Ciena Corporation

Thor Odd Andres Ramsland

Marc Holness

Himanshu Shah

Dennis E Hayes

Prabhakar Nagral

Systems and methods include obtaining a table having a plurality of addresses each having a plurality of attributes and classifications; responsive to a requirement to reduce a size of the table, reducing a number of the plurality of addresses based on one or more reduction approaches that use any of the plurality of attributes and classifications; and obtaining an output table having some or all of the plurality of addresses for a table receiver. The table can be obtained via control plane components including one or more of Interior Gateway Protocol (IGP) and Border Gateway Protocol (BGP). The requirement to reduce the size is based on a size of the table and a size of memory associated with the table receiver.

Controlling routing behavior during router table-memory exhaustion events

A router includes a plurality of ports interconnected to one or more Customer Edge (CE) nodes and one or more Provider Edge (PE) nodes; and memory storing a forwarding table of routes, wherein the routes in the forwarding table are installed automatically based on static or Interior Gateway Protocol (IGP)-learned default routes, connected routes, Border Gateway Protocol (BGP) routes learned from peers, and routes in an Internet routing table, and wherein a number of the routes installed in the forwarding table is less than a number of routes in the Internet routing table. The number of routes in the Internet routing table exceeds a capacity of the memory, and the routes installed in the forwarding table ensure a loop-free topology. The routes installed in the forwarding table can include all of the BGP routes learned from peers plus longer prefix matches from the routes in the Internet routing table.

Growing community of inventors

Woodbine, MD, United States of America

Thor Odd Andres Ramsland