Configuración de DHCP en NSX (EN)
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27.02.2023 
Cloud / VMware
Objective
Learn how to configure a DHCP server in a segment
OVHcloud provides services for which you are responsible, with regard to their configuration and management. It is therefore your responsibility to ensure that they work properly.
This guide is designed to assist you as much as possible with common tasks. However, we recommend contacting a specialist provider if you experience any difficulties or doubts when it comes to managing, using or setting up a service on a server.
Requirements
- Being an administrative contact of your Hosted Private Cloud infrastructure to receive login credentials
- A user account with access to the OVHcloud Control Panel
- Having NSX deployed with two overlay and VLAN segments configured in your NSX configuration. Use our guide on segment management in NSX for more information.
Instructions
We will configure DHCP for :
- An overlay segment behind the gateway ovh-T1-gw
- A segment on a VLAN connected to the gateway ovh-T1-gw.
Common DHCP configuration for all overlay segments
First we will create a DCHP server common to all segments in Overlay.
Through the NSX interface, go to the Networking tab and click on Networking Profiles on the left in the Settings section. Then go to the DHCP tab and click ADD DHCP PROFILE.
Type Name in Name and click SAVE.
The DCHP server is active, it uses a network in 100.96.0.1/30, do not use this network in one of your segments.
DHCP assignment to the ovh-T1-gw gateway
In the Networking tab, click on Tier-1-Gateways on the left in the Connectivity section.
Click the three vertical dots and choose Edit from the menu.
Click Set DHCP Configuration.
Choose DHCP Server from Type and your DHCP profile from DHCP Server Profile. Then click SAVE.
Click SAVE.
Click CLOSE EDITING.
Setting up DHCP on an Overlay segment
From the NSX interface, go to the Networking tab and click on Segments on the left in the Connectivity section.
Go to the Segments section, click on the configuration icon indicated with three vertical dots to the left of your segment and choose Edit.
Click Set DHCP CONFIG.
Fill in this information :
- DHCP Type : Leave
DHCP Server Gateway. - DHCP Ranges : Enter your range
192.168.1.10-192.168.1.200. - DNS Servers : Add OVHcloud DNS server
213.186.33.99.
Click on APPLY.
Click SAVE.
Click CLOSE EDITING.
Virtual machines in this segment can now be configured with DHCP.
Setting up DCHP on a VLAN segment
On a VLAN segment it is not possible to use the profile created for Overlay segments.
In order to have a DHCP server on this segment, we will create a DHCP configuration with a new profile directly attached to the segment.
If you do not have a VLAN type segment, use the Segment Management in NSX guide to create it with these settings :
- VLAN Subnet: 192.168.100.0/24.
- Gateway and interface IP address : 192.168.100.254/24.
Go to the Networking tab, click on Segments on the left in the Connectivity section, then click on the three vertical dots on the left of your VLAN segment and choose Edit from the menu.
Click SET DHCP CONFIG.
Leave Local DHCP Server in DHCP Type, click the three vertical dots to the right of DHCP Profile and choose Create New from the menu.
Enter this information :
- Name: Leave
DHCP-VLAN100. - Server IP Address : IP address of DHCP server
192.168.100.253/24.
Then select your Edge Cluster and click SAVE.
Verify in DHCP Profile that the profile is present and enter this information :
- DHCP Server : DHCP server address
192.168.100.253/24. - DHCP Ranges : DHCP Server range
192.168.100.10-192.168.100.200. - DNS Servers : OVHcloud DNS server IP address
213.186.33.99.
Then click APPLY.
Click SAVE.
Click CLOSE EDITING.
The DHCP server is active on this VLAN segment.
Go further
If you need training or technical assistance to implement our solutions, contact your sales representative or click on this link to get a quote and ask our Professional Services experts for a custom analysis of your project.
Join our community of users on https://community.ovh.com/en/.
Administración de segmentos en NSX (EN)
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