Ciena Corporation

Anurag Prakash

Gerald Smallegange

Ritesh Singal

Atul Mehra

Chaitanya Varma Guntumadugu

Praveen Kumar Mada

Peter Pieda

Yong Yin

Mahesh Giri

Samson Punnammoottil Ninan

Jayesh Jayachandra Kumar

A Border Gateway Protocol (BGP) router is configured to obtain a plurality of prefix-lists one or more of (i) in local Outbound Route Filtering (ORF) and (ii) in ORF from upstream BGP routers, automatically apply logical set operations on the plurality of prefix-lists to determine an aggregated ORF for a downstream BGP router, and propagate the aggregated ORF to the downstream BGP router which uses the aggregated ORF for BGP advertisements. This can include auto generation of sequence numbers for the plurality of prefix-lists in the aggregated ORF, such that the downstream BGP router uses the sequence numbers for precedence in the advertisements. The prefix-lists can include one or more PERMIT lists, DENY lists, and a combination of PERMIT and DENY lists, with the logical set operations including union with the PERMIT lists, intersection with the DENY lists, and a combination of union, intersection, and set differences with the combination of PERMIT and DENY lists.

Automated ORF propagation in BGP networks

A router configured to implement Border Gateway Protocol (BGP) includes circuitry configured to receive BGP updates from one or more BGP peers connected to the router, detect a trigger related to BGP updates where the trigger is indicative of a need to apply backpressure by the one or more BGP peers, and send a backpressure notification message to the one or more BGP peers based on the trigger, such that the one or more BGP peers apply the backpressure. The circuitry can be further configured to monitor one or more criteria associated with operation of the router, for the trigger.

Backpressure notifications to peers for BGP updates

Systems and methods for a Border Gateway Protocol (BGP) route aggregation exception include advertising, to BGP peers, of a plurality of prefixes using BGP route aggregation or summarization; detecting a failure that is local to the router affecting a prefix of the plurality of prefixes; and advertising an aggregation exception that identifies the prefix to all of the BGP peers. The systems and methods can also include detecting recovery of the failure; and sending a withdrawal of the aggregation exception to all of the BGP peers.

BGP route aggregation exception systems and methods

Growing community of inventors

Kanata, Canada

Anurag Prakash