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

learn more… | top users | synonyms

0
votes
2answers
27 views

Append DNS suffixes to /etc/resolv.conf

Is it possible, and how do I configure CentOS 6.6 so that /etc/resolv.conf will obtain its configuration via DHCP, but will also have additional domain names added to the search line? Bonus points if ...
1
vote
1answer
1k views

Client see Windows Deployment Services but still get “selected boot device failed” error

Like the title says I can't Windows Deployment Services working. The client laptop has an ethernet IP address of 10.0.4.94. On the secondary DHCP server I've set option 60 to PXEClient, option 66 to ...
0
votes
0answers
14 views

Unique record per ip address on Windows DNS

I have a little problem with my DNS server under Windows domain. My DNS server gets automatic registration from clients by dhcp. Please consider this situation: Computer PC01 with dhcp address ...
0
votes
2answers
29 views

Automatic DNS registration only for domain computer

I have a windows domain with a win server 2012 domain controller with dns service installed. In the DNS server there is the automatic DNS registration, is it possible to limit these registration only ...
1
vote
1answer
31 views

Hyper V host not showing in dhcp server client table, but guest is

So I've got Hyper V running on windows 8.1. I configured an external virtual switch which uses my wifi physical card. So I get a virtual adapter that gets its ip from my dhcp server (e3000 router). ...
1
vote
2answers
1k views

Cisco WLAN Controller not pushing out DHCP addresses, what else could it be?

On our Cisco WLAN Controller web interfaces, in Controller > Interfaces, I have made a new interface with these settings: VLAN Identifier 202 IP Address 172.16.202.1 Netmask 255.255.255.0 Gateway ...
1
vote
1answer
4k views

Issue with RHEL7 and disabling NetworkManager

Okay community, let's see if we can figure this one out, cause I'm out of answers. Where I work I am setting up a bunch of RedHat Enterprise Linux servers. There is a collection of RHEL6 and RHEL7 ...
0
votes
1answer
26 views

How to implement DHCP, DNS, hostnames on AWS VPC

This is what I THINK can happen and what I want. I create a VPC in Amazon, put a public subnet into it, put a puppet server instance and a full stack web server instance in the VPC. Now I set the ...
1
vote
2answers
2k views

ISC DHCP fails to sync leases between peers

I use ISC DHCP version 4.1.1 on Debian GNU/Linux on both servers. I tried to solve the following problem using various versions of ISC DHCP but it remained the same. My configuration for failover ...
1
vote
1answer
1k views

Retrieving kickstart and other .img file in pxe remote installation in CentOS

I am trying to installation CentOS through pxe tftp installation. Installation starts but it fails to download image files from the http server. but file are accessible on the http server. Logs from ...
1
vote
1answer
20 views

Mac Host and VMware Fusion Bridged Networking Guest with Incorrect DHCP Client Identifier

System Info: I have four Apple Mac OS X Client host systems (running Yosemite, 10.10.2) bound to an Active Directory domain utilizing a Windows 2012r2 DHCP Server via ethernet - most cabled, one wifi. ...
0
votes
0answers
15 views

Create IPv4 reservation with DUID in Windows Server 2012 DHCP

Can I configure reservations for IPv4 addresses in Windows Server 2012 DHCP for systems which send DHCP requests with a DUID for their client identifier (Option 61)? I have Linux (e.g., Fedora 21) ...
1
vote
1answer
38 views

Windows DHCP MAC-Range to Scope allocation

I wonder if there is any options to map a specific Range of MAC addresses to a specific DHCP address scope. The thing is, I want a specific scope for address allocation to bridged Virtual Machines ...
0
votes
1answer
16 views

Why can I boot and install windows from a MS MDT server, using ISC for the dhcp server, but only under lageacy bios, not UEFI?

Setup is: Windows 2012 R2 with MDT 2013 Ubuntu Server 14.04.2 running ISC dhcp Client can be VM/Hardware doesn't matter. If I stay in legacy bios mode things work splendidly. When I switch to UEFI, ...
0
votes
2answers
866 views

Gateway gets stripped from DHCP Reply through OpenVPN tunnel

I have a bridged OpenVPN setup. This is my server config: port 1194 proto udp dev tap0 ca /etc/openvpn/easy-rsa/keys/ca.crt cert /etc/openvpn/easy-rsa/keys/server.crt key ...
1
vote
0answers
35 views

2008R2 DHCP Server Becomes Unresponsive

At the end of 2013, our single Windows Server 2008R2 DHCP server started becoming unresponsive once every week or so. The server itself was up, but the DHCP server was unresponsive. Attempts to ...
16
votes
3answers
171 views

Phones on some switches cannot complete DHCP process

Background I have a Windows DHCP server (Server 2008 R2) handing out addresses for several scopes. One of those scopes is for some Mitel IP Phones. The phones are configured to use dhcp option 125 to ...
1
vote
1answer
134 views

Ubuntu 14.04 can only access outside networks if using DHCP, not static IPs

I am configuring some server on Ubuntu Server 14.04 (no GUI) and I am have the following configuration: auto lo iface lo inet loopback ## Management network eth0 auto eth0 iface eth0 inet static ...
2
votes
3answers
413 views

DHCP Relay vs Multi-Homed DHCP Server

I'm sketching out a new network topology and I'm unsure of how to solve the issue of DHCP between two VLANs. 10.50.2.0/23 will hold the majority of our users, corporate wifi, printers etc. ...
1
vote
2answers
154 views

Microsoft DHCP server and Unix BIND dynamic DNS

Is there any way to make Microsoft DHCP server to securely dynamically update A and PTR records in Unix Bind DNS zone? Microsoft supports secure update using username/password authentication. Bind9 ...
0
votes
1answer
1k views

How could I fix “No subnet declaration for restart (0.0.0.0)”?

I have a DHCP service installed on my distribution, Backtrack 5 R2 (ubuntu 10.04) and it was working fine, but when I began to configure DNS it suddenly stoped working, how can I make it work again?? ...
0
votes
1answer
77 views

Using AirPort DHCP relay agent info to assign IP by policy from server 2012

We have recently setup a Windows server 2012 DHCP server, with one scope of 10.0.0.0/16 We have a couple of policies in place to make sure certain ranges are assigned to certain devices, e.g. Thin ...
-2
votes
0answers
28 views

DHCP no longer available using ethernet over power [closed]

I have been connecting my PS4 at one point in my house via EoP, similar to this model (mine is just an older model): http://www.netcommwireless.com/product/powerline/np207 This was working fine ...
0
votes
0answers
15 views

IPv6 DHCP for Hyper-V Guests

I have the following configuration: W2K12 with Hyper-V and DHCP Role installed, and I have IPv6 block. The goal is to assign IPv6 via DHCP to guest VMs, and make guest VM to have access to the ...
-1
votes
0answers
26 views

Two DHCP servers in one network [duplicate]

I have two ISPs, two DSL routers (both can work as a DHCP server) and I'd like to set up multi homed routing. The network looks a like this: ISP1 <-> Router1 <-> Switch1 +- Server ...
0
votes
1answer
965 views

dnsmasq(as DHCP server) isn't working in KVM+libvirt envirmont

I'm using dnsmasq as DHCP server in VM environment. But It didn't working. I disabled basic DHCP feature in libvirt. <network> <name>default</name> ...
1
vote
0answers
700 views

DHCP_HOSTNAME isn't working consistently in RedHat 7

Under RedHat/Centos 6.x I used DHCP_HOSTNAME=`hostname -s` in /etc/sysconfig/network-scripts/ifcfg-eth0 to pass client hostname to DHCP for registration in DNS and this worked flawlessly. I'm now ...
0
votes
1answer
11 views

Change DHCP on server 2k3

Ok I am trying to mess with our dhcp settings on our domain server because at this point we kinda have competing dhcp servers between the router and the server. (Long predates me and I have finally ...
0
votes
1answer
2k views

how to detect/Block duplicate/Static IP address on network

i have setup my network using pfsense, having 8 subnets, each one having their own DHCP server range. i have enabled STATIC ARP on the server and static MAC entries, so that no un-known machine can ...
2
votes
1answer
24 views

Stuck with Cisco DHCP pool issue

Yes, I have searched, googled, sworn, googled more but have not quite found the answer I need, .. I have also posted this on a Cisco forum but, as I discovered at stackoverflow, the Stack* forums ...
0
votes
0answers
9 views

How can I assign an IP by UID in DHCPd

Here was answered how to assign an IP by MAC address. I want DHCPd server to assign IP by UID. Can i just add record to dhcpd.conf in the same manner? For example: host example { uid ...
-3
votes
3answers
740 views

How to query specific DHCP server

is there a way how to query a specific DHCP server for an IP address? Something similar to dig @_IP_ADDRESS_ _server_name dig @8.8.8.8 apple.com Thanks
1
vote
0answers
20 views

dhcp relay with failover to local service

I'd like to set up a dhcp server which normally relays to a central site, but has a pool of addresses to hand out if the link to the central site goes down. I'm using isc dhcp server on Debian, but ...
0
votes
1answer
19 views

CentOS as a router — Can't get static IP adress for Internal Zone

I'm trying to make a router with a CentOS 7 box. enp2s2f0 ---> External Zone ---> directly connected to the internet. enp2s2f1 ---> Internal Zone ---> Connected to a PC (will be connected to a switch ...
1
vote
2answers
2k views

Juniper SSG5 DHCP IP Pool is full. Unable to offer IP address to client

hope we have some Juniper guys around, I have configured a Juniper SSG5 as our main firewall/router the DHCP server set on interface bgroup1 to have a rang from 10.10.10.76 to 10.10.10.210 All ...
1
vote
2answers
517 views

dhcpd pool exhaustion - What's the result?

I have a DHCP server that serves leases to several houndred, maybe up to a thousand, different clients on an average day. The pool consists of 242 IPs, and due to the highly dynamic nature of the ...
-1
votes
0answers
21 views

DHCP Policy based on CalledStationID / SSID

Setup: Server 2012R2 Server1: DNS, DHCP, NPS WLAN-Acces point configured as radius-client with two SSIDs 1 DHCP-Scope (lets say 192.168.0.1/22) SSID1-users should be assigned to DHCP-Subscope1 (lets ...
1
vote
2answers
2k views

CentOS 7 is not setting my gateway from DHCP

I have a Minimal Install of CentOS 7. I have disabled the Network Manager as I want to setup my network the "old school" way. systemctl stop NetworkManager systemctl disable NetworkManager ...
0
votes
2answers
878 views

How can I use my AP's DHCP server?

I have a Huwawei modem and a TP Link access point, I did the setup everything works, the TP Link is using the DHCP of the modem. The issue is that I want to use TP LINK as DHCP, not the Huwawei. In ...
0
votes
1answer
40 views

Multiple DHCP uplinks - How to ignore DNS and default route on all but one?

A multi-homed box needs more than one uplink to be configured for DHCP. It needs to ignore default-route and DNS for all but one DHCP uplink. There is a similar question here [ Debian interfaces file ...
0
votes
0answers
8 views

Group reservations in Windows Server 2k12 R2 DHCP

I am moving a mixed network from a Linux DHCP server to a Windows 2012 DHCP. Because of some of the applications our Linux users need, we need to specify different DNS servers for Linux and Windows ...
6
votes
7answers
4k views

Static IP Address assignment vs DHCP address assignment

I manage a small-ish network that consists of less than 70 nodes. The previous system administrators opted to have a dhcp server and manually set dhcp addess. I have opted to rather use dhcp ...
0
votes
0answers
27 views

DHCP from Cisco 1921 failing after switch nr 2

I have a network which uses a Cisco 1921 router. The router is connected to a Dell Powerconnect 2848 switch and from that switch is a connection to a small SOHO Planet switch which 3 computers connect ...
5
votes
5answers
1k views

How does a router get its IP address assigned?

I understand how a device connecting to a router (e.g. 72.73.74.75) gets assigned a local IP address (e.g. 192.168.1.5) using DHCP. BUT, how does the router itself get the IP address assigned from ...
2
votes
0answers
24 views

“Register this connections address in DNS” - unable to automatically tick this box with a VPN connection

Hoping you can help. We have about 70 Microsoft Surface's in our network and they all have a VPN connection that is deployed from our SCCM 2012 Server. the problem I have is they will not update DNS ...
4
votes
1answer
141 views

Possible to have DHCP hand out different DNS server address when using different tunnel?

We have several ASA 5505 deployed. Currently, we have a setup where the local ASA is answering DHCP queries and is configuring clients with two DNS servers: our DR site DNS server (we use AD) and a ...
4
votes
1answer
2k views

Force Windows DHCP to Update DNS for All Current Leases

Is there are way to force Windows 2008R2 DHCP Server to update all DNS entries for all current leases? (Guess the server-side equivalent of ipconfig /registerdns) We had a configuration issue with ...
23
votes
4answers
1k views

1 Year DHCP Lease

Just a little background I'm a fairly young I.T. Tech working in a school only and only been working in the as a technician for a few years so I would still consider myself a "newbie" Anyway, My boss ...
1
vote
3answers
1k views

Linux server not receiving default IPv6 route over PPP link

I'm replacing a pfSense router in a remote office with a small linux device, running Debian. The router only has to handle very basic iptables / DHCP and VPN facilities. It is configured so that the ...
0
votes
3answers
41 views

How do I configure all clients use proxy with out making changes to thier configuration

I am looking to configure a content filter for my network. I have squidgaurd configurared and working. I would like to have all clients use it. This includes clients I have no control over (BYOD ...