US 12,244,486 B2
Communication resilience in a network
Richard Lee Goodson, Huntsville, AL (US); Darrin L. Gieger, Huntsville, AL (US); Andrew T. Ruble, Athens, AL (US); and Brent Priddy, Huntsville, AL (US)
Assigned to ADTRAN, Inc., Huntsville, AL (US)
Filed by ADTRAN, Inc., Huntsville, AL (US)
Filed on Mar. 22, 2022, as Appl. No. 17/701,057.
Claims priority of provisional application 63/164,683, filed on Mar. 23, 2021.
Prior Publication US 2022/0311694 A1, Sep. 29, 2022
Int. Cl. H04L 45/02 (2022.01); H04L 12/46 (2006.01); H04L 45/00 (2022.01); H04L 45/247 (2022.01); H04L 45/28 (2022.01); H04L 45/42 (2022.01)
CPC H04L 45/02 (2013.01) [H04L 12/4641 (2013.01); H04L 45/22 (2013.01); H04L 45/247 (2022.05); H04L 45/28 (2013.01); H04L 45/42 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for communication resilience comprising:
assigning a unicast service to a protection group, wherein the protection group comprises an active communication path and a standby communication path between a service provider network element and a subscriber network element;
associating with a unicast service virtual local area network (“VLAN”) packet a tag, wherein the tag identifies the unicast service VLAN packet as a member of the unicast service VLAN;
encoding the tag with information for switching traffic from a service provider to a subscriber, wherein the tag uniquely identifies the subscriber, the service provider, the subscriber network element, the service provider network element, a port of the subscriber network element, and a maintenance domain;
detecting a network failure along a path between the service provider and the subscriber;
in response to detecting the network failure, switching to a protection path of the maintenance domain using the information encoded in the tag.