RUTA FLOTANTE
Una
ruta estática flotante es una ruta de respaldo a una ruta principal,
descubierta ya sea por routing dinámico, o asignado mediante routing estático, dicha
ruta flotante debe configurarse con una distancia administrativa mayor que la
ruta principal.
Objetivos: Desarrollaremos la configuración sobre
el direccionamiento y enrutamiento estático, además mostraremos los cambios que
se hacen al simular una falla en una interface de R-R.
CONFIGURACIÓN
ROUTER R-R
R-R(config)#Interface FastEthernet0/0
R-R(config-if)#ip address 192.168.1.33
255.255.255.224
R-R(config-if)#no shutdown
R-R(config)#Interface FastEthernet1/0
R-R(config-if)#ip address 192.168.1.65
255.255.255.224
R-R(config-if)#no shutdown
R-R(config)#Interface serial2/0
R-R(config-if)#ip address 10.0.0.1
255.255.255.252
R-R(config-if)#no shutdown
R-R(config)#Interface serial3/0
R-R(config-if)#ip address 40.0.0.1
255.255.255.252
R-R(config-if)#no shutdown
R-R(config-if)#exit
R-R(config)# ip route 0.0.0.0 0.0.0.0
10.0.0.2
R-R(config)#ip route 0.0.0.0 0.0.0.0
40.0.0.2 5
MOSTRANDO TABLAS
DE ENRUTAMIENTO SIN DESACTIVAR NINGUNA INTERFACE
R-R#show ip route
Gateway of last resort is 10.0.0.2 to
network 0.0.0.0
10.0.0.0/30 is subnetted, 1 subnets
C
10.0.0.0 is directly connected, Serial2/0
40.0.0.0/30 is subnetted, 1 subnets
C
40.0.0.0 is directly connected, Serial3/0
192.168.1.0/27 is subnetted, 2 subnets
C
192.168.1.32 is directly connected, FastEthernet0/0
C
192.168.1.64 is directly connected, FastEthernet1/0
S* 0.0.0.0/0 [1/0] via 10.0.0.2
DESACTIVANDO
LA INTERFACE SERIAL 2/0 Y MOSTRANDO TABLAS DE ENRUTAMIENTO
R-R(config)#int s2/0
R-R(config-if)#shutdown
%LINK-5-CHANGED: Interface Serial2/0,
changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on
Interface Serial2/0, changed state to down
R-R(config-if)#do show ip route
Gateway of last resort is 40.0.0.2 to
network 0.0.0.0
40.0.0.0/30 is subnetted, 1 subnets
C
40.0.0.0 is directly connected, Serial3/0
192.168.1.0/27 is subnetted, 2 subnets
C
192.168.1.32 is directly connected, FastEthernet0/0
C
192.168.1.64 is directly connected, FastEthernet1/0
S* 0.0.0.0/0 [5/0] via 40.0.0.2
CONFIGURACIÓN
ROUTER R-C
R-C(config)#Interface FastEthernet0/0
R-C(config-if)#ip address 192.168.1.1
255.255.255.224
R-C(config-if)#no shutdown
R-C(config)#Interface serial2/0
R-C(config-if)# ip address 50.0.0.1
255.255.255.252
R-C(config-if)#no shutdown
R-C(config)#Interface serial3/0
R-C(config-if)# ip address 10.0.0.2 255.255.255.252
R-C(config-if)#no shutdown
R-C(config-if)#exit
R-C(config)# ip route 40.0.0.0 255.255.255.252
50.0.0.2
R-C(config)#ip route 192.168.1.32
255.255.255.224 10.0.0.1
R-C(config)#ip route 192.168.1.64
255.255.255.224 10.0.0.1
R-C(config)#ip route 192.168.1.32
255.255.255.224 50.0.0.2 5
R-C(config)#ip route 192.168.1.64
255.255.255.224 50.0.0.2 5
MOSTRANDO TABLAS
DE ENRUTAMIENTO SIN DESACTIVAR NINGUNA INTERFACE
R-C#show ip route
Gateway of last resort is not set
10.0.0.0/30 is subnetted, 1 subnets
C
10.0.0.0 is directly connected, Serial3/0
40.0.0.0/30 is subnetted, 1 subnets
S
40.0.0.0 [1/0] via 50.0.0.2
50.0.0.0/30 is subnetted, 1 subnets
C
50.0.0.0 is directly connected, Serial2/0
192.168.1.0/27 is subnetted, 3 subnets
C
192.168.1.0 is directly connected, FastEthernet0/0
S 192.168.1.32 [1/0] via 10.0.0.1
S 192.168.1.64 [1/0] via 10.0.0.1
MOSTRANDO LA
TABLA DE ENRUTAMIENTO AL DESATIVAR LA INTERFACE SERIAL 2/0 DEL R-R
R-C#show ip route
Gateway of last resort is not set
40.0.0.0/30 is subnetted, 1 subnets
S
40.0.0.0 [1/0] via 50.0.0.2
50.0.0.0/30 is subnetted, 1 subnets
C
50.0.0.0 is directly connected, Serial2/0
192.168.1.0/27 is subnetted, 3 subnets
C
192.168.1.0 is directly connected, FastEthernet0/0
S 192.168.1.32 [5/0] via 50.0.0.2
S 192.168.1.64 [5/0] via 50.0.0.2
CONFIGURACIÓN
ROUTER R-F
R-F(config)#Interface serial2/0
R-F(config-if)#ip address 50.0.0.2
255.255.255.252
R-F(config-if)#no shutdown
R-F(config)#Interface serial3/0
R-F(config-if)#ip address 40.0.0.2
255.255.255.252
R-F(config-if)#no shutdown
R-F(config-if)#exit
R-F(config)#ip route 192.168.1.32
255.255.255.224 40.0.0.1
R-F(config)#ip route 192.168.1.0
255.255.255.224 50.0.0.1
R-F(config)#ip route 192.168.1.64
255.255.255.224 40.0.0.1
MOSTRANDO TABLAS
DE ENRUTAMIENTO (Este router no queda afectado por nada al desactivarse la interface
serial 2/0 de R-R)
R-F#show ip route
Gateway of last resort is not set
40.0.0.0/30 is subnetted, 1 subnets
C
40.0.0.0 is directly connected, Serial3/0
50.0.0.0/30 is subnetted, 1 subnets
C
50.0.0.0 is directly connected, Serial2/0
192.168.1.0/27 is subnetted, 3 subnets
S
192.168.1.0 [1/0] via 50.0.0.1
S 192.168.1.32 [1/0] via 40.0.0.1
S 192.168.1.64 [1/0] via 40.0.0.1
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