Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!
Solved
cisco router didn't synchronized with ntp server
Posted on 2012-12-26
hello experts
I can't get Cisco router synchronized with the ntp server.
#show run | in ntp
ntp source Vlan1
ntp server 195.168.200.195
ntp server 195.168.200.95
#show ntp associations
address ref clock st when poll reach delay offset disp
~195.168.200.195 .INIT. 16 - 1024 0 0.000 0.000 15937.
~195.168.200.95 .INIT. 16 - 1024 0 0.000 0.000 15937.
* sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
#show ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 249.9433 Hz, actual freq is 249.9433 Hz, precision is 2**16
reference time is 00000000.00000000 (23:59:00.000 MSD Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.03 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
I can't get Cisco router synchronized with the ntp server.
#show run | in ntp
ntp source Vlan1
ntp server 195.168.200.195
ntp server 195.168.200.95
#show ntp associations
address ref clock st when poll reach delay offset disp
~195.168.200.195 .INIT. 16 - 1024 0 0.000 0.000 15937.
~195.168.200.95 .INIT. 16 - 1024 0 0.000 0.000 15937.
* sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
#show ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 249.9433 Hz, actual freq is 249.9433 Hz, precision is 2**16
reference time is 00000000.00000000 (23:59:00.000 MSD Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.03 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
2-
2
4 Comments
Active 6 days ago
Can you ping the ntp server (I can't ping it from my end)
Are the addresses valid or just not responding to pings
If yes
Is there any firewall policy blocking port 123
I'm assuming you have
Stratum 16?
That's too many generations -
Try linking to one of these Open Access Stratum servers closest to you.
http://support.ntp.org/bin/view/Servers/StratumOneTimeServers
I use these 2
*~128.9.176.30
+~216.218.254.202
Are the addresses valid or just not responding to pings
If yes
Is there any firewall policy blocking port 123
I'm assuming you have
Stratum 16?
That's too many generations -
Try linking to one of these Open Access Stratum servers closest to you.
http://support.ntp.org/bin/view/Servers/StratumOneTimeServers
I use these 2
*~128.9.176.30
+~216.218.254.202
Active 6 days ago
Ok
I see your ntp servers have private IPs.
In your question, you typed
ntp server 195.168.200.195
ntp server 195.168.200.95
Both addresses are public addresses
In your reply, you typed private addresses
192.168.200.95 and 192.168.200.195
Which is the correct IP?
Looks like you may have typed the wrong ip address when configuring the ntp on your router.
I see your ntp servers have private IPs.
In your question, you typed
ntp server 195.168.200.195
ntp server 195.168.200.95
Both addresses are public addresses
In your reply, you typed private addresses
192.168.200.95 and 192.168.200.195
Which is the correct IP?
Looks like you may have typed the wrong ip address when configuring the ntp on your router.
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Quality of Service (QoS) options are nearly endless when it comes to networks today. This article is merely one example of how it can be handled in a hub-n-spoke design using a 3-tier configuration.
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg).
If you're looking for how to monitor bandwidth using netflow or packet s…
Suggested Courses
Course of the Month8 days, 11 hours left to enroll
721 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.