LAN type internet access network and subscriber line...

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header

Reexamination Certificate

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Details

C370S395540

Reexamination Certificate

active

07570647

ABSTRACT:
L2 switch1accommodates a plurality of subscriber lines and is connected to an upper side of an internet including service/management device5to exchange data packet. L2 switch1transmits broadcast packet of DHCP and ARP among the exchanged data packets to not the side of subscriber line but the upper side of the internet. When L2 packet transfer device2transfers the broadcast packet of ARP request to IP address managing device3,L2 packet transfer device2determines whether the ARP request is transmitted from a user terminal connected to the subscriber line or from service/management device5or packet transfer device4.

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Japanese Office Action dated Aug. 28, 2007 along with a partial English Translation.
Munechika Nishida, Broadband will be much faster by reviewing setting and machine: Broadband Fastest Theory, ASAHI Personal Computer No. 294, Japan, The Asahi Shimbun Company, Sep. 1, 2001, No. 294, 32-45.
D. Senie, Changing the Default for Directed Broadcasts in Routers, RFC 2644 (Request for Comments: 2644), Network Working Group, Aug. 1999, URL: ftp://ftp.rfc-editor.org/in-notes/rfc2644.txt.

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