RE: Wake On Lan (WOL) not working on Dell precision tower 5810 with Intel ethernet server adapter i210-t1 at first power up / after no power
There is also the problem that magic packets wont traverse sub domains with network switches and they are considered hostile packets at the firewall.
If a Cisco interface is configured with the no ip directed-broadcast command, directed broadcasts that are otherwise exploded into link-layer broadcasts at that interface are dropped instead. This means that the no ip directed-broadcast command must be configured on every interface of every router that is connected to a target subnet. It is not sufficient to configure only on firewall routers. The no ip directed-broadcast command is the default in Cisco IOS Software Release 12.0 and later. In earlier releases, the command should be applied to every LAN interface that is not known to forward legitimate directed broadcasts.
"switchport mode access"
"switchport access vlan4"
WOL between VLANs must go through a layer 3 interface