| wdenk | a3d991b | 2004-04-15 21:48:45 +0000 | [diff] [blame] | 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. |