Introduction to feature
Wake-on-LAN (WOL) is an Ethernet computer networking
standard that allows a computer to be turned on or awakened by a network
message. The message is sent by a program executed on the same local
area network. Messages can also be initiated from another network
by using subnet directed broadcasts or a WOL gateway service. WOL
is implemented using specially designed packet called magic packet.
WOL is enabled on the switch by using a ip directed-broadcast
command with an IPv4 configuration, which can be used to specify
an access-list name, thus avoiding unnecessary administrative overhead.
IP directed-broadcasts would only be forwarded
if permitted by the associated access-list. An implicit deny
at the end of an access list drops all IP directed-broadcasts that
are not authorized according to the access list entries.
IP routing must be enabled on the switch for this feature to work.