Designing Your Cloud Infrastructure
Many network architectures include a tiered design with three or more tiers such as core, distribution, and access. Designs are driven by the port bandwidth and quantity required at the edge, in addition to the ability of the distribution and core tiers to provide higher speed uplinks to aggregate traffic. Additional considerations include Ethernet broadcast boundaries and limitations, spanning tree or other loop-avoidance technologies. A dedicated management network is a frequent feature of advanced data center virtualization solutions. Most virtualization vendors recommend that hosts be managed via a dedicated network so that there is no competition with tenant traffic and to provide a degree of separation for security and ease of management purposes. This historically implied dedicating a network adapter per host and port per network device to the management network. Managing the network environment in a private cloud can present challenges that must be addressed.
Related: Security Information