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The Dynamic Host Configuration Protocol (DHCP) is a network management protocol commonly used for (among other things) assigning dynamic IP addresses to network clients. The primary benefit of using this technology is you can take a finite amount of IP address space and partition it out to transient users as it is needed, reclaiming addresses no longer in use. The use of DHCP also saves end users and desktop administrators from manually assigning IP addresses to systems. Let's look at how DHCP works.
When configuring DHCP, the network administrator sets a value known as the DHCP lease. This is the amount of time a system may retain an IP address without contacting the DHCP server. When the time expires, the system must reach out to the server and request a renewal of the DHCP lease. Generally speaking, DHCP leases are set to a long period of time (measured in days) on stable networks where the same systems are generally present from day-to-day. On the other hand, networks with many transient users (such as public hotspots) typically have short lease times to allow the efficient reuse of addresses.
DHCP churn is a term used to describe the fact that different systems may obtain the same IP address from a DHCP server when the first system's lease expires. This really isn't a problem, except in two special cases:
- You're trying to track systems for some purpose and don't have access to the DHCP logs. For example, if you're maintaining a spam blacklist and a spamming system shows up on your blacklist with a DHCP-provided address, you may inadvertently block future users of that address from sending mail.
- You're a researcher measuring the prevalence of some phenomenon across the internet and use IP addresses to track systems. If a single system exhibits your target behavior, but has many different dynamically assigned addresses, it might skew your results.
The bottom line is, unless you're in one of those two very special cases, DHCP churn isn't a big deal. You should set your DHCP lease lifetime based upon your expected users needs and not worry about this issue.
*This answer was taken from the related link.
What else can I help you with?
What are two reasons why static ip addressing would be configured instead of DHCP when setting up a wireless network?
The network has relatively few wireless devices.
How can two different networks using DHCP links together?
There can only be one DHCP server on a network. Two DHCP servers will conflict.
Can you configure two dhcp server on a same network?
yes, one can configure two dhcp server on a same network. But for doing this, one has to define different scopes in both dhcp server in order to avoid ip address conflict. Eg. one can configure a scope for a lan with network address of 10.0.0.0 as- 10.0.0.10- 10.0.0.100 in one dhcp server. while other scope would be 10.0.0.101-10.0.0.200 . In this way we can have to dhcp servers on a same network. Which ever dhcp server receives the request for the ip address will provide the ip address. IN case for servers, one can use mac bindingin both servers so that they obtain same ip address
In the Absence of dhcp server which ip client will receive?
A DHCP server will privide a client with a valid IP address for the network for which the DHCP server is providing a service.Where there is no DHCP server the IP address for a client must be set manually. When doing this care must be taken to ensure that two IP addresses are not set the same on the network.
A network has grown too large for technicians to configure network addresses and hosts files for name resolution Which two application layer services should be added to the server to allow these?
DNS and DHCP
What two tasks does the DHCP perform?
The Dynamic Host Configuration Protocol (DHCP) performs two primary tasks: it automatically assigns IP addresses to devices on a network, ensuring that each device has a unique address to communicate effectively. Additionally, DHCP provides other necessary network configuration information, such as the subnet mask, default gateway, and DNS server addresses, enabling devices to connect seamlessly to the network.
When a dhcp server is configured which two ip address should never be assignable to host?
Network or subnetwork IP address. Broadcast address on the network
Which two network services are required for dynamic updates to function properly in a windows 2008 environment?
DNS and DHCP
You have installed and configured a dhcp server on your network. you also have a web server on the same network. The web server requires the same ip address as the dhcp server what should you do?
The only way that could work is if the DHCP service and the HTTP service were configured and running on the same physical machine. Otherwise they could not use the same IP address. DHCP and HTTP do not have to be on separate machines (but it is a good idea to separate them in a network). A better question might be why the two services *require* the same IP address.
Why ip conflict occur in dhcp?
IP conflicts in DHCP occur when two devices on the same network are assigned the same IP address, leading to communication issues. This can happen if a device with a static IP address connects to the network or if the DHCP server's lease time expires while a device is still in use. Additionally, improper configuration of the DHCP server, such as overlapping scopes or insufficient address pools, can also cause conflicts. Regular monitoring and proper network management can help prevent these issues.
How you can communicate two lan segments?
People use servers for such purposes. The server should have at least two network interfaces. Using DHCP server options you can connect two and more networks together.
What kind of IP addressing is used when a DHCP server is not available on a network?
as we know two types of ip are used so here static ip used
