Patent ID: 7499450
Filing Date: 2009-03-03
Classification: H04L

Abstract:
1. A router IP port for an IP router of an IP network system comprising: an encapsulating unit including an input operably connected to an IP sub-network and an output operably connected to an Ethernet unit and configured to encapsulate IP data packets received from the IP sub-network to generate Ethernet data packets and to forward the generated Ethernet data packets to the Ethernet unit of said IP router; a decapsulating unit including an input operably connected to the Ethernet unit and an output operably connected to the IP sub-network and configured to decapsulate Ethernet data packets received from said Ethernet unit to extract IP data packets to be forwarded; and an egress filter unit including an input operably connected to the output of the decapsualting unit and an output operably connected to the IP sub-network and configured to filter the extracted IP data packets in response to an internally generated match signal which is generated based upon a logical comparison of an hierarchical destination address prefix of said extracted IP data packets with configuration data.