장비를 운영하는 도중 예상치 못한 장비 리부팅이 발생할 경우가 있다.
Watchdog Time Out 증상이 이러한 상황에 속한다.
간단하게 이런 증상에서 RMA가 필요한 H/W이슈인지 확인해보자
`show system reset-reason`
----- reset reason for module 1 (from Supervisor in slot 1) ---
1) At 693743 usecs after Sat Dec 17 15:33:26 2022
Reason: Watchdog Timeout
Service: HW check by card-client
Version:
`show logging onboard internal reset-reason`
----------------------------
Module: 1
----------------------------
Switch OBFL Log: Enabled
Reset Reason for this card:
Image Version : 9.3(9)
Reset Reason (LCM): Unknown (0) at time Sat Dec 17 15:33:26 2022
Reset Reason (SW): Reset Requested by CLI command reload (9) at time Wed Jul 13 22:16:02 2022
Reset Reason (HW): Watchdog Timeout (32) at time Sat Dec 17 15:33:26 2022
Last log in OBFL was written at time Sat Dec 17 15:33:26 2022
'show logging onboard kernel-trace'
<6>[2065308.318713] writing reset reason succeeded with retval=0 on cpu=0
<0>[2065308.318717] NMI due WATCHDOG HIT
<7>[2065308.321702] cctrl DBG: cctrl_ow_write dev_type 5 data 4f
<6>[2065308.321703] CCTRL PANIC DUMP
<6>[2065308.321703] =========================
<6>[2065308.321705] WDT last punched at 2065306460351876
<6>[2065308.321707] REG(0x60) = 3c
<6>[2065308.321710] REG(0x64) = 0
<6>[2065308.321713] REG(0x300) = baadbeef
<6>[2065308.321716] REG(0x304) = baadbeef
<6>[2065308.321716] =========================
<0>[2065308.321717] nxos_panic: Kernel panic - not syncing: WATCHDOG HIT
위의 몇가지 명령어를 통해 장비가 H/W문제인지를 판단할 수 있습니다.
'Cisco Nexus' 카테고리의 다른 글
| N9K-C92348GC's PSU went down and up (0) | 2023.06.16 |
|---|---|
| lcnd: failed to get hp from offset 1728 - kernel (0) | 2023.06.16 |
| N9K MCE Error (0) | 2023.06.16 |
| N7K 와 N9K 비교 (0) | 2023.06.16 |
| protocol identification string lack carriage return - dcos_sshd (0) | 2023.06.16 |