1-Laboratoriya ishi Guruh: 713-20 Bajardi: Abduhamidjonov Lochin Tekshirdi: Shukurov Orziqul

Cisco marshrutizatorlarida parolni tashlab yuborish
Cisco marshrutizatorlarida parolni tashlab yuborish uchun qurilmaga fizik kira olish kerak, ya’ni konsol kabel orqali ulanish imkoniyati bo’lishi kerak. Marshrutizatorda konfiguratsion registr mavjud bo’lib, ushbu registr marshrutizatorning ishga tushishini boshqaradi va uning qiymatlari energiya talab qiluvchi xotirada saqlanadi.
Configuration register – bu marshrutizatorning ishga tushishi ketma-ketligiga javob beruvchi NVRAM da joylashgan 16 bitli registr. Ya’ni marshrutizatorga operatsion tizimni va sozlanish fayllarini qaysi tartibda va qayerdan olishini ko’rsatib beradi. Uning odatiy qiymati – 2102. Qiymatning uchinchi raqami sozlanish fayliga, to’rtinchi raqami esa operatsion tizimga javob beradi. Parollar unitilishi yoki yo’qolishi holatlarida uchinchi raqamni “4” raqamga o’zgartirish kerak bo’ladi.
Ko’pchilik marshrutizatorlarda konfiguratsion registrning qiymati – 0x2102 bo’ladi.
Agar Cisco marshrutizatoriga kirish huquqi bor bo’lsa, unda konfiguratsion registrning qiymatini quyidagicha tekshirsa bo’ladi:

Switch>enable

Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname Lochin
Lochin(config)#line consol 0
Lochin(config-line)#password cisco
Lochin(config-line)#login
Lochin(config-line)#exit
Lochin(config)#enable secret cisco1
Lochin(config)#banner motd "kirish taqiqlanadi"
Lochin(config)#service password-encryption
Lochin(config)#int vlan 1
Lochin(config-if)#ip address 192.168.1.254 255.255.255.0
Lochin(config-if)#no sh
Lochin(config-if)#
%LINK-5-CHANGED: Interface Vlan1, changed state to up
Lochin(config-if)#exit
Lochin(config)#do wr
Loading "flash:/c2960-lanbase-mz.122-25.FX.bin"...
#############################
Boot process terminated.
switch:
switch: flash_init
Initializing Flash...
flashfs[0]: 3 files, 0 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 64016384
flashfs[0]: Bytes used: 3059643
flashfs[0]: Bytes available: 60956741
flashfs[0]: flashfs fsck took 1 seconds.
switch: dir flash:
Directory of flash:/
1 -rw- 3058048 c2950-i6q4l2-mz.121-22.EA4.bin
3 -rw- 979 config.text
2 -rw- 616 vlan.dat
60956741 bytes available (3059643 bytes used)
switch: rename flash:config.text flash:config.old
switch: dir flash:
Directory of flash:/
1 -rw- 3058048 c2950-i6q4l2-mz.121-22.EA4.bin
3 -rw- 979 config.old
2 -rw- 616 vlan.dat
60956741 bytes available (3059643 bytes used)