Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

How do I setup NTP configuration ?

Posted on 2009-07-05
2
Medium Priority
?
768 Views
Last Modified: 2012-05-07
I have around 20 Routers (3800,2800). how do I setup  NTP server/client configuration suppose I have RTR-1, RTR-2, .... RTR-20
I want to make RTR-1 NTP server and RTR-2 backup server
all remaining router clients
also is it good if I implement all site's switch (backbone, dist, access) to be NTP clients in order to get click synchronizing
0
Comment
Question by:paintco
[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 Comments
 
LVL 34

Accepted Solution

by:
Istvan Kalmar earned 1000 total points
ID: 24781640
Hi,


Follow these steps:

   1. Choose the NTP server your devices will use.
   2. Find out the IP address for this server. It could be an external source such as NIST, or it could be an internal device that offers NTP services (such as a hardware device or software server from Symmetricom).
   3. Enter the following commands on the IOS device:
Router# configure terminal
Router(config)# ntp server <IP address of NTP Server>
   4. Verify the association with the server using the show ntp status and show ntp associations commands.

Before you get started, I'd like to point out a couple of things to keep in mind:

    * NTP is a slow protocol, and the formation of NTP associations can take a long time. So, don't expect anything to happen fast. You can keep an eye on it using the debug ntp <option> set of commands.
    * If you decide to use an Internet NTP server, make sure you open UDP port 123 inbound on your firewall to your NTP client.

http://www.cisco.com/en/US/docs/switches/lan/catalyst5000/catos/5.x/configuration/guide/ntp.html
0
 
LVL 34

Assisted Solution

by:Istvan Kalmar
Istvan Kalmar earned 1000 total points
ID: 24781666
Sorry,

Please refer this links:

http://www.cisco.com/en/US/docs/switches/lan/catalyst4840g/12.0_13_wt6_1/configuration/guide/4840ntp.html

Don't forget set the summer time!

clock summer-time *** recurring 2 Sun Mar 2:00 1 Sun Nov 2:00

If you want one devices to syncronize, you must set it to master, and the other devices syncronize here!

Best regards,
Istvan


0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hello , This is a short article on how would you go about enabling traceoptions on a Juniper router . Traceoptions are similar to Cisco debug commands but these traceoptions are implemented in Juniper networks router . The following demonstr…
The Cisco RV042 router is a popular small network interfacing device that is often used as an internet gateway. Network administrators need to get at the management interface to make settings, change passwords, etc. This access is generally done usi…
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…
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…
Suggested Courses

610 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question