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Hello Experts,<br />
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I work at a school and despite running DHCP on our main router with only a few static ip's set for printers, we are constantly getting the, &quot;there is an ip conflict with another system on the network&quot; error messages. &nbsp;I was told to try to use wireshark to try to figure out if there is another unknown router or device running DHCP on the network that might be causing this problem. &nbsp;I've installed wireshark, but I've only used the program once or twice and I have no idea how to get this information. &nbsp;Can anyone shed some light on this? &nbsp;Can anyone suggest what else I can do to figure out these ip conflict messages?
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Hello Experts,

I work at a school and despite running DHCP on our main router with only a few static ip's set for printers, we are constantly getting the, "there is an ip conflict with another system on the network" error messages.  I was told to try to use wireshark to try to figure out if there is another unknown router or device running DHCP on the network that might be causing this problem.  I've installed wireshark, but I've only used the program once or twice and I have no idea how to get this information.  Can anyone shed some light on this?  Can anyone suggest what else I can do to figure out these ip conflict messages?

How to use wireshark to detect other routers or DHCP servers that might be on my lan? ip conflicts

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.

TCP/IP

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).