A customer plans to deploy WoL in the enterprise with these high-level design requirements: - DHCP services must be available - Clients BIOS settings must be set for WoL - Clients get IP addresses…

Enabling `ip directed-broadcast` on SVI or routed interfaces is crucial for Wake-on-LAN (WoL) to function across different subnets, as it allows a directed broadcast IP packet to be converted into a Layer 2 broadcast on the target subnet, reaching the sleeping devices. The term "forward-protocol" implicitly refers to enabling forwarding for specific UDP ports, often achieved with `ip forward-protocol udp` in conjunction with helper-addresses for WoL.

Disabling `ip directed-broadcast` would prevent WoL magic packets from traversing subnet boundaries, making WoL ineffective for devices not on the same local broadcast domain as the sender.

Disabling `ip helper-addresses` would prevent DHCP broadcasts from reaching a DHCP server located on a different subnet, thus hindering clients from obtaining IP addresses once they are online.

There is no "WoL server" that clients send broadcasts to which needs an `ip helper-address`; WoL magic packets are sent -to- the clients. IP helper-address typically forwards client-initiated broadcasts to a server (e.g., DHCP, TFTP, DNS).

Enabling `ip helper-addresses` on the SVI or routed interfaces where clients reside is essential for DHCP services to function across subnets, allowing clients to obtain IP addresses after they are woken up by WoL. This mechanism relays client broadcast requests (like DHCP Discover) to a unicast address of the DHCP server.