Seguridad y Redes

Switch1#delfi
Translating "delfi"...domain server (255.255.255.255)
% Unknown command or computer name, or unable to find computer address
Switch1#

En router nos envía un error ya que trata de resolver el nombre del host a una dirección IP en busca de un servidor DNS. Para desactivar esta función podemos utilizar el comando no ip domain-lookup desde configuración global.

Switch1#conf t
Switch1(config)#no ip domain-lookup
Switch1(config)#end
Switch1#delfi
Translating "delfi"
% Unknown command or computer name, or unable to find computer address
Switch1# 

Crear una tabla de host.

Switch1#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
    S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
2507             Fas 0/4            149           R       2507      Eth 0
Switch1#

Para agregar el router 2507 a la tabla de host de nuestro Switch, utilizaremos el comando ip host desde configuracion global.

Switch1#conf t
Switch1(config)#ip host router2507 192.168.7.7
Switch1(config)#end

Verificamos con un ping.

Switch1#ping router2507
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.7.7, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms
Switch1#

Para mostrar la tabla de hosts, es con el comando show hosts.

Switch1#show hosts
Default domain is not set
Name/address lookup uses static mappings

Host                      Port  Flags      Age Type   Address(es)
router2507                None  (perm, OK)  0   IP    192.168.7.7
Switch1#