US 12,341,708 B2
Management of routing information in a carrier-grade router
Thomas Spencer, IV, Morganville, NJ (US)
Assigned to AT&T Intellectual Property I, L.P., Atlanta, GA (US)
Filed by AT&T Intellectual Property I, L.P., Atlanta, GA (US)
Filed on Sep. 1, 2022, as Appl. No. 17/900,938.
Prior Publication US 2024/0080278 A1, Mar. 7, 2024
Int. Cl. H04L 49/25 (2022.01); H04L 45/00 (2022.01); H04L 45/02 (2022.01); H04L 47/122 (2022.01)
CPC H04L 49/25 (2013.01) [H04L 45/02 (2013.01); H04L 45/22 (2013.01); H04L 47/122 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by a processing system including a processor, a plurality of routes in a network through a routing device having a fabric, a first set of distributed chassis packet forwarders (DCPs) that support external service interfaces and a second set of DCPs;
storing, by the processing system, the plurality of routes in a forwarding information base (FIB);
determining, by the processing system, a first set of routes in the FIB having a high volume of usage;
determining, by the processing system, a second set of routes in the FIB having a low volume of usage;
copying, by the processing system, the first set of routes to the first set of DCPs; and
copying, by the processing system, the second set of routes to the second set of DCPs;
receiving, by the processing system, packet header samples from the second set of DCPs; and
generating, by the processing system, a usage histogram of the packet header samples.