hi,
i would like to see, if my network devices (cisco mainly) are in sync with a predefined ntp network clock.
how can i do that?
Do you want to ensure the devices are configured properly to point to the correct NTP server or the actual times between the devices and the server?
i want to know that the device time differs no more than 1s from the ntp source.
anyone?
Hi bighard,
Cisco implemented a MIB to monitor NTP related informations: CISCO-NTP-MIB : 1.3.6.1.4.1.9.9.168 .
It should allow you to monitor the offset in seconds between the local clock and a NTP server source clock by polling the cntpPeersOffset OID . here is the description of that OID:
"The estimated offset of the peer clock relative to the local clock, in seconds. The host determines the value of this object using the NTP clock-filter algorithm."
You can create a Universal Device Poller to monitor this OID into Orion.
Here is a good resource from Cisco concerning NTP:Network Time Protocol: Best Practices White Paper
This is where I found the information.
I am not sure how to proceed for the other manufacturer, if you post some names/model we might be able to figure out how to monitor their synchronization to the NTP server source.
HTH,
Yann
yes, i've been checking this oid. unfortunately it's not present on my 2960 switches
thanks for your time anyway
You might need to upgrade the CatOS image to support this MIB. It seems the CISCO-NTP-MIB is supported by some 2960 CatOS images as per the Cisco web site.
go to http://tools.cisco.com/ITDIT/MIBS/servlet/index
Click on Cisco IOS MIB Locator
In the new window, Select the CISCO-NTP-MIB and click on Submit.
On the new window, filter to the CAT2960 platform, you will see which image supports the CISCO-NTP-MIB.
