Cisco Cisco Prime Network Services Controller 3.0 Livre blanc
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Figure 2. Physcial Form-Factor Appliances with Virtual Instances
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Virtual machine form-factor appliances:
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Run as virtual machines (VMs) on a generic (x86) hypervisor server (see Figure 3); for example, the
Cisco ASA 1000v appliance, Cisco Services Router, and others
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Consume its resources (memory, CPU) from the hypervisor server
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Consume its bandwidth from the hypervisor server virtual network interface cards (vNICs) they run on
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Deployed in-band, typically one service appliance per network or few networks; requires dedicated
connectivity from users’ VM vNICs across all hosts (overlay connectivity needed)