US 12,348,412 B2
Scalable core and edge network 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 Apr. 8, 2024, as Appl. No. 18/628,936.
Application 18/628,936 is a continuation of application No. 17/900,943, filed on Sep. 1, 2022, granted, now 11,979,313.
Prior Publication US 2024/0259297 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 45/24 (2022.01); H04L 45/00 (2022.01); H04L 45/42 (2022.01)
CPC H04L 45/24 (2013.01) [H04L 45/42 (2013.01); H04L 45/566 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A routing device in a network, comprising:
an ingress/egress linecard;
another linecard;
a fabric;
a processing system including a processor; and
a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
splitting a forwarding information base (FIB) for routes locally within the routing device such that the splitting of the FIB is hidden externally to the routing device;
storing low-volume routes prefixes of the FIB in a forwarding routing table of the another linecard; and
storing high-volume routes prefixes of the FIB in a routing table of the ingress/egress linecard,
wherein the ingress/egress linecard looks up a route of an incoming data packet, determines whether the incoming data packet bears a high-volume route prefix, forwards the incoming data packet bearing the high-volume route prefix through the fabric and out of the routing device, and sends the incoming data packet bearing a low-volume route prefix through the fabric to the another linecard.