Back to results
US 2016/0254997 A1Published application
Refresh flow entry
AssigneeHewlett-Packard Development Company, L.P.
InventorsSandeep KURUDI MATADA, Sonali RAJPUT
Life of this patent
Estimating the term…
Abstract
A first flow entry includes match parameters and an action. A second flow entry includes match parameters and which are the same as the match parameters and the action of the first flow entry. The first flow entry and the second flow entry are refreshed.
Claims20
A method comprising:
- writing a first flow entry including match parameters, an action and a first priority, writing a second flow entry including match parameters, an action and a second priority, wherein the match parameters and the action of the second flow entry are the same as the match parameters and the action of the first flow entry and wherein the second priority is different from the first priority;
- and
- refreshing the first flow entry and the second flow entry alternately.
A non-transitory computer readable medium, storing machine readable instructions that are executable by a processor of a SDN controller to:
- send an instruction from the SDN controller to a SDN network device to write a first flow entry in a flow table of the SDN network device;
- the first flow entry including first match parameters, a first action and a first timeout;
- send an instruction from the SDN controller to a SDN network device to write a second flow entry in a flow table of the SDN network device;
- the second flow entry including second match parameters, a second action and a second timeout;
- wherein the first match parameters are the same as the second match parameters and the first action is the same as the second action;
- and periodically refresh the first flow entry and the second flow entry in turn one after the other.
3 more elements
A controller including:
- a network protection engine to write a flow entry and a backup flow entry to a SDN network device, the flow entry including forwarding instructions to divert a flow including a DNS request to a security device and a priority indicating the priority which the flow entry has relative to other flow entries;
- the backup flow including the same forwarding instructions as the flow entry, but having a different priority;
- and
- a scheduler to oscillate between refreshing the flow entry and refreshing the backup flow entry.
1 more element
Dependencies are inferred from the claim text.