Subject: [VRRP] Summary of the new patent against VRRP.

From: [email-masked]
Date: Thu, 20 Mar 2003 23:31:27 -0600

Mail forwarded to me by Brian Carpenter..

-----Original Message-----
From: ext Brian E Carpenter [mailto:[email-masked]]
Sent: Thursday, March 20, 2003 3:44 PM
To: Gupta Mukesh (IPRG/MtView)
Subject: Re: VRRP agenda

This may explain what I will say in a few minutes.

   Brian

PATENT SUMMARY
US6148410: Fault tolerant recoverable TCP/IP connection router
Nov. 14, 2000  

Authors
Baskey, Michael Edward; Wappingers Falls, NY 
Dillenberger, Donna Ngar-Ting; Yorktown Heights, NY 
Goldszmidt, German Sergio; Dobbs Ferry, NY 
Hunt, Guerney Douglass Holloway; Yorktown Heights, NY 
Levy-Abegnoli, Eric Michel; Mamaroneck, NY 
Nick, Jeffrey Mark; Fishkill, NY 
Schmidt, Donald William; Stone Ridge, NY 

Abstract
A fault tolerant recoverable connection device and methods are disclosed that include a primary router in an active state to
provide a connection between clients and servers in a network, and a backup router in a standby state. The states of the primary
and backup routers are switched when the primary router fails, the backup router has a better reach-ability state than the
primary router, or by an operator command. Each router has a synchronization manager which maintains synchronized tables between
the active and standby routers; a monitoring manager which monitors and switch the state of the routers; a reach-ability manager
which monitors, updates, and compares the reach-ability set and state of the routers; and a keep alive manager which monitors
the routers to provide a status notification to the monitoring manager. 
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