Patent ID: 8102854
Filing Date: 2012-01-24
Classification: H04L

Abstract:
1. A system, comprising: a processing device configured to: receive a packet encapsulated with a plurality of protocol layers including at least a first IPv6 layer and a second Ethernet layer that encapsulates the first IPv6 layer, the second Ethernet layer of the received packet including an Ethertype field containing a standard bit value that denotes, according to the Ethernet protocol, an IPv6 packet in a payload of the Ethernet frame; inspect the received packet to determine whether the received packet is a neighbor discovery message, wherein the first IPv6 layer of the protocol layers is analyzed during the inspection; if the received packet is not a neighbor discovery message according to the inspection, then forward the packet with the standard bit value in the Ethertype field; if the received packet is a neighbor discovery message according to the inspection, then replace the standard bit value in the Ethertype field to a new non-standard bit value according to a distributed inspection scheme between the processing device and a remote device; and forward the packet having the new non-standard bit value in the Ethertype field.