2. Password Recovery
¡¡ |
|
Command log
|
|
¡¡ |
¡¡ |
|
Note) |
If you lost root password or router OS dose not work
normally (OS crashed), you may recovery OS or password under BOOT loader
mode. |
|
¡¡ |
Main function of BOOT LOADER
1. root password recovery/change
2. s/w downloading
Enter Bootloader mode>
After power reset or s/w reset, press ctrl-C and ctrl-X key alternately
repeatedly, then you can see ¡°BOOT#¡± prompt. |
|
Note) |
Check password |
|
¡¡ |
BOOT#
Interface Ethernet0, changed state to UP
BOOT# show password
password = router
BOOT#
¡¡ |
|
Note) |
Change root password (If you want to change from
"router" to "abcd") |
|
¡¡ |
BOOT# config
BOOT(config)#
passwd abcd
abcd
password changed
¡¡ |
|
CF) root password change command under APOS
environment(not BOOT loader)?/b> |
|
¡¡ |
(If you want to change from ¡°router¡± to ¡°abcd¡±)
¡¡ |
|
¡¡ |
router(config)# show user
|
|
¡¡ |
|
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 |
¡¡ |
|
Note) |
Upgrade OS image via ftp/tftp under PC or UNIX
environment. |
|
¡¡ |
ftp client : 192.71.192.2 (PC)
ftp server: 192.71.192.1 (router) |
|
Note) |
router IP setting
(Notice : BOOTER don't
refer configuration value of APOS environment.) |
|
¡¡ |
BOOT#
config
BOOT(config)#
address
192.71.192.1 255.255.255.192
BOOT(config)# end
¡¡ |
|
Note) |
IP address setting confirm |
|
¡¡ |
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 |
|
¡¡ |
¡¡ |
|
¡¡ |
Under APOS mode, application image downloading
procedure is the same as BOOT mode. |
|
¡¡
2. Password recovery & log in
BOOT Loader with Boot Loader Version 2.2.5.
-
with loader 2.0 or
later, you must know APOS root password to login into boot loader
mode.
-
It has changed for
security issue.og. After the login, the all of command is the same
as old version.
-
If you lost root
password, you can login with guest account. the password is "guest"
for this.
-
After the login Log in
as guest,to recovery password, you may move config mode, then change
password.
-
but if you do it, all of
configuration will be erased.
¡¡
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 !
¡¡ |
