INSTITUTO TECNICO DE CAPACITACION Y PRODUCTIVIDAD
DELEGACION DEPARTAMENTAL DE JALAPA
CARRERA:
ADMINISTRADOR DE REDES DE COMPUTADORAS
MODULO:
DISEÑO E IMPLEMENTACIÓN DE REDES DE COMPUTADORAS
FACILITADOR: ING. LUIS OVIDIO MURGA POLANCO
OSPF (Open Shortest Path First)
1. Armamos la siguiente topología de red:
2. Configuración del Router 1711:
 Enable -> show version -> configure terminal -> interface f0/0
 ip address 172.16.0.1 255.255.0.0 -> no shutdown -> exit -> line vty 0 4
 password cisco -> login -> exit -> enable secret cisco -> do wr -> do show run
 router ospf 100 -> network 172.16.0.0 0.0.255.255 area 0 -> [Control]+[Z]
 configure terminal -> hostname 1711 -> do wr
3. Configuración del Router 2801:
 Show version -> enable -> hostname 2801 -> interface f0/1
 Ip address 172.16.0.2 255.255.0.0 -> no shutdown -> exit -> line vty 0 4
 password cisco -> login -> exit -> enable secret cisco -> do wr -> Interface f0/0
 ip address 192.168.100.1 255.255.255.0 -> no shutdown -> exit
 Router ospf 100 -> network 192.168.100.0 0.0.0.255 area 0
 Network 172.16.0.0 0.0.255.255 area 0 –> exit -> wr
4. Configuración del Router 2611:
 Enable -> configure terminal -> hostname 2611xm -> line vty 0 4 -> password cisco
 Login -> exit -> enable secret cisco -> interface f0/0
 ip address 192.168.100.2 255.255.255.0 -> no shutdown -> exit -> router ospf 100
 network 192.168.100.0 0.0.0.255 area 0 -> do wr -> exit -> cdp run -> exit -> wr
5. Hacemos pruebas en cada Router con los siguientes comandos:
 show ip route
 show cdp neighbors
6. Aplicaremos seguridad de encriptación:
 Router 2611xm:
o Enable -> configure terminal -> interface f0/0
o ip ospf message-digest-key 100 md5 cisco -> exit -> router ospf 100
o area 0 authentication message-digest -> [CONTROL]+[Z] -> do wr –> do show ip
route
 Router 2801:
o Enable -> configure terminal -> interface f0/0
o ip ospf message-digest-key 100 md5 cisco -> exit -> router ospf 100
o area 0 authentication message-digest -> [CONTROL]+[Z] -> do wr
o do show ip route
o Enable -> configure terminal -> interface f0/1
o ip ospf message-digest-key 100 md5 cisco -> exit -> router ospf 100
o area 0 authentication message-digest -> [CONTROL]+[Z] -> do wr
o do show ip route
 Router 1711:
o Enable -> configure terminal -> interface f0/0
o ip ospf message-digest-key 100 md5 cisco -> exit -> router ospf 100
o area 0 authentication message-digest -> [CONTROL]+[Z] -> do wr
o do show ip route
7. Modificar la prioridad para elegir el router designado y el router de respaldo:
 Router 2611xm:
o Show ip ospf ne de (para comprobar)
 Router 1711:
o Enable -> configure terminal -> ip ospf priority 2 -> [CONTROL]+[Z] -> wr
o Show ip ospf ne de
o Si no funciona hacemos un RELOAD
 Router 2801:
o RELOAD
 Router 1711:
o Show ip ospf interface f0/0
o Enable -> configure terminal -> interface f0/0 -> ip ospf cost 4 (cambiar costo)
o [CONTROL]+[Z] -> show ip ospf interface f0/0