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Diffstat (limited to 'doc/README.VLAN')
| -rw-r--r-- | doc/README.VLAN | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/doc/README.VLAN b/doc/README.VLAN new file mode 100644 index 00000000000..4f86d55ea1f --- /dev/null +++ b/doc/README.VLAN @@ -0,0 +1,15 @@ +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. |