[J-u-boot.git] / doc / README.VLAN

U-Boot has networking support for VLANs (802.1q), and CDP (Cisco
Discovery Protocol).

You control the sending/receiving of VLAN tagged packets with the
"vlan" environmental variable. When not present no tagging is
performed.

CDP is used mainly to discover your device VLAN(s) when connected to
a Cisco switch.

Note: In order to enable CDP support a small change is needed in the
networking driver. You have to enable reception of the
01:00:0c:cc:cc:cc MAC address which is a multicast address.

Various defines control CDP; see the README section.
Commit	Line	Data
a3d991bd WD	1	U-Boot has networking support for VLANs (802.1q), and CDP (Cisco
	2	Discovery Protocol).
	3
	4	You control the sending/receiving of VLAN tagged packets with the
	5	"vlan" environmental variable. When not present no tagging is
	6	performed.
	7
	8	CDP is used mainly to discover your device VLAN(s) when connected to
	9	a Cisco switch.
	10
	11	Note: In order to enable CDP support a small change is needed in the
	12	networking driver. You have to enable reception of the
	13	01:00:0c:cc:cc:cc MAC address which is a multicast address.
	14
	15	Various defines control CDP; see the README section.