시스코 스위치(ios-xe) 스택 관련 명령어.
* 작업 환경
스위치: C9200L-48T-4X
OS: Cisco IOS XE Software, Version 17.03.05
1. 스택 케이블 연결 전, 후
스택 케이블 연결전 switch 확인하면 아래처럼 Active 상태가 보인다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 1 V03 Ready
스택 케이블을 연결하면 스위치가 자동으로 재부팅된다.
Switch# Chassis 1 reloading, reason - stack merge Aug 8 07:56:58.554: %PMAN-5-EXITACTION: C0/0: pvp: Process manager is exiting: reload cc action requested Aug 8 07:56:58.580: %PMAN-5-EXITACTION: F0/0: pvp: Process manager is exiting: reload fp action requested Aug 8 07:57:03.415: %PMAN-5-EXITACTION: R0/0: pvp: Process manager is exiting: rp processes et with reload switch code Aug 8 07:57:14.017: %PMAN-3-PROCESS_NOTIFICATION: R0/0: pvp: System report /crashinfo/Switch_1_RP_0-system-report_1_20220808-075704-UTC.tar.gz (size: 8870 KB) generated
재부팅후 상태 확인해 보면, 우선순위(priority)가 모두 1인 상태며 이 경우 MAC주소가 가장 작은 스위치가 Active 스위치가 된다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 1 V03 Ready
2 Member f8e9.4f66.e000 1 V03 Ready
3 Member f8e9.4f95.2c80 1 V03 Ready
시간이 조금 지나면 standby 스위치, member 스위치가 결정된다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 1 V03 Ready
2 Standby f8e9.4f66.e000 1 V03 HA sync in progress
3 Member f8e9.4f95.2c80 1 V03 Ready
standby 스위치가 동기화되는 중에는 스위치 설정이 불가능 하다.
Switch# Switch#conf t Config mode cannot be entered during Standby initialization or when switch is in recovery mode
시간이 조금 지나면 동기화가 완료 되고, 설정이 가능하다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 1 V03 Ready
2 Standby f8e9.4f66.e000 1 V03 Ready
3 Member f8e9.4f95.2c80 1 V03 Ready
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
2. 스택 연결 상태 확인
show switch neighbors 명령으로 스택포트와 연결상태를 확인 할 수 있다.
Switch#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 2 3
2 3 1
3 1 2
show module 명령으로 스위치 모델과 시리얼 번호등의 정보를 확인할 수 있다.
Switch#show module Switch Ports Model Serial No. MAC address Hw Ver. Sw Ver. ------ ----- --------- ----------- -------------- ------- -------- 1 52 C9200L-48T-4X JAE26271PW9 f8e9.4f52.db00 V03 17.03.05 2 52 C9200L-48T-4X JAE26271PXD f8e9.4f66.e000 V03 17.03.05 3 52 C9200L-48T-4X JAE26271NWT f8e9.4f95.2c80 V03 17.03.05
스택 포트 확인하면 연결된 케이블 길이까지 확인 가능 하다.
Switch#show switch stack-ports summary Sw#/Port# Port Status Neighbor/Port Cable Length Link OK Link Active Sync OK #Changes to LinkOK In Loopback ------------------------------------------------------------------------------------------------------------------- 1/1 OK 2/2 50cm Yes Yes Yes 2 No 1/2 OK 3/1 50cm Yes Yes Yes 3 No 2/1 OK 3/2 50cm Yes Yes Yes 1 No 2/2 OK 1/1 50cm Yes Yes Yes 1 No 3/1 OK 1/2 50cm Yes Yes Yes 1 No 3/2 OK 2/1 50cm Yes Yes Yes 1 No
3. 스위치 우선 순위와 Role 변경하기.
Switch#switch 1 priority 14
Switch#switch 2 priority 15
Switch#switch 3 priority 13
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 14 V03 Ready
2 Standby f8e9.4f66.e000 15 V03 Ready
3 Member f8e9.4f95.2c80 13 V03 Ready
우선순위는 변경되었지만 스위치의 Role은 그대로인 상태다. 이때 우선 순위가 높은 스위치를 Active 스위치로 변경 하도록 한다.
2번 스위치를 Active 상태로 변경하려고 하면 아래처럼 스택을 먼저 삭제하라는 메시지를 볼 수 있다.
Switch#switch 2 role active WARNING: Changing the switch role may result in redundancy mode being configured to designated Active/Standby mode for this stack. If the configured Active or Standby switch numbers do not boot up, then the stack will not be able to boot. Do you want to continue?[y/n]? [yes]: yes Designated active switch number is same as designated standby switch number, please run switch clear stack-mode first.
스택이 스위치 3대로 구성되어 있으므로 스택을 삭제하지 않고 원하는 우선순위에 원하는 role을 할당할 수 있다.
먼저, 3번 member 스위치를 standby 스위치로 바꾼다.
Switch#switch 3 role standby
WARNING: Changing the switch role may result in redundancy mode being configured to designated Active/Standby mode for this stack. If the configured Active or Standby switch numbers do not boot up, then the stack will not be able to boot. Do you want to continue?[y/n]? [yes]: yes
Switch#show switch
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 14 V03 Ready
2 Standby f8e9.4f66.e000 15 V03 Ready
3 Member f8e9.4f95.2c80 13 V03 Ready
그리고, standby 스위치였던 2번 스위치를 active 스위치로 변경한다.
Switch#switch 2 role active
WARNING: Changing the switch role may result in redundancy mode being configured to designated Active/Standby mode for this stack. If the configured Active or Standby switch numbers do not boot up, then the stack will not be able to boot. Do you want to continue?[y/n]? [yes]: yes
Switch#show switch
Switch/Stack Mac Address : f8e9.4f52.db00 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f52.db00 14 V03 Ready
2 Standby f8e9.4f66.e000 15 V03 Ready
3 Member f8e9.4f95.2c80 13 V03 Ready
재부팅하고 확인한다.
Switch#reload System configuration has been modified. Save? [yes/no]: yes Building configuration... [OK]Reload command is being issued on Active unit, this will reload the whole stack Proceed with reload? [confirm]
재부팅하면 아래처럼 우선순위가 가장 높은 스위치가 Active 스위치가 된 것을 확인 할 수 있다.
Switch# show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Member f8e9.4f52.db00 14 V03 Ready
3 Standby f8e9.4f95.2c80 13 V03 Ready
이제, 2번 스위치를 standby 스위치로 변경한다.
Switch#switch 2 role standby
WARNING: Changing the switch role may result in redundancy mode being configured to designated Active/Standby mode for this stack. If the configured Active or Standby switch numbers do not boot up, then the stack will not be able to boot. Do you want to continue?[y/n]? [yes]: yes
Switch#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Member f8e9.4f52.db00 14 V03 Ready
3 Standby f8e9.4f95.2c80 13 V03 Ready
다시 재부팅한다.
Switch#reload
Reload command is being issued on Active unit, this will reload the whole stack
Proceed with reload? [confirm]
Switch#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 HA sync in progress
3 Member f8e9.4f95.2c80 13 V03 Ready
시간이 조금 지나면,
Switch#sh switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 Ready
3 Member f8e9.4f95.2c80 13 V03 Ready
4. 스택에서 스위치 제거.
3번 스위치를 물리적으로 제거(스택 케이블 제거)하면, 아래처럼 Removed로 보인다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 Ready
3 Member 0000.0000.0000 0 Removed
재부팅을 하면 Provisioned로 보인다.
Switch#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 Ready
3 Member 0000.0000.0000 0 Provisioned
3번 스위치를 unprovision한다.
SwitchF#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SwitchF(config)#no switch 3 provision
SwitchF(config)#end
SwitchF#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 Ready
3 Member 0000.0000.0000 0 Unprovisioned
설정을 저장하고 재부팅한다.
SwitchF#wr Building configuration... [OK] SwitchF#reload Reload command is being issued on Active unit, this will reload the whole stack Proceed with reload? [confirm]
재부팅 후 확인하면 아래처럼 원하는 결과를 볼 수 있다.
SwitchF#show switch
Switch/Stack Mac Address : f8e9.4f66.e000 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active f8e9.4f66.e000 15 V03 Ready
2 Standby f8e9.4f52.db00 14 V03 Ready
5. 스택에서 제거된 스위치를 단독으로 사용하기.
스텍에서 제거된 스위치가 switch 2 였다면, 단독으로 사용할때, Gi2/0/x 처럼 인터페이스 이름이 2번으로 시작한다. 그냥 사용해도 되지만, 약간(?) 거슬리므로, 스위치 번호를 1로 바꾸어 사용한다.
Switch#show switch
Switch/Stack Mac Address : 24d5.e465.0280 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*2 Active 24d5.e465.0280 1 V03 Ready
아래 명령으로 번호를 다시 설정한다. 이때, 변경된 설정은 재부팅 후 적용된다.
Switch#switch 2 renumber 1 WARNING: Changing the switch number may result in a configuration change for that switch. The interface configuration associated with the old switch number will remain as a provisioned configuration. New Switch Number will be effective after next reboot. Do you want to continue?[y/n]? [yes]: yes Switch#reload System configuration has been modified. Save? [yes/no]: yes Building configuration... [OK]Reload command is being issued on Active unit, this will reload the whole stack Proceed with reload? [confirm]
재부팅 후 확인해보면, 아래처럼 2 번스위치가 보이는데, 이 스위치를 제거해주면 된다.
Switch#sh switch
Switch/Stack Mac Address : 24d5.e465.0280 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active 24d5.e465.0280 1 V03 Ready
2 Member 0000.0000.0000 0 Provisioned
witch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#no switch 2 provision
Switch#show switch
Switch/Stack Mac Address : 24d5.e465.0280 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active 24d5.e465.0280 1 V03 Ready
2 Member 0000.0000.0000 0 Unprovisioned
참고 문서:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9200/software/release/17-3/configuration_guide/ha/b_173_stck_mgr_ha_9200_cg/managing_switch_stacks.html#concept_j2w_shc_31b