Automatically Configuring One DHCP Relay Server

To install a DHCP Relay server, download the Abiquo appliance (OVA file) and load the appliance on a hypervisor with VLAN support, such as VMware ESXi or Red Hat KVM.

The server requires two network interfaces. One of the network interfaces will be connected to the service network and the other to the management network. The virtual machine specifications are approximately as follows.

Description	Default Configuration
Guest OS Type	Red Hat (64 bit)
CPU	2
RAM	4096 MB
Network adapter	Intel PRO/1000 MT Server
Hard Disk Controller (SCSI)	LsiLogic
Virtual Disk Image	dhcp-relay_XX_vmware-diskX.vmdk.gz
Virtual Disk Image Capacity	9.77 GB

To configure the DHCP relay server, you will need to know the following parameters.

Component	Example value	Notes
Dhcrelay server IP address	192.168.1.2	This should be an IP address on the management network with the Abiquo platform servers.
DHCP Server IP address	192.168.1.1	This should be an IP address on the management network with the Abiquo platform servers
Dhcrelay management network interface	eth0	Connection to DHCP server on the management network
Dhcrelay service network interface	eth1	Connection to VLANs, which is a trunk connection on the service network.
VLAN range	2-200	Server will manage these tags that will be allocated to the VLAN networks
Network for relay service interface	10.0.0.0	The DHCP Relay will listen to VLANs using VNICs with this IP range. Note that there must be one IP address for each VLAN but the IP address is only used by the DHCP Server to identify the VLAN. You can use any network address that ends in 0.

So for this example, we would enter the following parameters:

Management Interface: eth0
Service Interface: eth1
DHCP Server IP: 192.168.1.1
Service Network: 10.0.0.0
VLAN Range: 2 - 200

For troubleshooting purposes, see /wiki/spaces/ABI54/pages/310740123. If you wish to use multiple relay servers, also see /wiki/spaces/ABI54/pages/310740431.