Packet relay apparatus

Details Packet relay apparatus Packet relay apparatus

2007-02-15

2011-12-27

Zhou, Yong (Department: 2477)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

Reexamination Certificate

active

08085795

ABSTRACT:
A unicast-use tunnel is added between the Note-C and GW-B (i.e., a unicast optimization). Then, the Note-C transmits, to a GW-C, a second IP packet encapsulating a first IP packet, to which an inter-GW header is added, by an IP header to which a multicast address is set. The multicast-use second IP packet is transferred to a CE by way of a tunnel. The CE copies the received second IP packet and transfers it to a GW-A and the GW-B by way of the tunnel (i.e., a multicast optimization).

REFERENCES:
patent: 6208649 (2001-03-01), Kloth
patent: 2003/0051195 (2003-03-01), Bosa et al.
patent: 99/00949 (1999-01-01), None
Extended European Search Report issued in corresponding European Patent Application No. 07101851.9, on Jun. 15, 2007.

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