Unable to obtain IP Address through a DHCP server, netconnectivity problems

175 pts.
Tags:
DHCP server
IP address
Network connectivity
Our school division is made up of seven schools. All schools point back to the central office location for obtaining an IP address through a central DHCP server. This process has worked flawlessly for years. All of a sudden at one of the schools, the computers are hit and miss for being able to obtain an IP address and thus connect to the server at the school and of course the Internet. I can ping the DHCP server consistently from the server at the school in question. I have replaced both network switches at this school. I have tested for network traffic that could be bringing down the network and found none. All of the other schools in the division are having no problems in this regard. I am looking for some suggestions as to what else may be causing this problem.
ASKED: December 14, 2009  3:27 PM
UPDATED: December 14, 2009  6:35 PM

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Have you looked at anything on the CO side of the equation? Such as any type of firewalling or routing issues that could be getting in the way?

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  • Labnuke99
    I would recommend putting Wireshark on the DHCP server and a problem client and doing a few ipconfig /release & /renew tests and see what the packet captures show. Maybe some device along the path is not pushing the bootpc client requests through the network to the hub site. This is one reason to have a local DHCP server at each site and use a central DHCP server as a backup. This is the design we use on our network and this keeps clients communicating with local resources even if the WAN goes down.
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