3
votes
2answers
140 views

Assign fixed IP address via DHCP by DNS lookup

Preface I'm building a virtualization environment with Ubuntu 14.04 and LXC. I don't want to write my own template since the upgrade from 12.04 to 14.04 has shown that backwards compatibility is not ...
0
votes
2answers
93 views

Superscope DHCP leases and configuration set up

Hello I wanted to see if someone could help with a network problem I am having. Right now we have a super-scope and scopes of 192.168.50.1 and 192.168.51.1, as of now both are activated but only ...
3
votes
0answers
81 views

ISC DHCPD memory leak solutions and or workarounds

Background: I have recently been put in charge of finding the root of and/or fixing a memory leak with an ISC DHCPD (4.2.5-P1) installation on a Debian (Lenny) Unix server. I have been researching ...
0
votes
0answers
10 views

ubuntu not restarting after uninstalling dhcp3 client

I have uninstalled dhcp3-client using the command aptitude remove dhcp3-client dhcp3 common And I restart the ubnutu. But the box is not coming up. It has become a big problem now as i have lots ...
-1
votes
1answer
80 views

Create separate Network for testing purpose [closed]

I have installed Windows Server 2012 on a VM (ESXi) for testing/learning purpose and I also like to install DHCP Server as well but this will conflict with my ISP router and I don't want to disable ...
1
vote
1answer
121 views

DHCP Server Issuing NAK when servicing multiple subnets

We currently have 3 VLANs setup in our network. On our DHCP server (Windows 2008) we have 3 scopes created for the 3 separate subnets. Our clients can't seem to pull addresses on the subnets, except ...
1
vote
2answers
175 views

IP Address shortage/Subnetting

Facing a problem where we are running out of available network addreses, we are currently on bog standard 192.168.1.x range. Reading about making more ips available and subnets and think i have just ...
1
vote
1answer
128 views

Command Equivalent to Reseating a Network Cable

I'm remotely accessing a network where I'm testing two separate dhcp servers where: 1) Both dhcp servers are on the same subnet. 2) The dhcp servers do not have overlapping ip pools. 3) Each dhcp ...
0
votes
1answer
546 views

VSphere 5.1 DHCP Server VM routing

I am trying to setup the routing for a VM that is my firewall/dhcp server. I have 3 VMs: router/firewall (centOS) -> VM1 unRAID(unraid) -> VM2 download-server(ubuntu server) -> VM3 2 NICs vmnic0 ...
2
votes
1answer
48 views

Changing DHCPv6 server

I have a DHCPv6 daemon that is answering for requests of some machines and everything is working fine. So I decided to remove this DHCPv6 daemon e start another daemon on another server, but the ...
1
vote
2answers
363 views

dhcpd pool exhaustion - What's the result?

I have a DHCP server that serves leases to several houndred, maybe up to a thousand, different clients on an average day. The pool consists of 242 IPs, and due to the highly dynamic nature of the ...
4
votes
4answers
10k views

Force the DHCP server to renew the IP address of a client machine, without doing anything in client machine

I would like to know, if there is a way I could force the DHCP server to renew the IP address of a client machine instantly, without me going to the client machine? In fact, imagine, I don't have ...
0
votes
1answer
967 views

Ubuntu Server 12.04 ISC-DHCP-Server not working using standard configuration

I have been trying to configure the isc-dhcp-server package to assign ip addresses to devices connected to my eth1 adapter. Current Configuration interfaces: auto lo iface lo inet loopback auto ...
1
vote
1answer
103 views

Windows Server 2008 DHCPv6 Role only providing IPv6 address to Windows DHCPv6 clients?

Testing a Windows Server 2008 Enterprise SP2 server with a DHCPv6 server role configured. The Scope for the IPv6 range is 2001:db8:0:1::, there is only one exclusion and that is 2001:db8:0:1::1 and ...
2
votes
2answers
276 views

Multiple DHCP servers available to virtual networks in VMware - how to set priority?

In a VMware ESXi 4.1 lab environment*, I have a pair of virtual networks configured (10.0.4.x and 10.0.10.x). On both networks is a DHCP server. The problem is that the networks are routable to each ...
1
vote
4answers
480 views

DHCP scope size to number of DHCP hosts ratio

Is a DCHP scope range of x.x.x.100 to x.x.x.200 large enough for 65 dynamic hosts? I manage a small windows domain which has grown some. We now have 65 hosts using a DHCP scope range of 100 ip ...
0
votes
1answer
437 views

How do I setup Ubuntu interfaces so one interface is “mapped” to another?

I have recently setup a DHCP-Server on an Ubuntu 10.04 server machine. The machine has two interfaces (eth0, eth1). I have the DHCP server setup correctly because computers connecting to the network ...
3
votes
4answers
644 views

Resolving IP Address Conflicts in LAN

We have our lan setup with DHCPD providing fixed IP addresses to the systems. However we are facing IP conflicts if some one connects a laptop and assigns an IP address belonging to another system. ...
0
votes
2answers
119 views

Can I just drop in a new DHCP server in place of my old one without breaking everything?

Right now, in my office, we have a Cradlepoint MBR1000 wireless router as our DHCP server. It's not as configurable as I'd like for it to be, and I need to set up a VPN, so I am considering replacing ...