Administracion de Routers

8/12/2019 Administracion de Routers

1/8

Copias de respaldo de la configuracin del Router

1) Haciendo copias de la configuracin del router ABC al Servidor TFTP Server

2) Haciendo copia desde el servidor TFTP Server con IP 192.168.2.36 donde el archivoorigen es abc-confg, directamente a la NVRAM

3) Haciendo copia desde el servidor TFTP Server con IP 192.168.2.36 donde el archivoorigen es abc-confg, directamente a la RAM

ABC#copy tftp://192.168.2.36/abc-confg startup-config

Destination filename [startup-config]?Accessing tftp://192.168.2.36/abc-confg...

Loading abc-confg from 192.168.2.36 (via FastEthernet0/0): !

[OK - 1115 bytes]

[OK]

1115 es copied in 12.356 secs (90 bytes/sec)

ABC#copy startup-config tftp:

Address or name of remote host []? 192.168.2.36

Destination filename [abc-confg]? abc-confg!!

1115 bytes copied in 0.064 secs (17422 bytes/sec)


2/8

4) Nuestro router es un Cisco 1841

ABC#copy tftp://192.168.2.36/abc-confg running-config

Destination filename [running-config]?

Accessing tftp://192.168.2.36/abc-confg...

Loading abc-confg from 192.168.2.36 (via FastEthernet0/0): !

[OK - 1115 bytes]


ABC#

*Aug 11 02:17:54.043: %SYS-5-CONFIG_I: Configured from tftp://192.168.2.36/abc-confg by

console

ABC#show version

Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(24)T6, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2011 by Cisco Systems, Inc.Compiled Tue 23-Aug-11 00:41 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

ABC uptime is 1 hour, 27 minutes

System returned to ROM by power-on

System image file is "flash:c1841-adventerprisek9-mz.124-24.T6.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

If you require further assistance please contact us by sending email to

[email protected].

Cisco 1841 (revision 7.0) with 238592K/23552Kbytes of memory.

Processor board ID FTX144500DK

2 FastEthernet interfaces

2 Low-speed serial(sync/async) interfaces

2 Virtual Private Network (VPN) Modules

DRAM configuration is 64 bits wide with parity disabled.

191K bytes of NVRAM.

62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102


3/8

5) Mostramos la estructura de directorio del sistema, donde la ubicacin de la CLI esindicada por el *, y lo puede confirmar con PWD.

6) Mostramos el contenido de la flash

7)

Hacemos copia de la imagen al servidor TFTP

ABC#show file systems

File Systems:

Size(b) Free(b) Type Flags Prefixes- - opaque rw archive:

- - opaque rw system:

- - opaque rw tmpsys:

- - opaque rw null:

- - network rw tftp:

196600 185207 nvram rw nvram:

* 64000000 23470080 disk rw flash:#

- - opaque wo syslog:

- - opaque rw xmodem:

- - opaque rw ymodem:- - network rw rcp:

- - network rw pram:

- - network rw http:

- - network rw ftp:

- - network rw scp:

- - opaque ro tar:

- - network rw https:

- - opaque ro cns:

ABC#dir flash:

Directory of flash:/

1 -rw- 40523476 Feb 23 2013 02:59:58 +00:00 c1841-adventerprisek9-mz.124-24.T6.bin

64000000 bytes total (23474176 bytes free)

ABC#copy flash: tftp:

Source filename []? c1841-adventerprisek9-mz.124-24.T6.bin

Address or name of remote host []? 192.168.2.36

Destination filename [c1841-adventerprisek9-mz.124-24.T6.bin]?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



4/8

8) No olvidar que dicha FLASH en este modelo es extrable y en formato FAT32

9) Volvemos a insertarlo:

10)Debido a que ya tenemos copias de respaldo de la imagen o IOS y de laconfiguracin, podemos eliminar el contenido de la NVRAM y de la FLASH.

11)Podemos reiniciar el router con reloady veremos que se inicia en modo ROMMonitor ya que no existe imagen. Desde ah usamos la herramienta de lnea de

comando TFTPDNLD de ayuda en este modo.

ABC#

*Aug 11 03:08:56.995: %FILESYS-5-CF: External CompactFlash removed

ABC#

Flash card inserted in flash. Reading filesystem on the device...

Wait for the completion message before accessing device

Filesystem read completed in flash.

Device in flash available for use

*Aug 11 03:09:23.023: %FILESYS-5-CF: External CompactFlash inserted

ABC#delete nvram:startup-config

Delete filename [startup-config]?

Delete nvram:startup-config? [confirm]

[OK]

ABC#

ABC#delete flash:/c1841-adventerprisek9-mz.124-24.T6.bin

Delete filename [c1841-adventerprisek9-mz.124-24.T6.bin]?

Delete flash:/c1841-adventerprisek9-mz.124-24.T6.bin? [confirm]

ABC#


5/8

ABC#reload

Proceed with reload? [confirm]

*Aug 11 03:21:12.619: %SYS-5-RELOAD: Reload requested by admin on console. Reload Reason: Reload

Command.System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)


Copyright (c) 2006 by cisco Systems, Inc.

PLD version 0x10

GIO ASIC version 0x127

c1841 platform with 262144 Kbytes of main memory

Main memory is configured to 64 bit mode with parity disabled

Readonly ROMMON initialized

program load complete, entry point: 0x8000f000, size: 0xcb80boot: cannot determine first executable file name on device "flash:"

System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)



PLD version 0x10





program load complete, entry point: 0x8000f000, size: 0xcb80

boot: cannot determine first executable file name on device "flash:"




PLD version 0x10


c1841 platform with 262144 Kbytes of main memoryMain memory is configured to 64 bit mode with parity disabled


rommon 1 >


6/8

12)Mostramos la salida del comando tftpdnld desde ROMMON, y no preparamospara establecer las variables requeridas que se activaran sobre la primera interface

LAN del router para obtener acceso a la red y asi comunicarse con el Servidor TFTP

y descargar el archivo previamente establecido. (no olvidar incluir la extensin

.bin)

13)Establecemos las variables

rommon 2 > tftpdnld

Missing or illegal ip address for variable IP_ADDRESS

Illegal IP address.

usage: tftpdnld [-hr]

Use this command for disaster recovery only to recover an image via TFTP.

Monitor variables are used to set up parameters for the transfer.

(Syntax: "VARIABLE_NAME=value" and use "set" to show current variables.)

"ctrl-c" or "break" stops the transfer before flash erase begins.

The following variables are REQUIRED to be set for tftpdnld:

IP_ADDRESS: The IP address for this unit

IP_SUBNET_MASK: The subnet mask for this unit

DEFAULT_GATEWAY: The default gateway for this unit

TFTP_SERVER: The IP address of the server to fetch from

TFTP_FILE: The filename to fetch

The following variables are OPTIONAL:

TFTP_VERBOSE: Print setting. 0=quiet, 1=progress(default), 2=verbose

TFTP_RETRY_COUNT: Retry count for ARP and TFTP (default=18)

TFTP_TIMEOUT: Overall timeout of operation in seconds (default=7200)

TFTP_CHECKSUM: Perform checksum test on image, 0=no, 1=yes (default=1)

FE_PORT: 0= (default), 1

FE_SPEED_MODE: 0=10/hdx, 1=10/fdx, 2=100/hdx, 3=100/fdx,

4=Auto (default)

TFTP_DESTINATION: The flash destination device for the file

flash:(default), usbflash0:

Command line options:

-h: this help screen

-r: do not write flash, load to DRAM only and launch image

rommon 3 > IP_ADDRESS=192.168.2.35

rommon 4 > IP_SUBNET_MASK=255.255.255.224

rommon 5 > DEFAULT_GATEWAY=192.168.2.33

rommon 6 > TFTP_SERVER=192.168.2.36

rommon 7 > TFTP_FILE=c1841-adventerprisek9-mz.124-24.T6.bin


7/8

14)Procedemos a ejecutar la descarga

15)Si los datos estn correctos, el Servidor TFTP est activo en la red y las conexionesdel primer puerto LAN del router y el Servidor estn cableadas le damos y, y

comenzara la descarga.

rommon 13 > tftpdnld

IP_ADDRESS: 192.168.2.35

IP_SUBNET_MASK: 255.255.255.224

DEFAULT_GATEWAY: 192.168.2.33

TFTP_SERVER: 192.168.2.36

TFTP_FILE: c1841-adventerprisek9-mz.124-24.T6.bin

TFTP_MACADDR: 6c:50:4d:25:1f:68

TFTP_VERBOSE: Progress

TFTP_RETRY_COUNT: 18

TFTP_TIMEOUT: 7200

TFTP_CHECKSUM: Yes

FE_PORT: 0

FE_SPEED_MODE: Auto Detect

Invoke this command for disaster recovery only.

WARNING: all existing data in all partitions on flash: will be lost!

Do you wish to continue? y/n: [n]: y

Receiving c1841-adventerprisek9-mz.124-24.T6.bin from 192.168.2.36

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

continua !!!!!!!!!!!!!!!!!!!!!!!!!

File reception completed.

Validating checksum.

Copying file c1841-adventerprisek9-mz.124-24.T6.bin to flash:.


Format: Drive communication & 1st Sector Write OK...

Writing Monlib sectors.

.......................................................................................................

Monlib write complete

Format: All system sectors written. OK...

Format: Operation completed successfully.

Format of flash: complete



8/8

16)Aplicamos reset , para reiniciar conla nueva imagen

17)Tambien podemos verificar el envio

OK!!!

rommon 14 > reset




PLD version 0x10







program load complete, entry point: 0x8000f000, size: 0x26a5534

Self decompressing the image :

##########################################################################################

##########################################################################################

############################ [OK]

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Administracion de Routers