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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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Different Windows DHCP scopes on a single network?

Before I joined the company I work at, someone decided to make use of the 10.150.0.0/16 range for the company LAN (despite the company not having nearly that many devices). I think their idea at the time was to use the 3rd IP byte (10.150.X) to…
MBender
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Can Server 2012R2 DHCP support a second gateway for subset of clients?

I have one subnet with Server 2012R2 DC. It is also my DHCP. I have two locations, primary location has ~50 clients, satellite location has 4 clients. We just upgraded to fiber at both locations with an Ethernet Private Line between the two…
JimG
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Setting up VLAN on switch

I'm trying to setup multiple VLAN on my TP Link TL-SG2424 L2 managed switch but I'm not sure if I quite get the concept, or if I'm simply being stupid?! So I have ~ 17 machines connected to my switch, which is in turn connected to the internet (and…
Chris
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DHCP not resolving with DNS

I have set up the ISC's BIND and DHCP implementations on an Ubuntu 16.04 VM as an authoritative name server with authoritative DHCP. My goal is to be authoritative about mobile.mydomain.org and int.mydomain.org with a mixture of both static and DHCP…
Sienna
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Cannot Join Domain by Name but can Ping DC IP and Domain Name

I am trying to connect a Windows 7 client to a Domain, the Domain was created on Windows 2012 Server (Core Version) and is fully working on that. From the Win 7 Client, I can Ping "10.0.0.2" and "xyz.com", but I cannot seem to Join the Domain. The…
Codefull
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Windows 2012 Server DHCP ignores reservations

Given a Windows 2012 Server DHCP server When a add an IP Reservation for an IP address providing the client's MAC address And this client is powered off And a different Windows client with a different MAC address requests this IP address Then the…
H.-G. Buttentee
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DHCP snooping prevents client server from receiving IP

The issue that I am experiencing is that DHCP requests can't be delivered from DHCP server on sw1 to DHCP client server on sw2 when DHCP snooping is enabled. Client servers on the same switch as DHCP server are able to receive DHCP with no problem.…
A. Smith
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Consolidating 2 separate DHCP servers into 1 DHCP cluster

I am looking to be pointed in the right direction for migrating my two current DHCP servers (which are each located on a DC...) to 1 DHCP cluster separate from our DCs. This is all coming from and going to be on Windows. Here is what is going on. 1…
Litzner
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DNS servers provided by dhcp are automatically routed to local MAC address

On my freebsd, when ip and network conf is given by the dhcp, these routes are added for unknown reason : 192.168.138.6 54:a0:xx:xx:xx:xx UHS re0_vlan100 192.168.138.5 54:a0:xx:xx:xx:xx UHS re0_vlan100 The mac address is the one…
Elio Maisonneuve
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dhcpd daemon taking huge amount of memory and restarting with out of memory error

I have to configure isc-dhcp-server for 1 million clients which listens on 4094 vlan tagged interfaces, where each vlan interface is mapped to a subnet declaration. Therefore in total 4094 subnet declarations in conf file with 253 clients in each…
user8070445
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WDS server without DHCP server (DHCP from Cisco switch 375)

i want to create a WDS(windows server 2012) server in my environment my environment divided in multiple subnets DHCP provided from a Cisco switch 375 not from a windows server is it possible to configure WDS in such an environment??? WDS server IP…
Zaid Al-ANi
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Replacing router's DHCP server with Windows Server DHCP

I have a D-Link / TP-Link router which is working as DHCP server leasing IP address to IP phones and workstations. I need to replace this with Windows Server 2012 without interrupting the operation of the devices. How this is possible?
truthtriumphs
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One DHCP server on two subnets

How do setup dhcpd.conf so that all clients connected to NIC 1 will have 192.168.2.x IPs and all clients connected to NIC 2 gets 192.168.3.x IPs and all with netmask 255.255.248.0. My current dhcpd.conf config file: option subnet-mask…
jericho
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Migrating DHCP - keeping existing assignments

I've inherited a fairly messy situation with a production network. DHCP is being handed out by a proprietary vendor device, and we need to retire this device as soon as possible. We'll be moving to pfSense for DHCP (and many other things); however,…
KenD
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Windows Server Internet Working But not domain PC'S

Our school has all of there servers, etc... setup already. I have installed Microsoft Windows Server 2012 r2 on a spare laptop. Our class teacher is wanting to setup a domain just for the users in our class. We don't want to use the school domain…
Will Peasley
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