Shaping device and router device

Details Shaping device and router device Shaping device and router device

2008-02-06

2010-12-14

Yao, Kwang B (Department: 2473)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S412000, C709S234000

Reexamination Certificate

active

07852762

ABSTRACT:
A shaping unit includes FIFOs for accumulating a packet which is so designed as to arrive at a destination address. A packet (an ordinary packet), which has one destination address, is accumulated into the FIFO corresponding to the one destination address. A packet (a virtual multicast packet), which will be copied in the downstream of the shaping unit to arrive at two destination addresses, is accumulated into either of the FIFOs. A packet read unit transmits the virtual multicast packet, which is read from either of the FIFOs, and the ordinary packet, which is read from the one of the FIFOs, to a multiplexing circuit in such a manner that the total bandwidth of both packets is controlled.

REFERENCES:
patent: 6532213 (2003-03-01), Chiussi et al.
patent: 6633540 (2003-10-01), Raisanen et al.
patent: 6687225 (2004-02-01), Kawarai et al.
patent: 2001/0014081 (2001-08-01), Kawasaki et al.
patent: 2003/0012197 (2003-01-01), Yazaki et al.
patent: 2005/0207417 (2005-09-01), Ogawa et al.
patent: 2007/0121627 (2007-05-01), Chen
patent: 2008/0068992 (2008-03-01), Xie et al.
patent: 6-315034 (1994-11-01), None
IETF RFC3376, Internet Group Management Protocol Version 3.
S. Golestani, “A Self-Clocked Fair Queueing Scheme for Broadband Applications”, Proc. of INFOCOM 94, 1994, pp. 636-646.
IETF RFC3810, Multicast Listener Discovery Version 2 (MLDv2) for IPv6.
http://www.cisco.com/warp/public/473/22.html, “Multicast in a Campus Network: CGMP and IGMP Snooping”.

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