospf 1 metric 1 (redistribuye
rutas OSPF con métrica 1 -las Tipo 2- )
network 192.168.2.0 (segmento en común
con Router3)
!
ip classless
!
end
Router2#
Router3#sh runn
Building configuration...
Current configuration :
728 bytes
!
hostname Router3
!
interface FastEthernet0/0
ip address 192.168.3.1 255.255.255.0
!
interface FastEthernet0/1
ip address 192.168.2.2 255.255.255.0
!
router rip
passive-interface FastEthernet0/0 (no
existen routers detrás de esta interfaz)
network 192.168.2.0 (segmento en común
con Router2)
network 192.168.3.0
!
ip classless
!
end
Router3#
(2012) Networking
for lonely minds
Rosario, Argentina