This chapter groups the concepts, tasks, and reference material required to implement Dynamic Host Configuration Protocol (DHCP) on the Cisco 8000 Series Router.
Introduction to DHCP relay
This topic describes the DHCP relay agent on the Cisco 8000 Series Router, which forwards DHCP packets between clients and servers that do not reside on a shared physical subnet.
How DHCP relay works
This topic describes how a DHCP relay agent forwards a DHCP client broadcast to a DHCP server on another network segment on the Cisco 8000 Series Router.
Prerequisites for DHCP relay agent
This topic lists the prerequisites for configuring a DHCP relay agent on the Cisco 8000 Series Router.
Limitations for DHCP relay
This topic lists the limitations that apply to the DHCP relay feature on the Cisco 8000 Series Router.
Configure the DHCP relay agent
This topic describes how to configure and enable the DHCP relay agent on the Cisco 8000 Series Router.
Enable a DHCP relay agent on an interface
This topic describes how to enable the Cisco IOS XR DHCP relay agent on an interface on the Cisco 8000 Series Router.
Disable DHCP relay on an interface
This topic describes how to disable DHCP relay on an interface on the Cisco 8000 Series Router by using the no keyword.
Configure and enable the DHCP relay agent with MAC address verification
This topic describes how to configure and enable the DHCP relay agent with DHCP MAC address verification on the Cisco 8000 Series Router.
Configure the DHCPv6 stateless relay agent
This topic describes how to configure the DHCPv6 stateless relay agent on the Cisco 8000 Series Router by specifying a destination address for client messages and enabling DHCP IPv6 relay service on the interface.
Enable DHCP relay on a VRF
This topic describes how to enable DHCP relay on a VRF on the Cisco 8000 Series Router.
Configure a DHCP relay profile with multiple helper addresses
This topic describes how to configure a DHCP relay profile with multiple helper addresses on the Cisco 8000 Series Router. You can configure up to 16 IPv4 and IPv6 helper addresses for a DHCPv4 or DHCPv6 relay profile.
DHCP relay agent notification for prefix delegation
This topic describes how the DHCP relay agent notification for prefix delegation feature enables the Cisco 8000 Series Router, working as a DHCPv6 relay agent, to find prefix delegation options and manage subscriber routes.
Relay agent Option 82 per Ethernet Flow Points
This topic describes DHCP relay agent Option 82 support on the Cisco 8000 Series Router, which lets you insert Circuit ID and Remote ID suboptions per Ethernet Flow Point (EFP) or per ingress Layer 2 interface into forwarded DHCP packets.
DHCPv6 relay over BVI for IANA address allocation
This topic describes DHCPv6 relay over a Bridge Virtual Interface (BVI) for Internet Assigned Numbers Authority (IANA) address allocation on the Cisco 8000 Series Router, which lets a DHCPv6 relay agent act as a stateful relay and maintain client bindings and route entries.
Configure the relay agent information feature
This topic describes how to configure the DHCP relay agent information option on the Cisco 8000 Series Router.
Configure the relay agent giaddr policy
This topic describes how to configure the DHCP relay agent's processing policy for BOOTREQUEST packets that already contain a nonzero giaddr attribute on the Cisco 8000 Series Router.
DHCP snooping
This topic describes DHCP snooping on the Cisco 8000 Series Router, which enhances network security by preventing unauthorized DHCP servers from distributing IP addresses.
DHCPv6 relay source address
This topic describes the DHCPv6 relay source address feature on the Cisco 8000 Series Router.
DHCP client
This topic describes the DHCP client functionality on the Cisco 8000 Series Router, which allows router interfaces to dynamically acquire IP address and server information.