4Configuring and implementing hybrid and multicloud network interconnectivity

• 4.1Cloud Interconnect and IPSec VPN

  Understand Dedicated/Partner/Cross-Cloud Interconnect connections and VLAN attachments, layer-2 vs layer-3 differences, HA VPN over Cloud Interconnect, 99.9%/99.99% SLA topologies, site-to-site IPSec VPN (HA VPN to on-prem/to other VPCs, Classic VPN route-based/policy-based), and encryption options such as MACsec.

• 4.2Cloud Router and hybrid NCC

  Understand Cloud Router BGP attributes (ASN, route priority/MED, link-local addresses, authentication), Bidirectional Forwarding Detection (BFD), custom-advertised/learned routes, VPC legacy/standard best-path selection, Network Connectivity Center hybrid spokes (VPN/VLAN attachments), site-to-site data transfer, router appliances (RAs), and solving transitivity issues.