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Table of Contents

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Admin Guide 1. Abiquo: Auto. 1 DHCP Relay

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Table of Contents

This section will guide you through the required steps to install the Abiquo DHCP relay server using the Abiquo Installer ISO.

Example Values

This install guide uses the following example values.

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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 VM 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

Tags

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.

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    Example:
	Dhcrelay server IP: 192.168.1.2
    DHCP Server IP: 192.168.1.1
    Dhcrelay is connected to the DHCP server through eth0 (management network)
    Dhcrelay is connected to VLANs through eth1 (service network)
    Dhcrelay manages VLAN range 2-200
    Network for relay service interface is: 10.0.0.0

Prerequisites for DHCP

Please read the background information on Configuring DHCP and How Abiquo Networking Works before you begin. The DHCP relay server should have two network interfaces. One of the network interfaces should be connected to the service network and the other to the management network. 

System Requirements

ServerDHCP Relay Server
Recommended
test server specifications
  • CentOS 6.5 (Linux 2.6 x64)
  • 1 x vCPU
  • 2 GB RAM
  • 50 GB Disk
  • 2 x E1000 NIC
Hypervisor networks

Install the Abiquo DHCP Relay Server on a hypervisor with VLAN support configured. For example, for ESXi, see How to configure an ESXi host to support VLAN tagging

Platform networks

Connect the Abiquo DHCP Relay Server to these platform networks:

  • Management network
  • Service network (DHCP) with switch ports in trunk mode

Install Abiquo DHCP Relay Appliance

The Abiquo DHCP Relay Appliance is a CentOS system containing the Abiquo DHCP Relay Server. 

Download Abiquo DHCP Relay Appliance

Download Abiquo DHCP Relay Appliance

  • OVA file: 
  • MD5 sum:
Configure virtual machine
DescriptionDefault Configuration
Guest OS TypeRed Hat (64 bit)
CPU2
RAM4096 MB
Network adapterIntel PRO/1000 MT Server
Hard Disk Controller (SCSI)LsiLogic
Virtual Disk Imagedhcp-relay_34_vmware-disk1.vmdk.gz
Virtual Disk Image Capacity9.77 GB
Configure DHCP Relay Server


In our example, these parameters areSo for this example, we would enter the following parameters:

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Management Interface: eth0
Service Interface: eth1
DHCP Server IP: 192.168.1.1
Service Network: 10.0.0.0
VLAN Range: 2 - 100200

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Troubleshooting

To better understand the installation and configuration process, please see How Abiquo Networking Works.

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For troubleshooting purposes, see documents about manually configuring DHCP relay servers. To use multiple relay servers, see Manually configuring multiple DHCP relay servers.