Patent ID: 7818796
Filing Date: 2010-10-19
Classification: H04L

Abstract:
1. A method for extending VLAN bridging semantics, comprising the steps of: providing an untagged frame and a tagged frame in accordance with the IEEE 802.1 Q VLAN bridge model; providing a cryptographically encapsulated frame, which encapsulated frame is a tagged frame, having a VLAN tag that is different from all tags used within unencrypted tagged frames belonging to said VLAN wherein said VLAN has two unique VLAN tags; providing a trunk port divided into inbound and outbound trunk ports; providing one of said untagged, tagged, and encapsulated frame type for each segment representing a bridged, cryptographic VLAN; and transferring traffic between a cryptographically unencapsulated segment (tagged or untagged) and a cryptographically encapsulated segment of a same VLAN.