Nexus 5K NTP not syncing with server

[support1@lima.co.uk]

I am using external NTP servers to set the time on my 5k's but the switch doesnt seem to be syncing....

show run | i ntp
ntp server 1.uk.pool.ntp.org
ntp server 3.uk.pool.ntp.org
ntp source-interface Vlan15
ntp logging

Total peers : 2
* - selected for sync, + - peer mode(active),Switchin
- - peer mode(passive), = - polled in client mode
remote local st poll reach delay vrf
-------------------------------------------------------------------------------
=46.17.63.196 10.10.205.249 16 64 0 0.00000 default
=139.162.192.13 10.10.205.249 16 64 0 0.00000 default
# ping 46.17.63.196
PING 46.17.63.196 (46.17.63.196): 56 data bytes
64 bytes from 46.17.63.196: icmp_seq=0 ttl=46 time=11.424 ms
64 bytes from 46.17.63.196: icmp_seq=1 ttl=46 time=11.401 ms

switch cannot ping 1.uk.pool.ntp.org by dns..

[balaji.bandi]

Try ntp server 46.17.63.196

Do you have DNS Server configured in nexus 5K if not pelase configure, ping with DNS before it sync with NTP.

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/system_management/502_n1_1/b_Cisco_n5k_system_mgmt_cg_rel_502_n1_1/cisco_n5k_system_mgmt_cg_rel_502_n1_1_dns.html

[marce1000]

 - Possible DNS issue may also be confirmed by using an ip address from the mentioned ntp-pools instead, if that works, then look at DNS.

 M.