Patent ID: 8276198
Filing Date: 2012-09-25
Classification: H04L,Y10S

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, wherein every encapsulated frame has a VLAN tag that is different from a tag used within tagged frames belonging to said VLAN; 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; transferring traffic between an unencapsulated segment (tagged or untagged) and an encapsulated segment of a same VLAN; and associating with every VLAN two unique VLAN tags, said two unique VLAN tags comprising VID-T, which is used within tagged frames of said VLAN, and VID-E, which is used within encapsulated frames of said VLAN.