US Patent No: 6,914,905

Number of patents in Portfolio can not be more than 2000

Method and system for VLAN aggregation

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Abstract

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A method and system for an aggregated virtual local area network (VLAN) architecture in which several VLANs in a network share the same default router address and subnet mask, but remain isolated from one another's network traffic. Instead of the traditional method of assigning one subnet to a VLAN, each VLAN is assigned only a portion of a subnet's IP address space, and is further grouped into a super-VLAN uniquely associated with that subnet. Intra-VLAN traffic is forwarded only to host IP addresses assigned to that same VLAN according to a VLAN identifier carried in the data packet. Inter-VLAN traffic is processed by a virtual router interface which routes the data packet by applying the routing configuration for the subnet uniquely associated with the super-VLAN, according to a super-VLAN identifier carried in the data packet. The routing configuration used by the virtual router interface includes routing protocols, static routes, redundant router protocols and access-lists. Since each VLAN shares the same virtual router interlace, the traditional address overhead of a subnet is minimized, requiring only one default router and subnet mask, as well as only one pair of subnet broadcast addresses for all hosts on the subnet and the subnet itself. The aggregated VLAN architecture provides for the efficient use and management of a network's IP address space.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EXTREME NETWORKS, INC.SANTA CLARA, CA190

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Merchant, Shehzad T Mountain View, CA 11 791
Yin, Kenneth T Rumson, NJ 2 45
Yip, Michael Mountain View, CA 45 1346

Cited Art Landscape

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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EXTREME NETWORKS, INC. (27)
7,581,024 Method and system for increasing participation in a standby router protocol 3 2001
7,447,777 Switching system 12 2002
8,161,270 Packet data modification processor 0 2004
7,822,032 Data structures for supporting packet data modification operations 2 2004
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7,463,628 Packet data modification processor command instruction set 9 2004
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7,894,451 Method of providing virtual router functionality 2 2005
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BELLSOUTH INTELLECTUAL PROPERTY CORPORATION (5)
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ALCATEL LUCENT (2)
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INFOBLOX INC. (2)
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BOCKSTAR TECHNOLOGIES LLC (1)
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CISCO TECHNOLOGY, INC. (1)
7,944,925 System and method for grouping multiple VLANs into a single 802.11 IP multicast domain 3 2007
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
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JUNIPER NETWORKS, INC. (1)
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SBC KNOWLEDGE VENTURES, L.P. (1)
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SILICON VALLEY BANK (1)
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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 5, 2017
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