L3 Agent

HA Routers

Networking DHCP agent

The OpenStack Networking (neutron) service has a scheduler that lets you run multiple agents across nodes. The DHCP agent can be natively highly available.

To configure the number of DHCP agents per network, modify the dhcp_agents_per_network parameter in the /etc/neutron/neutron.conf file. By default this is set to 1. To achieve high availability, assign more than one DHCP agent per network. For more information, see High-availability for DHCP.