Network control software notification and invalidation of static entries

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10877951
APP PUB NO 20150207663A1
SERIAL NO

14161347

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Techniques are disclosed for notifying network control software of new and moved source MAC addresses. In one embodiment, a switch may redirect a packet sent by a new or migrated virtual machine to the network control software as a notification. The switch does not forward the packet, thereby protecting against denial of service attacks. The switch further adds to a forwarding database a temporary entry which includes a “No_Redirect” flag for a new source MAC address, or updates an existing entry for a source MAC address that hits in the forwarding database by setting the “No_Redirect” flag. The “No_Redirect” flag indicates whether a notification has already been sent to the network control software for this source MAC address. The switch may periodically retry the notification to the network control software, until the network control software validates the source MAC address, depending on whether the “No_Redirect” is set.

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First Claim

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINE CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Basso, Claude Nice, FR 245 4753
Cors, Josep Rochester, US 55 672
Janakiraman, Venkatesh K Cupertino, US 9 32
Lao, Sze-Wa Fremont, US 7 28
Shah, Sameer M Cupertino, US 6 27
Shedivy, David A Rochester, US 44 649
Spiegel, Ethan M Mountain View, US 24 594
Vaidhyanathan, Natarajan Carrboro, US 113 2031
Verrilli, Colin B Apex, US 60 1220

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