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Have a look at this URL <a href="http://www.symantec.com/connect/downloads/detect-rogue-dhcp-servers-network" rel="ugc">http://www.symantec.com/co<wbr />nnect/down<wbr />loads/dete<wbr />ct-rogue-d<wbr />hcp-server<wbr />s-network</a>. This tool should do exactly what you need.
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I have several dhcp servers and I want to have only one with relay agents. The only problem is I need to find all servers handing out dhcp. Is there a tool or preferred method to do this?<br />
<br />
Thanks
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I have several dhcp servers and I want to have only one with relay agents. The only problem is I need to find all servers handing out dhcp. Is there a tool or preferred method to do this?

Thanks

DHCP IS WONKY

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.

Network Management

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.