Method and system for determining path maximum transfer unit for IP multicast

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7697524
APP PUB NO 20060221844A1
SERIAL NO

11099787

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method and system for determining path maximum transfer unit (PMTU) in an Internet Protocol (IP) multicast is described. If a packet of a size greater than the MTU of any link of a path, with its Don't Fragment (DF) bit set, is sent by the source, the packet is dropped and an ICMP message, stating “Destination unreachable, DF bit set”, is sent to the source. The rate of messages to the source is controlled to avoid implosion of traffic. In response to the messages, the source sends multicast probe packets of multiple sizes to multicast distribution tree to determine its PMTU.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA14366

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jayaraman, Anand Chennai, IN 2 21
Subramanian, Srinivas San Jose, US 8 139
Venkataswami, Balaji Venkat Chennai, IN 35 217

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (6)
* 7103674 Apparatus and method of reducing dataflow distruption when detecting path maximum transmission unit (PMTU) 6 2002
* 2005/0281,288 Method and apparatus for discovering path maximum transmission unit (PMTU) 44 2004
* 2006/0018,315 Method and apparatus for providing fragmentation at a transport level along a tranmission path 18 2004
* 7505484 Remote discovery and storage of a path maximum transmission unit (PMTU) value 6 2004
* 2006/0045,131 Method, system, and computer program product for remote storage and discovery of a path maximum transmission unit value on a network 7 2004
* 2008/0165,775 Method and Apparatus for Efficient Path MTU Information Discovery and Storage 21 2007
 
VERIZON PATENT AND LICENSING INC. (1)
* 2007/0143,598 Means of mitigating denial of service attacks on IP fragmentation in high performance IPsec gateways 8 2003
 
RIVERBED TECHNOLOGY, INC. (1)
* 2003/0145,233 Architecture to thwart denial of service attacks 36 2002
 
CISCO TECHNOLOGY, INC. (1)
* 2006/0221,844 Method and system for determining path maximum transfer unit for IP multicast 13 2005
 
INTEL CORPORATION (1)
* 7317692 Network path discovery 5 2002
 
ADVANTECH SATELLITE NETWORKS INC. (1)
* 6975647 Enhancements for TCP performance enhancing proxies 67 2002
 
SAMSUNG ELECTRONICS CO., LTD. (3)
* 7451227 Method for path MTU discovery on IP network and apparatus thereof 7 2003
* 2003/0185,208 Method and apparatus for changing path maximum transmission unit on dynamic IP network 15 2003
* 2005/0041,635 Network apparatus, system and method for discovering path MTU in data communication network 13 2004
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
* 7302491 System and method of reducing data corruption due to recycled IP identification numbers 2 2003
 
CITRIX SYSTEMS, INC. (8)
* 7542471 Method of determining path maximum transmission unit 49 2003
* 2005/0005,024 Method of determining path maximum transmission unit 30 2003
* 2005/0058,131 Wavefront detection and disambiguation of acknowledgments 41 2004
* 2005/0060,426 Early generation of acknowledgements for flow control 31 2004
* 2005/0063,302 Automatic detection and window virtualization for flow control 21 2004
* 2005/0063,303 TCP selective acknowledgements for communicating delivered and missed data packets 53 2004
* 2005/0063,307 Flow control system architecture 48 2004
* 2005/0074,007 Transaction boundary detection for reduction in timeout penalties 79 2004
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
* 2009/0003,241 A Method and System For Obtaining Path Maximum Transfer Unit in Network 6 2006
 
MICRO FOCUS SOFTWARE INC. (1)
* 7304959 Utility based filtering mechanism for PMTU probing 13 2003
 
ORACLE AMERICA, INC. (1)
* 6212190 Method and system for generating data packets on a heterogeneous network 75 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
VERIZON PATENT AND LICENSING INC. (4)
* 7921285 Means of mitigating denial of service attacks on IP fragmentation in high performance IPsec gateways 1 2003
* 2007/0143,598 Means of mitigating denial of service attacks on IP fragmentation in high performance IPsec gateways 8 2003
* 8688979 Means of mitigating denial of service attacks on IP fragmentation in high performance IPSEC gateways 0 2011
* 2011/0161,664 MEANS OF MITIGATING DENIAL OF SERVICE ATTACKS ON IP FRAGMENTATION IN HIGH PERFORMANCE IPSEC GATEWAYS 0 2011
 
INFOBLOX INC. (1)
* 9025494 IPv6 network device discovery 0 2012
 
CISCO TECHNOLOGY, INC. (1)
9461914 Path maximum transmission unit handling for virtual private networks 0 2014
 
LENOVO INTERNATIONAL LIMITED (1)
9118596 Reducing fragmentation of packets in a networking environment 0 2013
* Cited By Examiner

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7.5 Year Payment $3600.00 $1800.00 $900.00 Oct 13, 2017
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 13, 2021
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