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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Windows Server 2012 r2 DHCP not serving addresses

Yesterday I encoutered a DHCP problem. After windows update and restart, my dhcp won't serve any new IP addresses. The ones wich has been sent before are working but no new IP-s. I tried restarting ...
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1answer
17 views

Use static IP on home network else use DHCP

How can I setup Windows (10) so that it has a static IP address on my home network and otherwise use DHCP?
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10 views

Unable to receive IP from DHCP when using ICS on Local Area Connection

The computer fails to get the IP from DHCP when I set internet connection sharing in on. (The network reads "Unidentified Network".) I have to manually turn it off and then connect again to get an IP ...
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0answers
12 views

DD-WRT block requests from static-addressed computers

Hello i have a litle problem. I have moved into two floors house and need to use repeater. My network structure is linke on this picture: There are two routers, R1 (upper) is any D-LINK with ...
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1answer
41 views

Will a router's DHCP/ARP table show a network switch?

My network setup: wan > pfsense router > switch > unifi AP Well I just got the switch. Brand new. I'm trying to set it up, but it's showing two IP addresses. The switch config utility says "IP ...
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0answers
5 views

Hardcoding dns adresses in dependance to network

I would like to save permanently dns addresses. According to link I added in /etc/dhcp/dhclient.conf proper line and in my home network everything works great. Problem is that when I am at my ...
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1answer
36 views

On Debian jessie, can I specify which dhcp client is used for a particular interface?

I use the /etc/network/interfaces file on Debian to configure my network interfaces with DHCP. The relevant section looks like this: allow-hotplug eth0 iface eth0 inet dhcp allow-hotplug eth1 iface ...
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1answer
31 views

My access point router stopped connecting to the internet at the stroke of midnight and now I can't seem to bring it back

Today I purchased an Archer C8 to setup an access point across the building that I am currently living in. I followed the steps from this article (http://www.tested.com/tech/298-how-to-use-an-old-...
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11 views

VLAN - Tagging Query

I have a netgear switch and the following configuration is working. VLAN ID PORTS 1 1 2 3 4 5 6 7 8 10 1 2 3       7 8 20     3 4 5     8 Each port is untagged in ...
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24 views

Router won't re-offer DHCP

Wondering if this "as designed" or a bug in my netgear router. I have an AP connected to the router (via EoP) If i connect to the router SSID, get an IP then disconnect and connect to the AP SSID I ...
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1answer
48 views

Only 2 Clients connected, yet router shows 4 IP addresses in the DHCP list

There are at present 2 devices connected to my home WiFi network, my laptop and my Raspberry Pi. The MAC address table on my router configuration page shows 2 clients connected but my DHCP client list ...
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1answer
23 views

Ubuntu Server gets kicked off LAN periodically / when another device joins LAN

I'm running into an issue with my newly created Ubuntu server. Full Disclosure: I'm pretty new to both networking and Ubuntu, so I may have missed any basic setup step that would address this problem....
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1answer
196 views

OpenWRT Chaos Calmer 15.05 DNS forwarding, custom DNS Server, DHCP option - nothing works

Okay, so essentially I'm trying to only forward one very specific address over one of those geo unblock dns proxy services. Namely Pandora.com. Don't judge, I like their raido stations better than ...
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0answers
37 views

Why is dhclient ignoring dhclient.conf?

I have the following problem I want to solve: I have multi homed system running linux, with three interfaces. All interfaces are configured by dhcp. The DHCP client is ISC dhcp 4.2.5 The DHCP server ...
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1answer
49 views

DHCP Requests leaking through VPN

I have a spread-out setup to deal with: 3 off-site buildings with Tomato Firmware-based routers, connecting to another Tomato-based router as a VPN setup. The Server router is also in our private LAN ...
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0answers
19 views

two interfaces conflict when running two instances of CherryPy

I am running small database website on CherryPy (legacy, not mine codebase) for our lab at The University. We had production host and CherryPy instance (database.uni.edu, mapped to static IP xxx.xxx....
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1answer
29 views

What IP address do I assign in order to keep communication between my AP and my router?

My network setup: WAN > Router(pfsense) > AP(tomato) The gateway for my router is 10.12.1.1 The gateway for my AP is 10.12.1.201 My AP is only an AP, not a DHCP server. The router is my DHCP ...
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1answer
42 views

Manage DHCP on windows server from computer outside domain

I am trying to manage a DHCP server running on Windows Server 2008r2 from a computer that is not in my active directory domain. I currently get the error: This call was performed by a client who is ...
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1answer
55 views

How to configure DHCP on router to manually define the routing table distributed to users?

I have a router in my home, to which there are several devices connected to it (over Wi-Fi and Ethernet) and get the network information through DHCP. I want to configure the protocol, so I can ...
4
votes
1answer
35 views

Browser autostarts when ethernet is connected. How?

I plugged my Windows 10 laptop into a router from our new isp. We only got the fibre, no services set up yet (The fibre can carry phones, tv and internet) Immediately when I plugged the cable in, the ...
2
votes
2answers
59 views

Want to know the local IP address assigned to me by my ISP

I use a TP-Link router (3420) to connect to my ISP. My local IP address is 192.168.0.22. The ISP uses DHCP and the router shows the range of it 10.19.xxx.xxx. Sites like whatismyip.com show the ...
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22 views

DHCP-Enabled Router Sometimes Won't Talk to Host with Static IP

I have a Windows 7 host connected to a router running DD-WRT. The router is running a DHCP server. For reasons I don't need to detail here, I have set a static IP on the host, as opposed to ...
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1answer
23 views

ADSL router - public IP for local network

Today I went to my friend and took a look at his PC. He has ADSL router ZTE ZXDSLl 831cii. So there is a telephone line to router and PC is connected to Lan1 of the router (there are also Lan2, Lan3, ...
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2answers
62 views

How many routers do I need to support 3 vlans over a single ethernet connection

I have multiple rooms each with a single ethernet cable and will have a switch in each room connected to an AP for wireless access on 192.168.?, a teacher workstation on 192.168.2 and one or more ...
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1answer
50 views

How to troubleshoot a networked device with incorrect static IP address?

I have a Sony SNC-EP521 IP camera that's currently set to a static IP address of something like 10.0.0.x (if I remember correctly). The network I'm trying to place it in has IP addresses like 192.168....
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2answers
21 views

DHCP categorise IP leases

I would make a major upgrade in my home network environment. I have a dlink 655 router. On this router All the DHCP will be happening. Also I will have 3 additional APs. I would like somehow to ...
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1answer
28 views

Source of internet wireless: Mask connected devices behind router/device

Which device/router do I need to use not an ethernet cable as source of internet but a wireless connection. I want to connect to a (different) wireless network without it knowing how much or which ...
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4answers
62 views

Unable to access router home page

I am Unable to ping router at 192.168.10.1 I want to access the router to change wireless security passphrase Why I am not able to access with web browser? Machine Details: Win7, IP: 192.168.10....
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1answer
23 views

How to add the following range in my Windows 2012 DHCP Server?

How to add the following range in my Windows 2012 DHCP Server? 192.168.1.0/24 192.168.1.248 192.168.11.0/24 192.168.11.1 192.168.12.0/24 192.168.12.1 192.168.13.0/24 192.168.13.1 192....
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1answer
64 views

How to set (reset) PXE binary filename in pfsense?

I am trying to load lpxelinux.0 instead of pxelinux.0 in pfSense, and configured it in default bios filename setting: Unfortunately, server still sends pxelinux.0 as a filename: How to fix? How ...
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1answer
1k views

How can all the routers remember my leased IP? Shouldn't it change if I connect to a different router?

If i have understood this correctly. The DHCP server will lease you an IP address, when you first connect to let's say a school network. If I move from the 8th floor to the 2nd floor, then I'll most ...
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0answers
16 views

automatic decision whether to be a DHCP server or client

Can a computer send DHCP request and if there is no answer became a DHCP server? My use case: I have new raspberry pi. I would like to show it to friends connect it in friend's house, in school, ...
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1answer
115 views

Why isn't my DHCP server working?

I am trying to setup a DHCP sever with my Raspberry pi, but the service isc-dhcp-server cannot be restarted. Why isn't the service being restarted? ifconfig eth0 Link encap:Ethernet HWaddr X ...
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1answer
92 views

Connecting two routers (lan-wan) and homegroup sharing?

First of all i wanna say to you that i already connected the routers (LAN-TO-WAN) ... But i have issues and questions :) ... My primary router and my secondary router both also using DHCP... why? ...
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0answers
36 views

IP release and renew return the same IP on a new LAN with different IP scheme

Something strange I've encountered for the first time. Windows 7 PC was movied from one LAN to another and still kept getting the same IP address from DHCP as it did at old LAN location. For example, ...
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1answer
35 views

Requesting a new IP from the DHCP

In Linux, if I want to request a new IP say, for eth0, what commands should I use? Basically, how do I request a different IP from the DHCP so that it replaces my current one?
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1answer
18 views

How to correctly describe a small network running multiple DHCP

I have a home network with multiple devices connected to a central router. I have limited ability to change the core of this network (ie mess with the router, put additional cabling in - joys of ...
0
votes
1answer
34 views

Exclude mac address from home router dhcp (tp-link wd8961)

Is there any chance to configure a home router (tp-link wd8961) to exclude a specific MAC address from getting an IP-address via DHCP? I looked through all settings in the admin UI and through the ...
0
votes
1answer
41 views

Alternative for bridge mode

Up until now, I have been managing my own private network by setting my ISP's modem to bridge mode. However, recently I switched my ISP and now I received a modem with rather limited options. I can ...
0
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1answer
635 views

Archer C7 AC1750 Bridge Mode

I have an Archer C7 AC1750 wireless router which is great but I can't enable bridge mode through my modem, so I need the Archer's DHCP service to be disabled and pass the DHCP from my modem through a ...
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0answers
35 views

Hostname won't resolve after setting up new server

I just completed a fresh install of Centos 7 on a PC. It is connected to the campus network, so I am not in control of the DNS server. I gave it a hostname by setting the HOSTNAME value in /etc/...
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1answer
62 views

Roaming through AP lose contact with part of the network

I hope you can help me with a problem bothering me for long now. I have a small home network with two routers. Both broadcast a same SSID, router/modem "1" in channel 6, router "2" in channel 1 (see ...
0
votes
2answers
397 views

How to assign a reserved IP address on Fortigate 60C

I'm trying to bind mac to ip on FortiWiFi 60C v5.2.6,build711 gw # config system dhcp reserved-address command parse error before 'reserved-address' Command fail. Return code 1 any idea why it ...
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0answers
50 views

Debian 8.1. Needs restart eth0 iface to get connection

I have a strange problem with connection to Internet in my Debian 8.1. I change content file /etc/network/interfaces to iface lo inet loopback auto eth0 iface eth0 inet dhcp Now if I restart system ...
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1answer
34 views

Can anyone please explain usage of few settings in my Dlink Adsl modem+router?

The router is Dlink 2730U. The documentation doesn't list the usage and function. DHCP server settings list both Lan and wan ports... please see pic Not sure, how WAN ports are used in DHCP? ...
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1answer
42 views

Distinguish between DNS-requests from local network and internet

I am using DNSmasq both for my local clients and some internet services. One service I provide is a dynDNS server. It receives IP updates via HTTP and writes it as simple hosts file but without domain....
1
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1answer
31 views

Trying to find & get a fixed DNS?

I'm trying to find our DNS details to specify in our printer so it can send scan docs to email. Running a cmd prompt is showing details starting with fe80::c6ea: instead of a proper DNS address. Any ...
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0answers
56 views

How to set up 10 routers to form one wireless network? [closed]

So we have set up 10 routers to form one big wireless network with 1 SSID. This network has many issues. Devices are working one day, and the other day they are offline for no reason. Some devices ...
0
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1answer
86 views

How to use my own router as DHCP server when ISP modem router does not support bridge?

I'm currently using a GPON router (ZTE F660) from my ISP. I'm planning to purchase TP-LINK N600 TL-WDR3600 as secondary router and use that instead for my LAN and WLAN because the GPON router (main ...
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1answer
43 views

A br0 bridge interface appeared and mess up my network config

Problem This afternoon, I launched my openSUSE Leap 42.1 like everyday and then I quickly note that my networking was'nt working correctly. A quick ifconfig show me that a new br0 interface show up. ...