US 11,973,654 B2
Filtered advertisements of secondary servers
Dean Ballew, Sterling, VA (US); and John R. B. Woodworth, Amissville, VA (US)
Assigned to CenturyLink Intellectual Property LLC, Broomfield, CO (US)
Filed by CenturyLink Intellectual Property LLC, Broomfield, CO (US)
Filed on Aug. 25, 2022, as Appl. No. 17/822,231.
Claims priority of provisional application 63/254,596, filed on Oct. 12, 2021.
Prior Publication US 2023/0110418 A1, Apr. 13, 2023
Int. Cl. H04L 41/12 (2022.01); H04L 45/16 (2022.01); H04L 45/74 (2022.01); H04L 67/1021 (2022.01)
CPC H04L 41/12 (2013.01) [H04L 45/16 (2013.01); H04L 45/74 (2013.01); H04L 67/1021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, performed by a routing device, comprising: receiving a first Anycast advertisement from a first server identifying the first server as a primary address for a service; receiving a second Anycast advertisement from the first server identifying the first server as a secondary address for the service; receiving a third Anycast advertisement from a second server identifying the second server as the secondary address for the service; receiving a first community advertisement from the first server identifying the first server as a member of a first community; receiving a first request from a client including the primary address; routing the first request to the first server; receiving a second request from the client including the secondary address;
based at least on the first community advertisement, ignoring the first server and routing the second request to the second server.