DHCP (Dynamic Host Configuration Protocol) allows clients to automatically obtain network configuration, such as IP address, subnet mask, default gateway, and DNS configuration, from a DHCP server.
You can create DHCP servers to handle DHCP requests and create DHCP relay services to relay DHCP traffic to external DHCP servers. However, you should not configure a DHCP server on a logical switch and also configure a DHCP relay service on a router port that the same logical switch is connected to. In such a scenario, DHCP requests will only go to the DHCP relay service.
If you configure DHCP servers, to improve security, configure a DFW rule to allow traffic on UDP ports 67 and 68 only for valid DHCP server IP addresses.
|ANY||ANY||ports 67 and 68, TCP||ALLOW|
In this release, the DHCP server does not support guest VLAN tagging.