Dynamic Host Configuration Protocol; allows computers on the same network to automatically obtain unique IP addresses and other network configuration parameters.

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DLink 614+ Connect two LANs

I have a DI-Link 614 router. As WAN connection I have a LAN which has access to internet and I do not manage it. I have 2 computers (PC1, PC2) and 2 devices connected to the router. I have ...
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2answers
470 views

Can only ping on LAN, not internet

I have 2 computers running Ubuntu 12.04 connected to a router on the 192.168.3 subnet. This router is connected to another router via the first router's modem port, so the 192.168.3 router has access ...
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1answer
51 views

domain name in dhcp

My os is ubuntu and I use virtualbox and I have xp on that. now I want to set my ubuntu to dhcp server. So I downloaded isc-dhcp-server on ubuntu in configuration file i see these two line are not ...
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2answers
427 views

Re-assign IP address for VMWare image that is already running

I'm using VMWare Player. When an image running CentOS (Linux) 6.5 boots up, VMWare Player assigns an IP address dynamically (probably using DHCP) to that image. I'm assuming the IP address on the ...
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2answers
250 views

How do I get my devices to recognize the correct router and IP subnet?

The Basics Our home has a DSL line coming in to a modem on the second floor. A line then goes down to a switch/hub and through to our downstairs living room where a wireless router is set up. Up ...
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171 views

Internet slow down after Setting up Domain Controller on VM

I running Hyper-V on 12 computer and windows server 2012 on 1 computer. I set up 2 Virtual machine Domain Controller on 2 separate computer. The second one is just a failover read only DC. My whole ...
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2answers
134 views

How can i keep an entry in my routing table, even when the associated interface goes down?

I have a linux box set up as my internet router. I have the eth0 interface connected to the lan, and the eth1 interface connected to a pppoa modem and configured with dhcp to my public ip. Due to ...
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1answer
174 views

Static route set from dhcp

Does anyone know if it is possible to add static routes with dhcp? I know that there is option 121 in dhcp but I read that it can set routing via some gateway IP, and I need to set routing via device. ...
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3answers
6k views

Check if a DHCP server existing in my network using bash

using CentOS with static IP, Is there any way to determinate if a DHCP server running on the network using bash ?
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23 views

Additional ip addresses along dhcp

On windows it seems possible to add arbitrary ip addresses on the interface, but as soon as you add one, the addresses obtained with DHCP is removed. Is it possible to set static ip addresses while ...
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0answers
54 views

dhcp no lease because of not-DAD mode

My virtual machine does not receive an IP lease anymore. Manually requesting a new ip lease by 'ifdown/ifup eth0' or 'dhclient eth0' or 'service network restart' don't work either. The error is ...
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554 views

IP attributed with Microsoft Virtual Wifi Miniport Adapter

I created a "Wireless Hosted Network" using this very helpful command : netsh wlan set hostednetwork mode=allow ssid=YourVirtualNetworkName key=YourNetworkPassword (It is a very interesting ...
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2answers
788 views

Can a DHCP router with MAC address whitelist be hacked with a VM?

I locked down my whole network’s MAC addresses so that only CPU’s on the whitelist can get an IP from the AirPort Extreme DHCP server and router. Well, guess what. A Mavericks VM with a completely ...
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2answers
127 views

DHCP server which only configures default gateway

I have static ip's assigned to my machines, but no default routes. I want to send only the default gateways via a dhcp server. Is that possible?
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1answer
431 views

dhcpcd overwrites NetworkManager's /etc/resolv.conf

I have an Archlinux machine. The IP is set to a fixed value, configured via the NetworkManager. When I tell the NetworkManager to connect with this configuration it successfully updates my ...
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1answer
397 views

ZyWall USG 200 assigning many IPs to one device

Running a network behind a ZyWall USG 200. Our subnet has around 100-110 devices connected at any particular time. Recently some users were having trouble with getting a DHCP address (keep getting ...
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1answer
66 views

Static DHCP with Century Link Modem

I'm currently attempting to change my IP address with my modem provided by my ISP (Centurylink). I was told because of the service I have, they use Dynamic IPs with indefinite lease time, and that ...
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0answers
101 views

why the ping doesn't get a reply?

I have an embedded board that has the CFE, a minimal loader. I have a host machine - linux FC16, where I am running a dhcpd server. My interface is p3p1. Here are the details of the ifcfg-p3p1. ...
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3answers
495 views

How to find the IP address of a router

I live in a dorm where many students have setup small wireless networks. There are two of this networks that are very close to my room as the signal is very strong. Our college uses DHCP to assign IP ...
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1answer
255 views

How to setup the DHCP server?

I am new to networking. I have a FC16 machine that has two network interfaces em1 and p3p1. The em1 is connected to the outside world. The p3p1 is the interface that I want to connect to my embedded ...
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0answers
409 views

Using DHCP to get multiple IP addresses on single NIC on RedHat

I am trying to obtain multiple IP addresses using the ISC dhclient supplied with Red Hat Enterprise Linux 5 in order to provide the IPs to multiple applications, which will run on separate virtual ...
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0answers
151 views

Relinux Live CD - waiting for network configuration

I installed ubuntu 12.04 base system via minimal ubuntu iso. I make a script to get hostname from dhcp server which explained here. It works perfect. I don't install network manager because I dont ...
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0answers
517 views

Windows 7: can I renew DHCP lease through GUI?

In Windows XP, there was a GUI option within each network interface to renew the DHCP lease of the interface. Does Windows 7 Professional no longer offer a GUI to renew DHCP? Else, how and where do ...
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1answer
216 views

How to get host-name from DHCP server via Network Manager?

I can get hostname and ip address from DHCP server with invoking the script under /etc/dhcp/dhclient-exit-hooks.d/ directory as explained here on client side . But it stopped after installed network ...
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2answers
173 views

How to know default gateway without dhcp

Sometimes i use some wifi, maybe in public places or hotels. Sometimes they do not have DHCP Server on they router, and they do not provide LAN IP Settings, and maybe they also DO NOT KNOW what LAN ...
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0answers
155 views

Network Instable Connection over LAN, Airport Express works

I just got a cubox-i4 but have a big problem with the LAN connection. It establishes and crashes again. The thing is, that if I connect it via LAN to an Airport Express (connected via wifi), the ...
2
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1answer
98 views

Is it possible to use DHCP to obtain default gateway and DNS server only?

I have a few VMs which I want to keep with static IP addresses. However, I run those on my laptop and frequently connect to different networks which use different default gateway and different DNS ...
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1answer
26 views

Server 2008 DHCP on a wireless adapter

We have a Server 2008 (x86) computer which acts as a server, also as a router to share Internet into multiple network segments with RRAS. Everything works fine except DHCP on a wireless adapter with ...
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2answers
181 views

With a MAC-DHCP binding at the router, do I configure the client as static?

I'm working on setting up a home web/file server together with a new-to-me Cisco router. This router does not support setting ip addresses on the interfaces, because of some peculiarities (its a ...
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0answers
1k views

Dnsmasq running on raspberry pi will serve non-local DNS to ethernet but not wireless hosts

I have a Linksys WRV200 wireless router. I have just added a raspberry pi, connected via ethernet, working as a DCHP server and caching DNS server. Dnsmasq also serves local domain names. Dnsmasq ...
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2answers
762 views

How to use the internet modem DHCP on a LAN created by wireless router?

My home network description: [Laptop] -> [Wireless Router] -> [Internet Modem] -> [Internet] Sorry if I'll say something noob I'm not a professional on networking. I have a LAN created by ...
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1answer
62 views

How can I point a domain at a changing IP?

So I'm running a website off my own server. I piggybacked off my dad's domain; I added subdomain, evamsharma.finosus.com, and pointed to our network IP, and set up port forwarding. But when I logged ...
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2answers
1k views

How to configure the network interface with a dynamic range of IP addresses?

I am new to networking, so please bear with me. I have two network interfaces. One network interface is connected to the external world. Another network interface 'p3p1' is what I want to use for ...
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0answers
863 views

iPhone self-assigning IP address 169.xxx.xxx when connecting to my slave router

My aim is to have a network configured where all devices can see and communicate with each other, all devices should have access to the internet as standard. The reason why I have decided on a ...
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1answer
250 views

Use a combination router/modem as a slave to another router

I've got a combination cable modem/router from my cable company. I've also got a Netgear N900 that I love. I'd like to use the advanced features of the N900 (partitioning, guest networks, print ...
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0answers
863 views

DHCP option to control interface metric

For some reason Windows is using only one interface for local network broadcasting (the one with lowest metrics). When client connects to VPN network, i want it to make new network preferred for ...
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1answer
1k views

How to load test a DHCP Server? [closed]

I basically want to test how many client requests my DHCP server can handle.Is there a simulator available to load test a DHCP server running on Ubuntu 12.10?
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1answer
199 views

Connecting 2 networks together via router

I have a small size business where we have around 22 PCs. At present, I have the internet connected directly to a switch1 (We use dedicated leased line and I have been provided with 5 static IPs by ...
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1answer
279 views

DHCP Pool Range / IP-Camera Setup

Lately I have been trying to set up a IP-Camera for friends wirelessly. I realized on their router its DHCP pool range is from 192.169.2.100 - 192.168.2.200. But when I changed the IP address of the ...
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1answer
777 views

How to force a new DHCP discover

I'm analysing my network traffic at home, and I want to force my Mac to completely renew its DHCP stuff. Renewing my DHCP lease only reveals two DHCP packets sent over my interface, but I want to see ...
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2answers
2k views

Two network-ranges, one gateway - Double NAT issue

I have one network 192.168.0.x which is slowly running out of IP addresses. I wanted to remedy this by creating a second network for mobile devices (192.168.1.x). The first network has a gateway of ...
0
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1answer
35 views

How could I diagnose a computer (INTEL board with FreeBSD) that does want to acquire a DHCP address?

I have a system that comprises 3 logic boards with 3 different CPUs (3 computers in one systems). They are all attached to a router that is connected to a wifi bridge. Of these 3 boards, only 2 ...
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2answers
3k views

Getting strange IP Address from router

I've had a router set up for quite some time and it has been working perfectly. My wife called me to tell me the wireless internet wasn't working and when I came home I saw that my phone was connected ...
0
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1answer
221 views

DHCP fallback based on /etc/hosts lookup of your hostname

I have a Kubuntu box (12.04) which usually gets its IP via DHCP. However, it also has a hosts file with some entries in case the DHCP+DNS server fails. Now, if there is no DHCP available, I want the ...
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1answer
378 views

Dynamic DNS for RPi -> Airport Extreme (DHCP) -> Cable Modem (DHCP) -> Interwebs

I have a Raspberry Pi which connects to my Airport Extreme via DHCP. The Airport is connected to my Cable Modem which gets its IP address via DHCP from Comcast. I would like to be able to address the ...
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1answer
3k views

“RPC is unavailable ” while renewing IP address or connecting to broadband over ethernet

I already looked for solutions on internet and on this forum but it did not help so posting a new question. I have windows 7 Professional and i connect to broadband via ethernet (always on). When i ...
3
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1answer
751 views

Why does my (home) router append a DNS suffix?

I wonder if any other people have come across this. I've rented rooms in two houses this year, and they both have Sky (a UK ISP) Broadband routers. For some reason, the router I currently use hands ...
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405 views

Network resource access control (maybe using VLANs?)

I'm trying to set up a network that has a couple of different device groups with different access rights. Physically, devices are connected to the network either via wall-ports or via one of several ...
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3answers
202 views

Why will my wireless router allow wired clients to get an address outside the router, but not wireless ones?

I have a "main" router that connects to the internet, and then a wireless router that connects to that. The main router's DHCP is disabled, and a computer hooked to that has a DHCP server running ...
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1answer
59 views

Detecting active devices on LAN from Debian based server

Simply: How can i detect if there are any active devices on lan? More details: I have home server which acts as Internet gateway and wifi access point. Because of server part of its configuration i ...