Solved

DHCP assigned IPs gets disconected Windows 2003 R2

Posted on 2006-07-03
7
326 Views
Last Modified: 2010-04-18
Hi,

For the past two years the DHCP on windows 2000 was configured to give IPs from 10.0.0.1 to 10.0.0.254, i was trying to change this and to add at least 10.0.1.x class. But unfortunatly after doing this, all these clients with these new IPs after 5/10 min gets disconected, ping time out, both XP and Apple clients acts the same.
In the begging i beleived it was because of some networking issue, i have replaced all 4 switches with new ones from HP. The situation is the same.
I have tried to configure a new DHCP server on Windows 2003 R2 machine but no change: the clients with 10.0.0.x can work properly without any interuptions, and the clients who receive the 10.0.1.x IP after 5/10 min gets disconected from alll the servers in the network. If i'm trying to ping from any other machine i get ping time out

Thx
0
Comment
Question by:cmargoi
[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
  • 4
  • 3
7 Comments
 
LVL 10

Expert Comment

by:victornegri
ID: 17031666
Is your subnet mask set to 255.255.254.0 (both in the DHCP scope and also on the machines with static IPs)? Are there any events in the event log on the workstations?
0
 
LVL 1

Author Comment

by:cmargoi
ID: 17031834
Well, the subnet was 255.0.0.0, i was trying to put 255.255.248.0. But this was the first change i've done, to put back 255.0.0.0 because i was also thinking it's caused by subnet problem, altough i've changed the subnet to servers and clients. No luck; if i only change from 10.0.0.1 to 10.0.1.254, having the old subnet 255.0.0.0 the problem persists.
I don't remeber having something in the event viewer of the clients. What i remember is that on the File Server the Apple clients were disconected with

Session from user "xxxxx" was timed out and disconnected by the server. The IP address of the Macintosh workstation is in the data.
Source MACSRV
ID 12061
0
 
LVL 10

Accepted Solution

by:
victornegri earned 300 total points
ID: 17031936
Can the 10.0.1.x computer ping each other when they get disconnected from the 10.0.0.x portion of the subnet? Can you plug a computer( in the 10.0.1.x range) directly into your server (via a crossover cable) to see if the disconnect problem still occurs?
0
Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

 
LVL 1

Author Comment

by:cmargoi
ID: 17032196
Yes. The Apple computers can see eachother. I don't know about PCs and also about connecting the PC directly to one of the servers. I can not put the network offline again, so i'll have to test these options and let you know.
Thx
0
 
LVL 10

Expert Comment

by:victornegri
ID: 17032567
Try pinging from one PC to another and see if you get a response. What OS are the Apple computers running? Do they have appletalk enabled?
0
 
LVL 1

Author Comment

by:cmargoi
ID: 17033242
Yep, they work. OS X is installed (10.4). Appletalk also TCP/IP is available ... this networks works very nice except i change the DHCP scope ....
0
 
LVL 10

Expert Comment

by:victornegri
ID: 17033277
Post your DHCP server settings here including scope and server options you've configured.
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

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

I guess it is not common knowledge to most Wintel engineers/administrators: If you have an SNMP-based monitoring system in your environment (and it's common to have SNMP or Syslog) it's reasonably easy to enable monitoring of the Windows Event logs,…
I've always wanted to allow a user to have a printer no matter where they login. The steps below will show you how to achieve just that. In this Article I'll show how to deploy printers automatically with group policy and then using security fil…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…

623 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