Keepalive mechanism to maintain links in a lossy environment
First Claim
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1. A method, comprising:
- determining a selected link from a particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse;
monitoring a link quality of the selected link in reverse based on received traffic over the selected link;
determining whether the link quality is below a lower threshold;
in response to the link quality being below the lower threshold, activating use of keepalive messages from the particular device over the selected link; and
deactivating the use of keepalive messages in response to determining that the link quality is above an upper threshold.
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Abstract
In one embodiment, a particular device determines a selected link from the particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse. By monitoring a link quality of the selected link in reverse based on received traffic over the selected link, the particular device may determine whether the link quality is below a lower threshold. In response to the link quality being below the lower threshold, the particular device activates use of keepalive messages from the particular device over the selected link.
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Citations
22 Claims
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1. A method, comprising:
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determining a selected link from a particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse; monitoring a link quality of the selected link in reverse based on received traffic over the selected link; determining whether the link quality is below a lower threshold; in response to the link quality being below the lower threshold, activating use of keepalive messages from the particular device over the selected link; and deactivating the use of keepalive messages in response to determining that the link quality is above an upper threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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one or more network interfaces to communicate in a computer network; a processor coupled to the network interfaces and adapted to execute one or more processes; and a memory configured to store a process executable by the processor, the process when executed operable to; determine a selected link from the apparatus toward a root device in the computer network, wherein traffic destined away from the root device via the apparatus utilizes the selected link in reverse; monitor a link quality of the selected link in reverse based on received traffic over the selected link; determine whether the link quality is below a lower threshold; activate use of keepalive messages from the apparatus over the selected link in response to the link quality being below the lower threshold; and deactivate the use of keepalive messages in response to determining that the link quality is above an upper threshold. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A tangible, non-transitory, computer-readable media having software encoded thereon, the software, when executed by a processor on a particular device, operable to:
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determine a selected link from the particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse; monitor a link quality of the selected link in reverse based on received traffic over the selected link; determine whether the link quality is below a lower threshold; and activate use of keepalive messages from the particular device over the selected link in response to the link quality being below the lower threshold; deactivate the use of keepalive messages in response to determining that the link quality is above an upper threshold. - View Dependent Claims (20, 21, 22)
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Specification