C800-IOS-Restore

Восстановление IOS на Cisco 871

Это заметка что бы не забыть

Предистория

после команды

gw#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
gw#
*Nov 21 21:33:35.362: %SYS-7-NV_BLOCK_INIT: Initialized the geometry of nvram
gw#reload

ЖЕлезка окирпичилась и не грузится, рушается на флеш

Filesystem "flash:" not checked -- I/O error
rommon 10 >
System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.

C870 series (Board ID: 3-148) platform with 196608 Kbytes of main memory

flashfs[0]: Checking block 1...bad block number (31551)
flashfs[0]: erasing block 1...done.
flashfs[0]: Checking block 3...bad block number (31551)
flashfs[0]: erasing block 3...done.

Решение

С USB грузится не вышло (похоже огрангичение платформы)

format

Формат помог решить проблему с флешем - после форматирования стал доступен

rommon 2 >  format flash:
Are you sure you want to format "flash:" (all data will be lost) (y/n)?y
Formatting filesystem, please wait 120 seconds
Filesystem "flash:" formatted
rommon 3 > dir

List of filesystems currently registered:

               flash[0]: (read-write)

rommon 4 >

Загрузка IOS из rommon

• Важно: кабель включить в 1 порт (Fa0)
• Выставить переменые

TFTP_FILE=c870-advipservicesk9-mz.124-24.T5.bin
IP_ADDRESS=192.168.22.22
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=192.168.22.1
TFTP_SERVER=192.168.1.223
TFTP_CHECKSUM=0

Запустить загррузку - tftpdnld

rommon 19 > tftpdnld

          IP_ADDRESS: 192.168.22.22
      IP_SUBNET_MASK: 255.255.255.0
     DEFAULT_GATEWAY: 192.168.22.1
         TFTP_SERVER: 192.168.1.223
           TFTP_FILE: c870-advipservicesk9-mz.124-24.T5.bin
Do you wish to continue? y/n:  [n]:  y

Performing tftpdnld over Fast Enet.
Initializing interface.
Interface link state up.
ARPing for 192.168.22.1
ARP reply for 192.168.22.1 received.  MAC address 00:02:2d:11:22:33
Receiving c870-advipservicesk9-mz.124-24.T5.bin from 192.168.1.223 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
File reception completed.
Writing flash:/c870-advipservicesk9-mz.124-24.T5.bin
Write operation will take approximately 133 to 400 seconds

rommon 21 > dir flash:
Directory of flash:/

2    -rwx  21877504  <date>               c870-advipservicesk9-mz.124-24.T5.bin

5728256 bytes available (21882880 bytes used)

rommon 22 > boot flash:/c870-advipservicesk9-mz.124-24.T5.bin
Booting flash:/c870-advipservicesk9-mz.124-24.T5.bin
Self decompressing the image : ########################################################################################## [OK]