11.1.6.3

Tarea 1: Examen de los comandos show en un router

Paso 1. Examinar los comandos show en el modo EXEC de usuario.

Haga clic en el router R2-Central. Se abre la ventana de configuración del router. Haga clic en la ficha CLI y presione Intro. Aparece la petición de entrada del modo EXEC del usuario. Ingrese el comando show ? para ver los comandos show disponibles.

arp Arp table
cdp CDP information
class-map Show QoS Class Map
clock Display the system clock
controllers Interface controllers status
crypto Encryption module
dot11 IEEE 802.11 show information
flash: display information about flash: file system
frame-relay Frame-Relay information
history Display the session command history
hosts IP domain-name, lookup style, nameservers, and host table
interfaces Interface status and configuration
ip IP information
policy-map Show QoS Policy Map
privilege Show current privilege level
protocols Active network routing protocols
queue Show queue contents
queueing Show queueing configuration
sessions Information about Telnet connections
ssh Status of SSH server connections
tcp Status of TCP connections
terminal Display terminal configuration parameters

Ejecute el comando show interfaces y observe el resultado. Ejecute el comando show interfaces serial 0/0/0 y observe el resultado.

show interfaces.

FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0006.2aed.9e42 (bia 0006.2aed.9e42)
Internet address is 172.16.255.254/16
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier


Ejecute el comando show version y observe el resultado.

R2-Central>show version
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.3(14)T7, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 15-May-06 14:54 by pt_team

ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)

System returned to ROM by power-on
System image file is "flash:c1841-ipbase-mz.123-14.T7.bin"


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

Ejecute el comando show ip interface y observe el resultado. Ejecute el comando show ip interface serial0/0/0 y observe el resultado. Ejecute el comando show ip interface brief y observe el resultado.



R2-Central>show ip interface serial0/0/0
Serial0/0/0 is up, line protocol is up (connected)
Internet address is 10.10.10.5/30
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is disabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP Fast switching turbo vector
IP multicast fast switching is disabled
IP multicast distributed fast switching is disabled
Router Discovery is disabled

R2-Central>show ip interface brief
Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.255.254 YES manual up up

FastEthernet0/1 unassigned YES unset administratively down down

Serial0/0/0 10.10.10.5 YES manual up up

Serial0/0/1 unassigned YES unset down down

Vlan1 unassigned YES unset administratively down down

Ejecute el comando show arp. El parámetro arp no es reconocido debido a que este comando show no está disponible en el modo EXEC de usuario.

R2-Central>show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.255.254 - 0006.2AED.9E42 ARPA FastEthernet0/0

Paso 2. Examine los comandos show en el modo EXEC privilegiado.

Ingrese el comando enable para ingresar al modo EXEC privilegiado. Aparece la petición de entrada del modo EXEC privilegiado. Ingrese el comando show ? para ver los comandos show disponibles.

R2-Central#show ?
aaa Show AAA values
access-lists List access lists
arp Arp table
cdp CDP information
class-map Show QoS Class Map
clock Display the system clock
controllers Interface controllers status
crypto Encryption module
debugging State of each debugging option
dhcp Dynamic Host Configuration Protocol status
dot11 IEEE 802.11 show information
file Show filesystem information
flash: display information about flash: file system
frame-relay Frame-Relay information
history Display the session command history
hosts IP domain-name, lookup style, nameservers, and host table
interfaces Interface status and configuration
ip IP information
logging Show the contents of logging buffers
login Display Secure Login Configurations and State
mac-address-table MAC forwarding table
ntp Network time protocol

Ejecute el comando show arp y observe el resultado. Haga clic PC 1A. Se abre la ventana de configuración de la PC. Haga clic en la ficha Escritorio. Haga clic en el botón Símbolo del sistema. Se abre una ventana de petición de entrada de comandos. Escriba ping 192.168.254.254 (la dirección IP del Eagle Server) y presione Intro. Repita el comando ping en PC 1B. Ejecute nuevamente el comando show arp y observe el resultado.

Avans de fer ping

R2-Central#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.255.254 - 0006.2AED.9E42 ARPA FastEthernet0/0

Despres de fer ping

R2-Central#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.1.1 1 0001.6465.8B74 ARPA FastEthernet0/0
Internet 172.16.1.2 0 0007.EC78.7D6B ARPA FastEthernet0/0
Internet 172.16.255.254 - 0006.2AED.9E42 ARPA FastEthernet0/0

Ejecute el comando show startup-config y observe el resultado.

R2-Central#show startup-config
Using 665 bytes
!
version 12.3
no service password-encryption
!
hostname R2-Central
!
!
!
!
interface FastEthernet0/0
ip address 172.16.255.254 255.255.0.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
ip address 10.10.10.5 255.255.255.252
!
interface Serial0/0/1
no ip address
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.10.10.6
!
!
ip dhcp excluded-address 172.16.1.0 172.16.255.254
!
ip dhcp pool Central
network 172.16.0.0 255.255.0.0
default-router 172.16.255.254
dns-server 192.168.254.254
!
no cdp run
!
line con 0
line vty 0 4
login
!
!
end

Tarea 2: Conectar los dispositivos

Paso 1. Use el tipo de medio adecuado entre los dispositivos.

Esta topología de práctica de laboratorio ya ha sido configurada, por lo que debe continuar al Paso 2.

Paso 2. Examine los comandos show únicos del switch

Ejecute el comando show mac-address-table y observe el resulta

R2-Central#show mac-address-table
Mac Address Table
-------------------------------------------

Vlan Mac Address Type Ports
---- ----------- -------- -----