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authorwdenk <wdenk>2004-04-15 21:48:45 +0000
committerwdenk <wdenk>2004-04-15 21:48:45 +0000
commita3d991bd0da8b9fb9dbf2c7481091c3d082b9b13 (patch)
treec474375dc1cc812e006921ab2ad122b21923e512 /doc
parenta6ab4bf978a3d5a52a47bbd259b7eb4c860ebd0c (diff)
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Patches by Pantelis Antoniou, 30 Mar 2004:
add networking support for VLANs (802.1q), and CDP (Cisco Discovery Protocol)
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diff --git a/doc/README.VLAN b/doc/README.VLAN
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+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.