The successful Infrastructure as a Service (IaaS) cloud providers (for example, Amazon) carefully hide the implementation details, for obvious reasons. Design guides published by various networking vendors usually use VLAN-based approach or hypervisor-based firewalls. Hierarchical VPLS combined with Q-in-Q encapsulation or Provider Backbone Bridging (PBB) would be ideal technologies if you want to implement per-tenant Layer 2 domains; MPLS/VPN would be the technology to use if you need Layer 3 isolation. Unfortunately, major networking vendors haven't started combining their data center and service provider expertise yet; anyone trying to build very-large-scale infrastructure cloud service is still on their own.
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
Have a question for Ivan Pepelnjak? Send an e-mail to firstname.lastname@example.org.
Dig Deeper on Cloud Networks
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.