Cisco Cisco Prime Network Services Controller Adaptor for DFA Information Guide
© 2014 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
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Q. Where can I find a Cisco Unified Fabric command reference guide?
A. Go to
Q. What are the scalability limits for Cisco Unified Fabric innovations?
A. Please refer to the verified scalability document at
Q. What is the Open Virtual Appliance (OVA)?
A. OVA is an open standard for packaging and distributing virtual appliances that are deployed as virtual
machines. A virtual appliance is a prebuilt software solution maintained, updated, and managed as a single
piece of software. Cisco Prime DCNM Release 7.0 or later is available in OVA format.
Q. What is a hypervisor?
A. A hypervisor is software or an operating system installed on a computing server that provides an abstraction
layer for hosted virtual machines. Common supported hypervisors include Red Hat Kernel-based Virtual
Machine (KVM), VMware ESXi, Citrix XenServer, and Microsoft Hyper-V.
Q. What is the Open Virtual Switch?
A. OVS is an open virtual switch and is usually installed on the Red Hat KVM hypervisor.
Q. What protocols supplement Ethernet?
A. Ethernet protocol needs additional support from several control protocols to facilitate its work in IP networks.
ARP, GARP, Reverse ARP (RARP), NDP, and IGMP are some of these protocols. End hosts typically
communicate with their respective default gateways as well as other end hosts using such protocols. Typically,
these protocols are terminated at the Layer 2 and Layer3 boundary and do not propagate past their respective
Layer 2 domains. A large number of hosts in a single Layer 2 domain may translate into a very large number
of end-host control-protocol conversations, which creates high levels of CPU utilization on all Layer 2-adjacent
end hosts, appliances, and gateways.
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