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  Title : Password Recovery (ÀÀ±Þ º¹±¸)
2. Password Recovery (ÀÀ±Þ º¹±¸)
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Command log
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¼³¸í) ¶ó¿ìÅÍÀÇ root password¸¦ ÀÒ¾î ¹ö·È°Å³ª ȤÀº routerÀÇ OS°¡ Á¤»óµ¿ÀÛ¸¦ ÇÏÁö ¾ÊÀ» °æ¿ì ÀÀ±Þº¹±¸ mode·Î bootingÇÑ´Ù.
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BOOT LOADER
ÁÖ±â´É)
1. root password recovery/change
2. s/w downloading
booter mode·Î µé¾î°¡±â>
systemÀ» reset(power reset ȤÀº s/w reset ½ÃŲ ÈÄ ctrl-C, ctrl-X¸¦ ¹ø°¥¾Æ°¡¸ç ¹Ýº¹ ÀÔ·ÂÇϸé prompt°¡ BOOT #·Î ¶³¾îÁø´Ù.
¼³¸í) password È®ÀÎ(º¸±â)
¡¡ BOOT#
Interface Ethernet0, changed state to UP
BOOT#
show password
password = router
BOOT#

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¼³¸í) password ¼öÁ¤ (root password¸¦ router¿¡¼­ abcd ·Î ¹Ù²Ü°æ¿ì)
¡¡ BOOT# config
BOOT(config)#
passwd abcd abcd
password changed

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¡Ø Âü°í) OS command¿¡¼­ root password º¯°æ ¸í·É¾î
¡¡ (root passwd¸¦ abcd¿¡¼­ router·Î ¹Ù²Ü °æ¿ì)
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¡¡ router(config)# show user
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Login Name Password User Level Timeout
--------------------------------------------------------------------------------------------------------
root abcd ADMIN 0

router# config
router(config)# user change root abcd router
router(config)# show user

Login Name Password User Level Timeout
--------------------------------------------------------------------------------------------------------
root router ADMIN 0


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¼³¸í) PCȤÀº UNIX system¿¡¼­ ftp¸¦ ÅëÇØ OS¸¦ upgradeÇÑ´Ù.
¡¡ ftp client : 192.71.192.2 (PC)
ftp server: 192.71.192.1 (router)
¼³¸í) router IP setting (ÁÖÀÇ: BOOTER´Â router software¿¡¼­ ¼³Á¤µÈ
¡¡ setting°ªÀ» ÂüÁ¶ÇÏÁö ¾ÊÀ½)
BOOT# config
BOOT(config)#
address 192.71.192.1 255.255.255.192
BOOT(config)# end

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¼³¸í) router setting È®ÀÎ
¡¡ BOOT# show interface
Interface Configuration : ether0.0
IP address : 192.71.192.1 netmask : 255.255.255.192 mtu = 1500
Ethernet Address : 00 02 a4 99 99 01
Ethernet mode : FULL-DUPLEX
Operating speed : 100 Mbps
Line status : FULL DUPLEX
Operation is UP
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¡¡ ÀÌÇÏ OS mode¿¡¼­ÀÇ ftp/tftp¸¦ ÀÌ¿ëÇÑ down loading¹æ¹ý°ú µ¿ÀÏ

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2. Password recovery & log in BOOT Loader with Boot Loader Version 2.2.5.

  • boot loader version 2.0 ÀÌÈÄ version Àº boot login ½Ã¿¡µµ login ID ¹× password ¸¦ ¹°¾î º¸°³ µÇ¾î ÀÖ½À´Ï´Ù.

  • À̶§ root password¸¦ ºÐ½Ç ÇßÀ» °æ¿ì guest account ·Î login À» ÇÒ ¼ö ÀÖ½À´Ï´Ù. À̶§ÀÇ password ¿ª½Ã guest ÀÔ´Ï´Ù.

  • ÁÖÀÇ ÇÏ½Ç Á¡Àº guest account ·Î login ÇÑ ÈÄ password ¸¦ ¹Ù²Ü °æ¿ì ÀåºñÀÇ ¸ðµç ¼³Á¤Àº ÃʱâÈ­ µÇ¾î ¹ö¸®´Ï ½ÅÁßÇÏ°Ô ÇϽñ⠹ٶø´Ï´Ù.

  • guest account account ·Î log in ÈÄ ¼öÁ¤ÇÑ password ´Â ´ÙÀ½ login ½ÃºÎÅÍ root password ·Î Àû¿ë µË´Ï´Ù.

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step command
1 BOOT_login:

Interface Ethernet0, changed state to DOWN

BOOT_login: guest

BOOT_password:

BOOT> config

BOOT(config)> password router router

If you change the password, your configarion will be erased.

Are you sure you want to continue (y/n)? y

Erasing configuration....done

Password change completed !

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