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1、GTC China, Dec 2020 OPEN DATA CENTER WITH CLOS & CUMULUS 2 CLOS and BGP Fundamentals How should it work? iBGP vs eBGP What BGP hammer to use BGP Configuration How to make it work Routing on Host A new solution for DC network Network is a Server Cumulus Linux Introduction AGENDA 3 BGP AND FABRICS Ref
2、erence material 4 BGP FUNDAMENTALS 5 BGP ON CUMULUS LINUX Multiprotocol support Supports IPv4, IPv6, L2VPN-EVPN Implemented in the FRR routing suite in Cumulus Linux High Performance Production in thousands of customers 6 AUTONOMOUS SYSTEM NUMBER (ASN) Each AS is uniquely identified by its ASN. Glob
3、al AS assigned by a central authority (IANA) Included as part of the BGP route advertisement Public 2 byte and 4 byte ASN Reserved 2 byte private range of 64512 - 65534 (1023) Reserved 4 byte private range of 4200000000 - 4294967294 (94 million) ASN: 65000ASN: 65001 10.1.0.0/31 fd01:X/127 BGP Adjacency .0.1 7 An AS originates their routes into BGP BGP peers with other BGP speakers Uses TCP port