CISCO ACI · VXLAN / BGP EVPN · DATA CENTRE
A university data centre rebuilt as a policy fabric
- Challenge
- A campus data centre where every new application meant another VLAN, another firewall rule and another undocumented dependency. Growth was outpacing the team's ability to keep track of what talked to what.
- Solution
- A spine-leaf fabric on Cisco ACI, with VXLAN carrying the overlay and BGP EVPN distributing reachability. Policy moved out of per-device configuration and into APIC, so what an application is allowed to reach is now a contract you can read rather than a rule buried in a rule base. Designed, built and handed over with the as-built records to match.
- CISCO ACI
- APIC
- VXLAN
- BGP EVPN
- SPINE-LEAF
- AS-BUILT
ACI
Fabric and policy model
EVPN
Overlay control plane
HLD + LLD
Documented and handed over


































