Solved

Cannot ping certain IP address

Posted on 2008-10-07
4
522 Views
Last Modified: 2013-12-23
One remote computer cannot ping the server using its original IP address. The machine that is in this location now is using this IP address, but when we install the new machine with that IP address it cannot ping the server, but can ping other workstations and remote machines. We go through two Adtran switches. I really am stumped by this problem and have not experienced this with any other machines when they were replaced. They are running XP SP2.
0
Comment
Question by:dawned
  • 2
  • 2
4 Comments
 
LVL 3

Expert Comment

by:tismetoo
ID: 22663919
Dawned

Can you provide more detail about the IP addresses in question - I can't get my head around what is connecting to what and from where.
0
 

Author Comment

by:dawned
ID: 22669345
A station control unit (SCU) is connecting to  an Adtran switch in the field. The switch is connected to the Fujitsu equipment (OC-48) which connects to another Adtran switch and then to the server. Basically it is connecting directly to the server without any routing taking place in the field.  The IP addresses are: server x.x.x.1, SCU x.x.x.10, workstations x.x.x.2, x.x.x.4, and x.x.x.5. The SCU can ping all of the workstations and all other SCU's which range from x.x.x.1 to x.x.x.9. We do have a static arp set between the server and the original SCU, but no one else here thinks that could be a problem because the MAC address being statically linked to the IP address should not in their opinion prevent a ping from working.. I am going to try changing the MAC in the arp table anyway to see if that fixes my problem.
0
 
LVL 3

Expert Comment

by:tismetoo
ID: 22671122
Is the Fujitsu equipment a router? Because if not the workstation has no way of accessing the server.

They are also wrong about the MAC address not affecting a ping, unless I misunderstand where the ARP table referred to is in relation to the workstation. If the wrong MAC address points to the desired IP address the packets will not arrive at your new box.
0
 

Accepted Solution

by:
dawned earned 0 total points
ID: 22671347
The Fujitsu is our SONET equipment. We own our own fiber optic cable so by connecting to a switch and then to the SONET it is basically just like having a very long Ethernet cable connecting the SCU to the server. Since the SONET  uses Ethernet, the 10 SCU's that also use Ethernet connect without a router since they are on the same subnet.  Other sections of our system are on a different subnet therefore they connect to a router which then routes the traffic to the server. I was able to resolve the problem by changing the arp table to match the MAC of the new SCU. The guys I work with didn't think the MAC address being statically set to an IP address would prevent a ping from working, but apparently it does. My problem is now solved. Thanks for your comments.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

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

Many of us in IT utilize a combination of roaming profiles and folder redirection to ensure user information carries over from one workstation to another; in my environment, it was to enable virtualization without needing a separate desktop for each…
This article offers some helpful and general tips for safe browsing and online shopping. It offers simple and manageable procedures that help to ensure the safety of one's personal information and the security of any devices.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

821 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