Connecting layer-2 domains over layer-3 networks

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 9331974
SERIAL NO

13349376

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Abstract

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In one embodiment, a method includes building an address resolution cache for a layer-3 router in a first layer-2 datacenter, where the address resolution cache includes a plurality of entries, each of the entries containing a host network address, a host hardware address, and a switch identifier for a switch serving a host, intercepting an address resolution flood within the first layer-2 datacenter that seeks address resolution for a host in a second layer-2 datacenter, and generating a response to the address resolution flood that indicates a source in the second layer-2 datacenter, where data indicating the source in the second layer-2 datacenter is accessed from the address resolution cache.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA14590

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grover, Hasmit Fremont, US 17 344
Merchant, Sameer San Jose, US 22 171
Moreno, Victor Carlsbad, US 21 456
Rao, Dhananjaya Milpitas, US 37 384
Sane, Sanjay Fremont, US 45 1147

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 2006/0126,614 Automatic network configuration 8 2004
 
FUTUREWEI TECHNOLOGIES, INC. (3)
* 2012/0014,387 Virtual Layer 2 and Mechanism to Make it Scalable 190 2011
* 2011/0317,703 Asymmetric Network Address Encapsulation 133 2011
* 2012/0014,386 Delegate Gateways and Proxy for Target Hosts in Large Layer 2 and Address Resolution with Duplicated Internet Protocol Addresses 177 2011
 
FORCE10 NETWORKS, INC. (1)
* 2011/0292,939 METHOD & APPARATUS FOR FORWARDING TABLE REDUCTION 52 2010
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (1)
2007/0115,967 Dynamic discovery of ISO layer-2 topology 26 2006
 
CISCO TECHNOLOGY, INC. (4)
2008/0186,968 TRIPLE-TIER ANYCAST ADDRESSING 66 2007
* 2009/0037,607 Overlay transport virtualization 144 2007
* 2011/0206,047 Multiple Network Architecture Providing for Migration of Devices 21 2010
* 2013/0044,757 Proxy FHRP for Anycast Routing Service 9 2011
 
Ezibro Networks Ltd. (1)
* 2005/0286,518 Device for enabling intra-edge routing-less premises internet protocol communication and communication method using the same 24 2005
 
JUNIPER NETWORKS, INC. (1)
2010/0226,381 ROUTING FRAMES IN A TRILL NETWORK USING SERVICE VLAN IDENTIFIERS 95 2009
 
KDDI CORPORATION (1)
* 2003/0076,845 Data transfer system using mobile IP 2 2002
 
NICIRA, INC. (1)
* 2013/0044,636 DISTRIBUTED LOGICAL L3 ROUTING 116 2012
 
FUJITSU LIMITED (1)
* 2010/0040,072 FRAME SWITCHING DEVICE AND ADDRESS LEARNING METHOD 7 2009
 
SONUS NETWORKS, INC. (1)
7415028 Method and system for optimizing routing table changes due to ARP cache invalidation in routers with split plane architecture 17 2003
* Cited By Examiner

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