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. |