Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [dhcp-server]

Dynamic Host Configuration Protocol (DHCP)

The DHCP service is a client/server application that allows "clients" to obtain configuration information (typically for network settings) from a "server".

Questions carrying this tag should focus on the server-side more than the client-side.

540 questions
0
votes
1 answer

Refreshing Windows DHCP Server reservation active/inactive state

I have a Windows DHCP server with a number of reservations. These all seem to work correctly (in that the addresses are correctly distributed) but, somehow, the Active/Inactive state of these has become corrupted in the Leases view on the DHCP…
jimbobmcgee
  • 2,675
  • 4
  • 27
  • 43
0
votes
1 answer

Server DHCPv6 with Linux Alpine

I want create a server dhcp6 with alpine I'm using Kea-dhcp6. The my file config this is: { # DHCPv6 configuration starts on the next line "Dhcp6": { # First we set up global values "valid-lifetime": 4000, "renew-timer": 1000, …
Seguret
  • 1
  • 2
0
votes
1 answer

netplan - Network with DHCP configured, but no internet

I am trying to configure my Ubuntu Server 20.04 LTS to use DHCP in its network configuration. Many tutorials on the internet recommend that I create the following file with the following settings... root@sinj:/home/brlight# cat…
Eduardo Lucio
  • 269
  • 4
  • 14
0
votes
0 answers

Block the DHCP server from broadcasting into the second ethernet interface

I have setup my DHCP server by following the instructions in https://wiki.debian.org/DHCP_Server. This all works but the issue I am having is the DHCP server is being broadcast in the main company network. How would I stop the DHCP server from…
Paul
  • 131
  • 1
  • 2
0
votes
2 answers

Dhcp reserved addresses

Is it better to use a dhcp server to reserve addresses based on mac address or to assign them statically on the interfaces? I have a small network and i want almost everything to have static ip addresses. Is there any benefit to doing it one way or…
CorinaLarksExtraMild
  • 13
  • 1
  • 5
0
votes
1 answer

Standard Windows Server 2019 wizard setup with AD, DNS & DHCP does not resolve any DHCP client names

I am working myself through learning and setting up a pretty standard Windows Server 2019 (Essentials edition) serving as an AD PDC, DNS- & DHCP server for a very small network. I followed some guides (like this one or this one) to get through the…
user1211286
  • 113
  • 2
0
votes
1 answer

How to migrate dhcp server superscope?

I have super-scope dhcp server on Windows Server 2008 and I want migrate it to new Windows Server 2016 with all scopes, leases and reservations. Is there any way to do this? I know there is netsh dhcp server export command but I have read somewhere…
Pedro20
  • 1
0
votes
1 answer

DHCP Scope Option Sync Scheduled Task

I have two Server 2019 domain controllers with DHCP services running in load-balance mode, which synchronizes leases but not scope options or reservations unless instructed to do so via PowerShell. So all I want to do is schedule…
Vaito
  • 21
  • 4
0
votes
0 answers

Windows DHCP server Rogue Detection algorithm

I'm getting rogue DHCP traffic leaking in from my ISP, through my router, and my Windows DHCP server is shutting down. What does MS Widows DHCP server 'Rogue Detection' detect? At least so far, none of my clients have taken a WAN IP address from the…
user165568
  • 270
  • 1
  • 2
  • 9
0
votes
2 answers

Auto Restore DHCP Backup on Microsoft DHCP Server When Restart (Windows Server 2019)

I have a Windows Server 2019 with DHCP Server installed and a scope configured. To protect the scope from accidental misconfigurations or disasters, I'd like to set a protection method so when I restarted the DHCP Server, It will restore the…
Kevin Timotius
  • 1
  • 2
0
votes
1 answer

Obtaining IP Address when Using NPS/RADIUS with existing lease from Windows DHCP

Problem: I have DHCP clients on a Windows AD network contoso.local, that often can't get an IP address after successfully authenticating over the RADIUS/NPS Server. I found that if the device has an existing lease from another VLAN or Subnet than…
Kevin
  • 1
  • 2
0
votes
1 answer

DHCP Server Authorized But Won't Work

I have 2 DHCP servers that I have had to replace. On I unauthorized the old servers and when I go to authorize the new servers, it is added to the authorized list but the IPV4/IPV6 areas still show not authorized. It looks like this: I have…
JukEboX
  • 815
  • 4
  • 17
  • 46
0
votes
1 answer

RRAS VPN Server - Using DHCP to assign IPs from specific scope

I am trying to configure a Windows 2019 RRAS VPN server to use DHCP for VPN address assignment from a specific network. RRAS VPN Server - 192.168.1.20 DHCP Server - 192.168.1.10 VPN Network / Scope - 192.168.10.0 /24 My DHCP server is located on the…
OPG1987
  • 13
  • 1
  • 3
0
votes
0 answers

Windows 10 fails to register host to DNS server on boot

So the situation is as follows. We have rolled out Windows 10 laptops that auto-connect to the wireless. The clients are Windows 10 and the DNS and DHCP server are Windows. When they are docked, they detect the wired connection and disable…
heartfailure
  • 101
  • 1
  • 2
  • 3
0
votes
1 answer

dhcpd unexpectedly destributes a useless route for another subnet as a default gateway

Our dhcpd.conf defines two subnets such like, subnet 192.168.0.0 netmask 255.255.255.0 { option routers 192.168.0.1; # internet gateway } subnet 192.168.1.0 netmask 255.255.255.0 { option routers 192.168.1.10; # internal network gateway } But…
jumeno
  • 25
  • 6
1 2 3
…
35 36