Questions tagged [dhcp-server]
Dynamic Host Configuration Protocol (DHCP)
541
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Deploying DHCP Role and Configure it in too many sites
What would be the best solution to automate building and configuring 60 DHCP Servers in different sites, that include configuring the scopes and all that stuff.
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CISCO DHCP Relay and Server
I want to setup a cisco router to be a DHCP relay but i want to answer dhcp requests locally if the DHCP Relay request won't answer.
In the other word, I want to setup a dhcp relay with fail safe(...
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Why DHCP relay offers are sent back to GIADDR and not source?
Given this network
[DHCP Client]
|
(172.16.0.1)
[DHCP Relay Agent]
(10.1.0.2)
|
(10.1.0.1)
[DHCP Server]
Where the DHCP Server has a pool for 172.16.0.0/16, when the realy-...
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pxe and dhcp on dfferent subnets
Good Day
Please help , i have a dhcp on 192.168.21.0/24 and pxe server on 192.168.1.0/24. Now i want to install hosts in 192.168.21.0/24 using this pxe tftp netboot on 192.168.1.0/24. My hosts in ...
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Server 2012R2 DHCP & DNS Updates
I have the following DNS settings configured on an DHCP scope:
My question is, will the DNS entry be made against the DNS server that the DHCP is configured to go against or will it update the DNS ...
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2
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How do I configure Dynamic Host Configuration Protocol to return a FTP server's IP address along with the interface IP address?
Given that there is a dhcp client, a relay agent and dhcp server. There is also another ftp server. Requirement is that the client starts the DORA process and the server responds with IP address and ...
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0
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Does "broadcast-address" needs to be within defined subnet in dhcpd.conf?
Ideally, broadcast address should be last address of defined subnet.But I don't see dhcp server enforces such restriction.A brodcast-address defined outside subnet in dhcpd.conf is accepted by dhcp ...
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How to configure a MikroTik hAP ac lite router as a Layer 2 switch?
Here is an overview of the network topology:
Both the Fritz!Box 7340 and MikroTik hAP ac lite router currently act as DHCP servers, effectively splitting the network in two LANs.
The MikroTik router ...
- 435
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Is there any implication of having 2 authorized DHCP servers listed with the same address?
These are Windows Server 2008r2 machines in an AD environment.
Some time in the past a DHCP server failed. An admin replaced it using a different host but the same address. Later on, when ...
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Hyper-V internal network, VMs not getting IP from DHCP server?
Hyper-V is running in my Win 10 pc, inside there are a Win Srv 2012 R2 and a Win7 vm.
2012 R2 is the main DC, and also DHCP server.
What I want: The VMs to be in a separate network from the host, but ...
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DHCP multiple WAN
There is a network, DHCP enabled: 192.168.28.0/22 (WINDOWS SERVER 2012R2)
There is 2 WAN connections:
WAN1 (192.168.28.1)
WAN2 (192.168.29.1)
I want to tell DHCP that domain users go to WAN1, ALL ...
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I can't provide internet using DHCP server
I have the follwing Network, the DHCP + Internet are provided by the router "TP-Link N600" and I want to add DHCP rule on our server instead of the router, so how can I provide internet to the AP's ...
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Can't bind isc-dhcp-server to interface
OS: Debian Wheezy
DHCP Server: isc-dhcp-server 4.2.2
I need dhcpd to listen to the specific interface on a machine with 2 active NICs.
I added INTERFACES="eth5" to /etc/default/isc-dhcp-server but ...
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Calculate DHCP lease creation time by subtracting lease time from expire time
I am writing a script to export information regarding all active DHCP leases on a server and I would like to have the timestamp of when the lease was created. Unfortunately, the DHCP service we use ...
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Why there are two IP address for remote windows server ? Remote bar is showing different IP, And my Server ip is different .. Why?
I have bought new windows server 2012 R2 for hosting website on IIS of server.
But I'm confused with the IP address of server. I'm accessing this server using mstsc(Remote Console/Terminal). When i ...
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windows dhcp server add static arp
in our network, Windows DHCP server 2008 broadcast Gateway's IP as router, recently some Laptop Client (most of them has personal ESET firewall installed by owners) start to get wrong arp for gateway, ...
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Having issues with DHCP classes
I'm having issues with DHCP classes matching mac addresses.
We have a lot of one type of machine and I want to get the IPMI cards in the same pool.
I've tried the following;
class "IPMI" {
match ...
2
votes
1
answer
835
views
dhcp 'next-server' outside broadcast domain, without using ip helpers(aka dhcp relay)
Can you set a 'next-server' option in dhcp that is outside of the client's broadcast domain? I'm trying to pxe-boot from a server outside my client's network, using isc-dhcpd
In my lab I see the next-...
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dhcpd option 82 logging not working
We are implementing Option 82 in our network and I am just scratching the surface of how to setup my server. I have successfully created my first Option 82 ACL based on the agent circuit ID that is ...
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What does "Interface xxx matches multiple shared networks" means in the context of VLANs?
I have an AP which broadcasts several SSIDs tagged with different VLANs. The AP is wired to a server which manages the traffic.
There are several different well documented ways to set up a DHCP ...
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split dhcp subnet in two parts
I am trying to split isc dhcp subnet, so that in one part(0..128) I have only reserved IPs, and in the other part(128..255) - dynamic range. I tried this configuration(bellow), but I always get a ...
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How to disable NetBIOS over TCP/IP on pfSense via DHCP
I have a pfSense applicance running version 2.x. I want to disable NetBios over TCP/IP via the DHCP Server so it is not activated on Windows clients. It's possible to do it with a Windows server but I ...
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can a windows server 2012 act as a domain controller to only a select range of ip addresses?
I am working with a company that wishes to migrate from a peer to peer network to a domain controller. They have already purchased a Windows 2012 server and have set it up for DNS and DHCP, Active ...
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IPv6 address lifetime: preferred versus valid lease
What is the difference between "Preferred Life Time" and "Valid Life Time" lease. What is the point of preferred and why not just use valid life time lease? Thanks.
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How can I set the Ethernet infrace classid through Powershell?
Hey guys I wonder if it's possible to set classid on Ethernet interface via Powershell? I tried that on server 2k12 R2 via ifconfig but I get no results.
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WiFi AP Broadcasts DHCP Requests to all VLANs
My setup looks like this:
Switch (T1600G-28TS)
-------------------------------
| 1 | | | 6 | 5 | | ... |
-------------------------------
| | | * ...
- 101
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How to list DHCP options sent to a client from a DHCP server in Windows?
How does one list the options that are sent to a client from a DHCP server in Windows? Using PowerShell or the command line?
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dhcp server not starting on CentOS 5 (XenServer 6.5)
I have a host with XenServer 6.5 (based on CentOS 5) that is currently set up using a static IP by following the procedure here. I have been provided with an IP address, netmask and gateway - I ...
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DHCP/Gateway done by pfSense Virtual Machine to physical network
I have an ESXi host server that has a pfSense virtual machine within it. The VM is acting as a DHCP Server / Gateway to an internal vSwitch that is within that ESXi host. If I use a physical NIC on ...
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dhcpd (isc-dhcp-server) not using part of address range
dhcpd (isc-dhcpd-4.3.4 under Debian) ignores part of specified address range.
I have the subnet 10.24.32.0/22 assigned to interface:
10.24.32.0/22 dev net0 proto kernel scope link src 10.24.32.1
...
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An active directory domain could not be contacted
I have this problem with joining client PCs to the domain. I think i did everything right, set up AD DS, DHCP, DNS on my server, turned off the DHCP server on my router. I ensured that the Preferred ...
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DHCP leases file has 200+ instances of the same lease?
I'm not sure what's going on here. I have a CentOS 7 DHCP server, and the leases file is growing at a linear but steady rate - it's re-issuing the same lease to the same MAC over and over again, and ...
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dhcp server gives "no free leases" error although there should be available IPs
We have a small HPC cluster of about 40 machines running Rocks Linux Distro 6.2 (based on Centos 6.6). I have been trying to add 6 more machines to the system in the last few days. The first 3 were ...
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forward eth0 traffic over tun0
I'm trying to setup a raspberry pi 3 as a vpn access point(?)
So far I have wlan0 configured to connect to a mobile hotspot, when this is connected openvpn connects to the vpn server.
This works fine,...
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DHCP server assigning same IP address even if Computer is connected in different VLAN
DHCP Server OS - Windows Server Standard 2008 R2
DHCP Client OS - Windows 7, Linux based OS etc..
I have configured DHCP Server on Windows Server Standard 2008 R2 with SuperScope. Let assume that i ...
- 1,367
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DHCP server not found during PXE boot
I'm trying to run a PXE server and encountering the “PXE-E51: No DHCP or proxyDHCP offers were received” error, which usually means that:
the PXE client did not receive a reply to its DHCPDISCOVER ...
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How to connect docker containers to physical local network?
I have a automation script which runs clusters docker containers which are need to be in my local network. Right now i am manually collecting list of un-used IP address in an array and i am poping out ...
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dhcpd class match on hostname or mac address
We are running DHCPD 4.1.1-P1 on a RHEL 6 server. Currently we have 1 class defined for deny purposes. We now have a need for a class match to allow all devices that match a variable and deny ...
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Few Concern: Migration domain controller 2008 R2 to 2012 R2 Domain
My Topic is Migration of 2008 R2 domain controller to 2012 R2 (All domain Controllers.)
Current Set-up.
I have 3 Domain Controller.
DC2008r201: Running As PDC and DNS Installed.
DC2008r201. ...
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Smaller subnet mask to "merge" VPN-connected LANs?
I have two LANs connected to different internet connections (in different cities, in fact):
ISP1 -> LAN 1: 192.168.10.0/24
ISP2 -> LAN 2: 192.168.11.0/24
On each LAN is a router. Both routers ...
- 1,273
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Sonicwall firewall router dhcp server stops working intermittently
I just bought a Sonicwall SOHO which is the new model that replace TZ105, TZ 205 series.
The network stops working intermittently. The whole network is down after every 30~70 minutes of uptime, no ...
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Why does a DHCP4 client not respond to the DHCP Offer from a DHCP server?
An extremely simple DHCP server works reliably with Windows 10 PCs and Android devices. It receives DHCP Discover from a client, replies with DHCP Offer, then receives DHCP Request from a client.
...
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Wireless devices are detecting DHCP/DNS but Wired are not
I set up a server hosting AD, DNS, and DHCP. My wireless devices are successfully contacting the server and receiving an IP address, but my wired devices are not connecting. I have 2 virtual servers ...
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DHCP client not getting IPv4 address from a DHCP server
I configured a DHCP server on a VM in VirtualBox. This machine has 2 network adapters, enp0s3 - NAT (from where I have my network connection) and enp0s8 - Internal Network (intnet). DHCP server is ...
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DHCP Server Dynamically Updating DNS on Other Server (Both Windows 2012 R2, No AD)
We have had a single Windows Server 2012 R2 server (with no Active Directory) running DNS and DHCP for our main network for a good few months with dynamic DNS updates from DHCP working fine.
We have ...
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how dhcpd handles static IPs vs DHCP reservations
We have a RHEL 6.7 server for DHCP. I am needing some clarification on how dhcpd handles network addressing when someone wants a permanent IP address. Here is a sample config from one of our servers. ...
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Does a Windows host correctly interpret dnsmasq parameters?
I have a network of Windows 10 machines served (DNS and DHCP) by a dnsmasq instance on a Ubuntu server (Ubuntu 15.10, dnsmasq 2.75). The setup basically works (dnsmasq provides addresses and manages ...
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Windows Server 2012 Failover DHCP
I've been tasked with migrating from our current 50/50 scope resilient DHCP servers to new hot standby failover DHCP in Server 2012 R2.
Built a test bed with the two DHCP server VMs and created a ...
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2
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How to discard a DHCP request's old IP address (and provide a new one)?
I switched from a 192.168.0.0/24 network to 10.10.10.0/24. The addresses are provided by dnsmasq-dhcp.
The switch went fine for all devices but one - a printer (called PRINTER). This printer was ...
- 3,657
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DHCP issue with Cumulus and ESXi
So my switch has Cumulus Linux running on it and I have ESXi running in my network.
So my main network is on 172.22.0.0/24 which has my my esxi.
The networks I want esxi vms to run on is 172.22.20.0/...
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