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Nexus 9000시리즈는 os 부팅할때 Ctrl+] 를 누른다 

1. switch(boot)# conf t
   switch(boot)(config)# admin-password < 새로운 패스워드(대문자,소문자,숫자 섞어서 8자 이상) >
   switch(boot)(config)# exit

2. switch(boot)#dir bootflash:
   switch(boot)#load bootflash:n7000-s2-dk9.6.2.20.bin  [1번의 이미지 버전과 같은 걸로]

부팅 후 컨피그 초기화
wr er
reload

Abort Auto Provisioning and continue with normal setup ?(yes/no)[n]: yes
전원 켜기 자동 프로비저닝을 중단하고 일반 설정을 계속하시겠습니까?(예/아니요) 예

         ---- System Admin Account Setup ----
Do you want to enforce secure password standard (yes/no) [y]: no
보안 비밀번호 표준을 시행하시겠습니까 (예/아니요) 아니요
  Enter the password for "admin":   cisco
  Confirm the password for "admin":  cisco
  Do you want to enable admin vdc (yes/no) [n]: no

         ---- Basic System Configuration Dialog VDC: 1 ----
This setup utility will guide you through the basic configuration of
the system. Setup configures only enough connectivity for management
of the system.

Please register Cisco Nexus7000 Family devices promptly with your
supplier. Failure to register may affect response times for initial
service calls. Nexus7000 devices must be registered to receive
entitled support services.

Press Enter at anytime to skip a dialog. Use ctrl-c at anytime
to skip the remaining dialogs.

Would you like to enter the basic configuration dialog (yes/no):  Ctrl+c
Exiting the basic config setup.

login: admin
password: cisco

switch# copy running-config startup-config

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.............................. <= 이거 나올때 Ctrl+c  를 누른다

스피드 변경 방법
serial --speed=9600

1. boot bootflash:n7000-s2-kickstart.6.2.20.bin [하게 되면 재부팅,이미지 버전 주의]

2. switch(boot)# conf t
   switch(boot)(config)# admin-password < 새로운 패스워드(대문자,소문자,숫자 섞어서 8자 이상) >
   switch(boot)(config)# exit

3. switch(boot)#dir bootflash:
   switch(boot)#load bootflash:n7000-s2-dk9.6.2.20.bin  [1번의 이미지 버전과 같은 걸로]

부팅 후 컨피그 초기화
wr er
reload

Abort Auto Provisioning and continue with normal setup ?(yes/no)[n]: yes
전원 켜기 자동 프로비저닝을 중단하고 일반 설정을 계속하시겠습니까?(예/아니요) 예

         ---- System Admin Account Setup ----
Do you want to enforce secure password standard (yes/no) [y]: no
보안 비밀번호 표준을 시행하시겠습니까 (예/아니요) 아니요
  Enter the password for "admin":   cisco
  Confirm the password for "admin":  cisco
  Do you want to enable admin vdc (yes/no) [n]: no

         ---- Basic System Configuration Dialog VDC: 1 ----
This setup utility will guide you through the basic configuration of
the system. Setup configures only enough connectivity for management
of the system.

Please register Cisco Nexus7000 Family devices promptly with your
supplier. Failure to register may affect response times for initial
service calls. Nexus7000 devices must be registered to receive
entitled support services.

Press Enter at anytime to skip a dialog. Use ctrl-c at anytime
to skip the remaining dialogs.

Would you like to enter the basic configuration dialog (yes/no):  Ctrl+c
Exiting the basic config setup.

login: admin
password: cisco

switch# copy running-config startup-config
spanning-tree port type edge default    포트 패스트
feature interface-vlan   vlan 활성화
service unsupported-transceiver   <= 서드파티벤더 GBIC 사용 명령
 
interface ethernet 3/1-48
sw
no sh
exit

 interface Ethernet4/1-48
sw
no sh
exit

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 n5k 장비 기준 보통 Nexus 장비는 OS가 2가지를 가지고 있음 (Kickstart / UK)

부팅시 ctrl+shift+r
loader> dir
여러가지가 나오지만 밑의 두개가 중요
n5000-uk9.5.0.2.N1.1.bin
n5000-uk9-kickstart.5.0.2.N1.1.bin           <= 킥스타터 
loader> boot n5000-uk9-kickstart.5.0.2.N1.1.bin    <= 킥스타터로 부팅
switch(boot)(config)# admin-password [변경할 패스워드] 
switch(boot)# dir
여러가지가 나오지만 밑의 두개가 중요
n5000-uk9.5.0.2.N1.1.bin               <= 일반 OS
n5000-uk9-kickstart.5.0.2.N1.1.bin 
switch(boot)# load n5000-uk9.5.0.2.N1.1.bin       <= 일반 OS로 부팅

login: admin
password: cisco

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1. 부팅시 Ctrl+C 로 ROMMON 진입

2. 
rommon 1 > confreg
 Configuration Summary : 
 => load ROM after netboot fails
 => console baud: 9600
 => autoboot from: commands specified in 'BOOT' environment variable
 do you wish to change the configuration? y/n  [n]:  y
 enable  "diagnostic mode"? y/n  [n]:  n
 enable  "use net in IP bcast address"? y/n  [n]:  n
 disable "load ROM after netboot fails"? y/n  [n]:  n
 enable  "use all zero broadcast"? y/n  [n]:  n
 enable  "break/abort has effect"? y/n  [n]:  n
 enable  "ignore system config info"? y/n  [n]:  y
 change console baud rate? y/n  [n]:  n
 change the boot characteristics? y/n  [n]:  n
 Configuration Summary : 
 => load ROM after netboot fails
 => ignore system config info
 => console baud: 9600
 => autoboot from: commands specified in 'BOOT' environment variable
 do you wish to save this configuration? y/n  [n]:  y
reset

** 부팅시 0x2142 로 부팅 안될때 **
 confreg 0x2142
 
***가상화가 설정 되어 있을경우 푸는 방법***
clear swnum
reset
boot
재부팅 됨

다음과 같이 입력후 재부팅하면 초기화 상태로 들어감.

3. 컨피그 복구 = Switch#copy startup-config running-config  [컨피그 복구 할거 아니면 안함]
    컨피그 삭제 = Switch#write erase

4. switch(config)#config-register 0x2102 로 원래의 confreg로 변경

5. switch(config)#boot system flash bootflash:cat4500e-entservicesk9-mz.151-1.SG.bin
              부팅 파일 지정
6. wr mem

7. reload 하고 부팅 되는지 확인

8. sh version

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1. 부팅시 Ctrl+] or Ctrl+c       <= 너무 다다다 누르면 재부팅 될수도 있음
   Ctrl + L 하면 loader> 로 떨어짐
   loader> cmdline recoverymode=1
   loader> dir bootflash:   <= 이미지 확인
   loader> boot nxos.7.0.3.I2.4.bin     <= 확인한 이미지로 부팅

2. switch(boot)# conf t
   switch(boot)(config)# admin-password < 새로운 패스워드(대문자,소문자,숫자 섞어서 8자 이상  ex : ASDqwe123 ) >
   switch(boot)(config)# exit
   switch(boot)# write erase           <= 기존 컨피그 삭제
   switch(boot)# reload

3. switch(boot)#dir bootflash:    <<< kickstart이미지가 아닌 동일한 이름의 파일

4. switch(boot)#load bootflash:/ 이미지 네임
            자동 리부팅 됨

5. continue with normal setup, skip - bypass password and basic configuration, no
     - continue with Power On Auto Provisioning] (yes/skip/no)[no]: yes

6. Do you want to enforce secure password standard (yes/no): no
  Enter the password for "admin": cisco
  Confirm the password for "admin": cisco

7. Would you like to enter the basic configuration dialog (yes/no): ctrl + c
login: admin
Password:cisco

           ---- Basic System Configuration Dialog ----
  This setup utility will guide you through the basic configuration of
  the system. Only minimal configuration including IP connectivity to
  the Fabric interconnect and its clustering mode is performed through these steps.

  Type Ctrl-C at any time to abort configuration and reboot system.
  To back track or make modifications to already entered values,
  complete input till end of section and answer no when prompted
  to apply configuration.
   
  Enter the configuration method. (console/gui) ? 
  Enter the configuration method. (console/gui) ? console
  Enter the management mode. (ucsm/intersight)? ucsm
  Enter the setup mode; setup newly or restore from backup. (setup/restore) ? setup

  You have chosen to setup a new Fabric interconnect in "ucsm" managed mode. Continue? (y/n): ^C
  Type 'reboot' to abort configuration and reboot system
  or hit enter to continue. (reboot/<CR>) ? cr

  You have chosen to setup a new Fabric interconnect in "ucsm" managed mode. Continue? (y/n): y
  Enforce strong password? (y/n) [y]: n

  Enter the password for "admin": 
  Confirm the password for "admin": 

  Is this Fabric interconnect part of a cluster(select 'no' for standalone)? (yes/no) [n]: 
  Enter the system name:  ^C
  Type 'reboot' to abort configuration and reboot system
  or hit enter to continue. (reboot/<CR>) ? reboot

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