Extreme 스위치 시간 설정

Extreme 스위치  시간 설정하기(EXOS 시간 설정)

1. 현재 시간 확인

show switch 명령을 내리면 여러가지 정보가 보여지는데, 현재 시간은 current time 항목을 확인하면 된다.

Switch.1 # show switch

SysName:          Switch
SysLocation:      
SysContact:       support@extremenetworks.com, +1 888 257 3000
System MAC:       00:04:96:51:A9:D5
System Type:      X450e-24p

SysHealth check:  Enabled (Normal)
Recovery Mode:    All
System Watchdog:  Enabled

Current Time:     Tue Mar  3 16:12:35 2020
Timezone:         [Auto DST Disabled] GMT Offset: 540 minutes, name is KST.
Boot Time:        Wed Aug 24 13:55:31 2016
Boot Count:       23
Next Reboot:      None scheduled
System UpTime:    1287 days 2 hours 17 minutes 4 seconds 

Current State:    OPERATIONAL             
Image Selected:   primary                 
Image Booted:     secondary               
Primary ver:      15.3.5.2                
Secondary ver:    15.3.5.2    
                  patch1-10

Config Selected:  primary.cfg                                          
Config Booted:    primary.cfg                                          

primary.cfg       Created by ExtremeXOS version 15.3.5.2
                  145375 bytes saved on Fri Dec 13 14:32:05 2019

2. 날자 시간 수동 조정

아래 형식으로 시간 설정 및 조정이 가능하다.
configure time month day year hour minutes seconds

아래는 현재 시간을 2020년 3월 3일 16시 35분 20초로 설정한다.

Switch.2 # configure time 03 03 2020 16 35 20

잘 적용되었는지 확인 해 본다.

Switch.3 # show switch

...

Current Time:     Tue Mar  3 16:35:24 2020
Timezone:         [Auto DST Disabled] GMT Offset: 540 minutes, name is KST.
Boot Time:        Wed Aug 24 14:16:45 2016
...

3. sntp-client 설정(Simple Network Time Protocol)

시간이 안맞을때 매번 수동 설정을 할 수도 있겠지만, 많이 불편하다. 이제, time 서버로부터 시간을 자동으로 맞추도록 sntp-client 설정을 해 둔다.

sntp-client 설정이 되어있는지 show 명령어로 확인해본다. 아래처럼 sntp client가 설정되어 있지 않다.

Switch.4 # show sntp-client
SNTP client is disabled
SNTP time is not valid
Primary server:   
Secondary server:   
Broadcasts: VR-Mgmt 
Query interval:64
Last valid SNTP update: None till now.
SNTPC Statistics:
 Packets transmitted:
  to primary server:            0
  to secondary server:          0
 Packets received with valid time:
  from Primary server:          0
  from Secondary server:        0
  from Broadcast server:        0
 Packets received without valid time:
  from Primary server:          0
  from Secondary server:        0
  from Broadcast server:        0
 Replies not received to requests:
  from Primary server:          0
  from Secondary server:        0

time 서버를 설정한다. 아래 IP 주소는 time.windows.com 의 IP 주소이다.(호스트네임을 사용하려면 dns-client를 사용가능하게 설정하면 된다.)
타임서버 설정후 sntp-client를 사용하도록 설정한다.

Switch.5 # configure sntp-client primary 40.81.94.65 vr "VR-Default" 
Broadcast VR will be ignored since server configured
* Switch.6 # enable sntp-client 

sntp-client를 확인해 보면 시간이 타임서버와 동기화 된 것을 볼 수 있다.(Last valid SNTP update 부분)

* Switch.7 # show sntp-client
SNTP client is enabled
SNTP time is valid
Primary server:40.81.94.65  VR-Default 
Secondary server:   
Broadcasts: VR-Mgmt 
Query interval:64
Last valid SNTP update: From server:40.81.94.65, on Tue Mar  3 16:51:42 2020

SNTPC Statistics:
 Packets transmitted:
  to primary server:            1
  to secondary server:          0
 Packets received with valid time:
  from Primary server:          1
  from Secondary server:        0
  from Broadcast server:        0
 Packets received without valid time:
  from Primary server:          0
  from Secondary server:        0
  from Broadcast server:        0
 Replies not received to requests:
  from Primary server:          0
  from Secondary server:        0

스위치 로그에는 아래처럼 시간관련 로그가 보인다.

* Switch.8 # show log
03/03/2020 16:51:50.86 <Noti:DM.Notice> Setting hwclock time to system time, and broadcasting time

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