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Questions tagged [dhcp]

DHCP stands for Dynamic Host Configuration Protocol and is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol.

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), though there are many more possible configurations that can be sent out using the DHCP protocol.

More in-depth detail on DHCP and its implementation can be found at Wikipedia.

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Does a Linux DHCP server have IP conflict prevention?

Scenario: We are migrating DHCP off our Cisco gear and onto a Red Hat 6.7 server. I am concerned about clients who will not release and renew for several days. Since the new server will not have any bindings once it goes into production, how does it…
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DHCP Reservation Without Knowing MAC

Is there any possible way to have a DHCP reservation set for a device which I do NOT know the MAC address for? In other words, is there any thing that might just be unique for a certain model of hardware's DHCPREQUEST besides the MAC address which a…
azurepancake
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Configuring ISC DHCP server to not serve IP's on the local network

Is it possible to have a DHCP server serve subnets for multiple network segments, but not its own local subnet? I have a DHCP server on a subnet 10.x.x.x. It serves approximately 125 subnets on various 10.x networks. I'm attempting to migrate this…
blindsnowmobile
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DHCP reservation with virtualized AD DS

My main purpose is to provide SQL Server Analysis Services (SSAS) on a single physical machine running on say cloud provider premises. Just a remote box that should be accessible worldwide through VPN. Since SSAS uses only Windows authentication…
erop
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Windows Server with Router in the same network, How to configure?

I have a network with Router that provide DHCP and DNS services to my network. Also, i have a windows server 2008R2 in the same network. I have +100 computers in the network, some must join the windows server and the other not. How i should…
Wathiq Ghazi
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Multiple IP addresses

I am developing a number of mobile websites (using IIS), and I want to test them using my mobile device which is connected on the same LAN. I would like to access each website via a different local IP address, such as 10.0.0.5, 10.0.0.6 etc. (Using…
wezten
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Hosting DHCP/PXE server on windows embedded

I am trying to boot a device through pxe, this device is connected to a windows embedded 8 (industry/standard) host pc. It should be possible I think and searches point me in the direction to using WDS. I just cant seem to find any references…
Daanvl
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Create smaller subnets from large subnet

My network is 10.10.0.0/16. I would like to break this up into /24s. My environment: I use /etc/hosts with dnsmasq for DNS and isc-dhcp-server for DHCP on an Ubuntu 14.04 server (gateway, router) with two NICs. eth0 connects to the ISP switch and…
Kheldar Ambar
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How to force DHCP server to provide a new IP?

I am using DHCP option 50 (client is an embedded device running eCos RTOS) to request a specific IP from the DHCP server (DHCP server is a built-in one with Windows 2003 server). First DHCP client request an IP a.b.c.d and server assigns it. Then…
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Direct server to server traffic via LAN

This may seem like a dumb question... or it may well be a dumb question (lol)... but its something I have never had to deal with and know little about. I have 15 physical servers in a datacenter, about half of which are now on a domain (the domain…
David Borneman
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How to interpret certain aspects of dhcpd logs

I have a DHCP server running on RHEL 6.6. I understand the process (somewhat) involving how the conversation goes from a protocol standpoint to set up a lease. 1 - The DHCPDISCOVER message. 2- The DHCPOFFER, 3- the DHCPREQUEST, and 4- The DHCPACK.…
user53029
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classes declaration inside of subnets in isc dhcp

I would like to use class declarations based on a subnet scope, is that allowed? Or are all classes global scope? here is my dhcp.conf snippet: subnet 10.200.147.0 netmask 255.255.255.224 { authoritative; option domain-name-servers …
Polish Nightmare
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Hyper-V 2016 Gen2 VM PXE DHCP Timeout (Wireshark DHCP Discover -> Offer -> ???)

I've built a test lab running Windows Server 2016 and SCCM 2016 and I'm having an issue with PXE booting a VM to install an OS via SCCM. Here's the run down on the configuration. At this stage SCCM isn't being touched Windows Server 2016 Technical…
Ben Bowman
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Is there a benefit to assigning a static IP to an instance instead of DHCP

We are creating a Windows AD instance in our AWS VPC and we're wondering if there is any benefit to assigning a static IP to that instance instead of using the default behavior of a subnet which is to assign a DHCP address. Given that the DHCP…
Justin
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Create DHCP for 1000 Users

Currently we are running windows server 2003 with static ip for 200 users ,now the organiszation is about to expand so atleast 1000 people will be working, so i needed to create a DHCP for 1000 users. Possible way is creating superscope and joing…
bhanu prakash
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