Solved

Internet connection sometimes lost

Posted on 2014-07-24
7
142 Views
Last Modified: 2014-08-21
Hello!

In our business we use a ad (sbs2011). The clients aren't connected via domain.
Sometimes any url isn't displayed (any browser). We only get the information "couldn't access page", while at the same time we can access the page via mobile phone (and mobile connection).
After reloading the page the ~ 10th time the page appears.

I discovered following:
When the page won't load I can ping the name and get the correct answer and IP.
While the page isn't accessible I do an
ipconfig /flushdns
and the page apears immediatly.

So I guess there is an DNS problem. But what kind?
The DNS-logfiles looks fine (just informations)

I discovered that there is no forward-entry in the DNS-Server-Setting.
Shouldn't there any entry, pointing to our router?

Thanks
Jens
0
Comment
Question by:loosain
7 Comments
 
LVL 92

Assisted Solution

by:John Hurst
John Hurst earned 100 total points
ID: 40216526
Try using 8.8.8.8 as a main or alternate DNS server. You can also try 4.2.2.2. (I use the latter). If you are using the DNS supplied by the ISP, it could be out of date or not keeping up.

I assume your server is handling DHCP and not the router.
0
 
LVL 19

Assisted Solution

by:Kash
Kash earned 100 total points
ID: 40216561
if your server is doing the DNS then I would check on DNS forwarders as well. use openDNS or google's DNS
0
 
LVL 22

Assisted Solution

by:David Atkin
David Atkin earned 100 total points
ID: 40216718
To jump on the band wagon - As per the above comments, you're currently using root hints opposed to a DNS forwarders, this can cause such issues.   Add a couple of DNS forwards - 8.8.8.8 (Google) and 8.8.4.4 (Google) are what I mostly use.

Then re-test.
0
Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

 
LVL 35

Assisted Solution

by:Cris Hanna
Cris Hanna earned 200 total points
ID: 40220834
Two parter here.
Why aren't the clients joined to the domain?   Strikes me as very odd that you would setup AD and then not join the clients

But regarding your DNS issue..this is a very well documented issue going back to SBS 2008
http://blogs.technet.com/b/sbs/archive/2009/01/29/cannot-resolve-names-in-certain-top-level-domains-like-co-uk.aspx
So you can either perform the registry fix as outlined here   or setup fowarders
0
 

Author Comment

by:loosain
ID: 40245680
Hi all!

We updated DNS-Server settings. There wasn't activated that this server wil update automatically.
Furthermore there doesn't exists any router-entry.
After changing this two settings the problem was solved.
Thanks for your help
0
 
LVL 35

Accepted Solution

by:
Cris Hanna earned 200 total points
ID: 40246193
Glad to hear you are all squared away
0
 

Author Closing Comment

by:loosain
ID: 40277704
helped.
0

Featured Post

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

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

The problem of the system drive in SBS 2003 getting full continues to be an issue, even though SBS 2008 and SBS 2011 are both in the market place.  There are several solutions to this, including adding additional drive space or using third party uti…
The articles for turning off the Client firewall policy on the internet are for SBS 2008 and don't really help for SBS 2011. They actually moved the Client firewall policy. In 2011, the client firewall policy has moved to the SBS computers conta…
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

863 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now