Distributed Data center Goals
- Ensure business continuity
- Distributed applications
- Seamless workload mobility
- Maximize compute resources
Challenges in traditional Layer 2 VPN:
- Flooding Behavior
- Unknown unicast for mac propagation
- Unicast Flooding reaches all sites
- Pseudo-wire Maintenance
- Full mesh of Pseudo-wire is complex
- Head-End replication is a common problem
- Multi-Homing
- Requires additional protocols and extends STP
- Malfunctions impact multipe sites