NTP Authentication on Cisco Nexus 7000

[sreelalggbm]

                   Hi,

I am configuring NTP on a new Cisco Nexus 7000 running version 6.1(2).

NTP is working properly between the access switches and Nexus, however when configuring Authentication, NTP is not working anymore.

confguration:

Nexus 7K server

=============

ntp server x.x.x.x

ntp peer q.q.q.q

ntp server e.e.e.e

ntp server r.r.r.r

ntp source-interface  Vlanx

ntp authenticate

ntp authentication-key 1 md5 cisco

ntp logging

ntp master 12

Client 4500

=========

ntp authentication-key 1 md5 cisco

ntp authenticate

ntp trusted-key 1

ntp source Vlanxx

ntp server x.x.x.x key 1 prefer

ntp server c.c.c.c key 1

Please advise why NTP authentication is not working !!!!! on Nexus 7000

[Reza Sharifi]

Hi,

On the 7k, can you also add this command:

ntp distribute

and test again?

http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_2/nx-os/system_management/configuration/guide/sm_3ntp.html

HTH

[sreelalggbm]

Do we need to add this in Admin VDC or the VDC where we are working?

[Samer Labaky]

Hi,

The NTP distribute is needed when you are using CFS Distribution for NTP.

however NTP is working as per sreelalggbm however when authentication is not working.