Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-08-08
2006-08-08
Ho, Duc (Department: 2665)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S401000
Reexamination Certificate
active
07088718
ABSTRACT:
A method of routing data from a client through one or more load-balancing nodes to a selected load-balanced server among a plurality of servers in a network involves: receiving, at a last load balancing node associated with a selected server among the plurality of servers, a first packet of a server reply to a request from the client; setting a first flag value in the first packet of the server reply; storing one or more identifiers of ingress interfaces on which the packet arrives, in a send path list for server load balancing, as the first packet of the server reply is routed from the last load balancing node to the client using hop-by-hop decisions; receiving one or more subsequent packets of the client request; setting a second flag value in each of the subsequent packets; and forwarding the subsequent packets to the selected server only on a route that is defined by the send path list and without hop-by-hop routing decisions. As a result, packet flows are rapidly routed from the same client to the same server without time-consuming hop-by-hop routing decisions or repeated load-balancing decisions.
REFERENCES:
patent: 6243667 (2001-06-01), Kerr et al.
patent: 6424992 (2002-07-01), Devarakonda et al.
patent: 6449647 (2002-09-01), Colby et al.
patent: 6463062 (2002-10-01), Buyukkoc et al.
patent: 6466985 (2002-10-01), Goyal et al.
patent: 6473802 (2002-10-01), Masters
patent: 6501754 (2002-12-01), Ohba et al.
patent: 6775692 (2004-08-01), Albert et al.
patent: 6781990 (2004-08-01), Puri et al.
patent: 6798777 (2004-09-01), Ferguson et al.
patent: 6856991 (2005-02-01), Srivastava
patent: 2002/0143965 (2002-10-01), Aiken, Jr.
patent: 2002/0143981 (2002-10-01), DeLima et al.
E. Rosen et al., “Multiprotocol Label Switching Architecture,” IETF RFC 3031, Jan. 2001.
M. Cieslak, “Web Cache Coordination Protocol V2.0,” Jul. 13, 2000.
Cisco Systems, Inc., “Distributed Director—Overview,” 2000, 6 pp.
K. Delgadillo, “Distributed Director—White Paper,” 1999, 19 pp.
Cisco Systems, Inc., “The Effects of Distributing Load Randomly to Servers,” 1997, 18 pp.
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Ho Duc
LandOfFree
Server load balancing using IP option field approach to... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Server load balancing using IP option field approach to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Server load balancing using IP option field approach to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3661136