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I noticed that you may not initially be able to set the clock time and date on Nexus 5Ks. For example:

SWITCH-5K2# sh clock
18:16:56.460 UTC Fri Jun 12 2009
SWITCH-5K2# clock set 13:21:00 13 feb 2014
Setting clock from CLI is not allowed in this VDC.
SWITCH-5K2# 

However, the clock set command worked fine on my Nexus 7Ks. After a bit of digging, I found that this is a known big in NX-OS 5.2(1) on Nexus 5Ks: https://tools.cisco.com/bugsearch/bug/CSCub52048/?referring_site=ss

I also noticed that I had an impacted version of the NX-OS:

SWITCH-5K2# sh ver | i system:
  system:    version 5.2(1)N1(1b)
SWITCH-5K2# 

There are a couple of work-arounds:

a) You can set the clock protocol to none in configuration mode, and then set the clock and time.

SWITCH-5K2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SWITCH-5K2(config)# clock prot none
SWITCH-5K2(config)# clock set 13:23:00 13 feb 2014
Thu Feb 13 13:23:00 UTC 2014
SWITCH-5K2(config)# sh clock 
13:23:11.122 UTC Thu Feb 13 2014
SWITCH-5K2(config)# 

b) You could also use NTP (or PTP) to set the clock and date.

SWITCH-5K2(config)# clock prot ntp 
SWITCH-5K2(config)# sh cloc 
13:23:31.519 UTC Thu Feb 13 2014 
SWITCH-5K2(config)# sh run | i ntp 
SWITCH-5K2(config)# 
SWITCH-5K2(config)# ntp server 172.16.3.4 use-vrf management 
SWITCH-5K2(config)# ! my NTP server is reachable from the management port 
. . .
! wait awhile for NTP to synch with the server (also for me to eat lunch)
SWITCH-5K2#  
SWITCH-5K2# sh clock 
14:34:43.470 UTC Thu Feb 13 2014 
SWITCH-5K2# sh ntp statistic loc
system uptime:          8017
time since reset:       8017
old version packets:    482
new version packets:    0
unknown version number: 0
bad packet format:      0
packets processed:      482
bad authentication:     0
SWITCH-5K2# sh ntp peer-status
Total peers : 1
* - selected for sync, + -  peer mode(active), 
- - peer mode(passive), = - polled in client mode 
    remote               local                 st   poll   reach delay
------------------------------------------------------------------------
*172.16.3.4             0.0.0.0                 2   64     377   0.00189 
SWITCH-5K2# 

— cwr

Carole Warner Reece

Architect

A senior network consultant with more than fifteen years of industry experience, Carole is one of our most highly experienced network professionals. Her current focus is on the data center and on network infrastructure.

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Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.

 

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