Chapter 24. Data Center Access/Aggregation (Nexus 5500/2000) QoS Design
In today’s world of virtualized data centers, the edge of the network is becoming increasingly blurred. For example, virtual server systems like VMware and Hyper-V allow the network edge—and therefore the quality of service (QoS) trust boundary—to be enforced in the virtual machine (VM) hypervisor itself. With the trust boundary being extended toward the hypervisor, traditional data center access/aggregation switches are required to play multiple roles.
For example, when used in the role of an access layer switch, the switch must establish a trust boundary for the data center, in addition to potentially re-marking untrusted traffic. Adding the function of Layer 2 aggregation ...
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