Scalable handling of BGP route information in VXLAN with EVPN control plane

摘要

A method for programming a MAC address table by a first leaf node in a network comprising a plurality of leaf nodes is provided. Each leaf node comprises one or more Virtual Tunnel End Points (“VTEPs”) and instantiates a plurality of Virtual Routing and Forwarding elements (“VRFs”), with a corresponding Bridge Domain (“BD”) assigned to each VRF. The method includes obtaining information indicating one or more VTEP Affinity Groups (VAGs), each VAG comprising an identification of one VTEP per leaf node, obtaining information indicating assignment of each VRF to one of the VAGs, assigning each VAG to a unique Filtering Identifier (“FID”), thereby generating one or more FIDs, and programming the MAC address table, using FIDs instead of BDs, by populating the MAC address table with a plurality of entries, each entry comprising a unique combination of a FID and a MAC address of a leaf node.

主权项

1. A method for a first leaf node in a network comprising a plurality of leaf nodes to program a Media Access Control (“MAC”) address table, the method comprising:
obtaining from a first routing message received from a second leaf node:
a Virtual Tunnel End Point (“VTEP”) of the second leaf node,a MAC address of the second leaf node, andan indication that the first routing message is independent of any of a plurality of Virtual Routing and Forwarding elements (“VRFs”) instantiated on the second leaf node; storing an association between the MAC address and the VTEP obtained from the first routing message; obtaining from a second routing message received from the second leaf node:
the VTEP of the second leaf node, anda VRF instantiated on the second leaf node; determining from the stored association that the VTEP obtained from the second routing message is associated with the MAC obtained from the first routing message; and populating the MAC address table of the first leaf node with an entry indicating the VRF and the VTEP obtained from the second routing message and the MAC address obtained from the first routing message.