IT Answers » DHCP

Chaning subnet scope in DHCP for wireless connections

mariusbui91 — Wed, 06 Mar 2013 16:11:21 +0000

New Answer by KevinBeaver

How to run a Wi-Fi router without NAT and DHCP

bing1351 — Thu, 07 Feb 2013 18:18:23 +0000

New Discussion Post by bing1351

DHCP Address Conflict Issue

792pakistan — Wed, 02 Jan 2013 10:35:45 +0000

New Discussion Post by TomLiotta

Networking

ronville — Sun, 30 Dec 2012 20:22:20 +0000

New Answer by Michael Tidmarsh

Any way to prevent IP conflicts by plugged in devices?

CorpJones — Tue, 06 Mar 2012 12:44:11 +0000

Hi Guys

We have a network with around 80devices, all PC’s are on DHCP however we have some people (mainly engineers) who sometimes come in and plug there laptops in however they forget sometimes they are on DHCP.

Question was is there any way to prevent this from happening? not sure if there are any special switches that would have this functionality or any other ideas…

I was thinking to configure DHCP so that it pings before assigning an IP address but will still not help in majority of cases as sometimes the laptops have the same IP as routers/servers and also some have already been handed out by DHCP..

Thanks!

2 Small Business Servers on one network using subnets

Sfishermade — Mon, 30 Jan 2012 21:08:43 +0000

I have a client that recently moved into a new office. He wants to setup a small business server. Unfortunately the small office he rents from has a SBS running on their existing setup. He’s currently pulling Internet from them and that’s all. He does not have his own ISP. One option being to get his own ISP. Is there a way to run his network within theirs using subnet? And to get full use of the small business server standard?

How does DHCP service start?

Xaphar — Fri, 30 Sep 2011 20:52:43 +0000

I have Windows XP with SP3.
When I check the service DHCP. It is automatic but stopped. When I start the service. It doesn’t. It shows error.
“Could not start the DHCP Client service on Local Computer. Error 1068: The Dependency service or group failed to start.”
Please help.

VLAN DHCP problem between Router and Switch

Sirexilon — Sun, 04 Sep 2011 19:16:45 +0000

I have a Cisco SA520 Router connected to a Netgear FS726TP Switch.
Router has 3 Vlans.

Management VLAN 1 /29

Hosts VLan 5 /27

VoIP Vlan 10 /27

Router Ports 1 and 2 are setup up identically, in Trunk Mode each port and all VLAN’s should be accessible through it.

Port 3 Vlan 5

Port 4 Vlan 10

Swithc is set like this

Vlan 1: Port 24 untagged, port 26 Tagged (Router)

Vlan 5: All ports Tagged

Vlan 10: Ports 1 to 12 Tagged and port 26 tagged port 24 tagged

PVID: Port all Ports VLAN 5

So I can get an IP from DHCP of vlan 1 conneted to port 24 on my management laptop, but I can’t get IP on hte other ports, I tried untagged or tagged and is the same. If I connect to the router on the port 3 or 4 I get an IP for each vlan.
I will set the Phones with Mac address on DHCP so they can take an IP from Vlan10 and the PC’s connected behind the phone will stay on Vlan 5
ANy ideas why I’m not getting DHCP replay behind the switch?

DHCP assigning IP – windows event

Atabani — Sun, 04 Sep 2011 07:27:51 +0000

Hello,

Is there a windows even generated by the DHCP each time an IP is assigned to a machine. I would like to trace which machine used which IP and when.

Thanks

Windows doesn’t obtain IP address automatically via DHCP

Xaphar — Sun, 28 Aug 2011 17:53:30 +0000

I have Windows XP with SP3. It doesn’t obtain IP address automatically via DHCP. I need to configure it manually. Please help.