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Cisco DNA Prerequisities

What are the prerequisites from a telecommunications and computing environment for deploying Cisco DNA?

For example, is it required that 5G is available?

Are there pre-defined computing environments - e.g. cloud based environment, security parameters or is this more determined by an initial roadmap?

Farhan Mohamed
Cisco Employee

 DNA Center Appliance (DN1-HW-APL) installation as a VM or custom UCS server (NOT SUPPORTED)  Review environmental requirements in Installation Guide and provision for 2 x PSUs.  Network Patch Requirements for each DNAC Appliance : Appliance Management port – CIMC (recommended) ☒ 10Gbit port [enp9s0] - Enterprise Network ☒ 10Gbit port [enp10s0] - Intra Cluster Link ☒ 1Gbit port [enp1s0f0] - Management (optional *) ☐ 1Gbit port [enp1s0f1] - Cloud Update Connectivity (optional *) ☐  Additional Settings for Configuration Wizard:- a) DNS Server IP Address (1 required, 2+ recommended) b) NTP Server IP Address (1 required, 2+ recommended) c) Proxy Server IP Address (required if direct internet access is not available – http proxy only) d) Proxy server port if required e) Proxy server username / password if required Note: * Required only if the Management network and/or the Cloud Update server is not reachable via the Enterprise Network.  DNA Center Cluster a) Cluster Virtual IP Address – Used to connect to the Enterprise Network b) This IP Address should b etaken from the Enterprise Network subnet c) The Cluster Virtual IP must not be same as any of the node IP address (because it floats around the live nodes) 1. Cluster subnet and Service subnet address pool - /21 subnet for each (Range being- /20 to /16 (private ips) d) Used for internal cluster communications and should not conflict with any other IP in the Enterprise Network  For each DNA-C Appliance a) CIMC – Management of the DNAC Appliance hardware (recommended) b) Enterprise Network – Interface that is connected to the Enterprise network c) All DNA appliances should be in the same subnet as the Cluster Virtual IP address (see above) d) Intra Cluster Link – isolated network used for communication between the DNA Center cluster nodes e) All DNA appliances should be in the same VLAN f) Management (optional *) – used for DNA Center management g) Cloud Update Connectivity (optional *) – used to update the DNA Center software Note: The Intra Cluster Link IP address and the Cluster/Service subnet address pools cannot be changed after installation. Installation Best Practices  Always treat DNA-C as a cluster & plan for a “cluster”. a) Standalone box is a “single node cluster”.  Provision for separate intra-cluster link on day 1 a) Changing the intra-cluster link from one interface to another is not supported.  Provision for Cluster Virtual IP on day 1. a) Network Devices will continue to see the same IP when more nodes are added  Use a complete private network for intra-cluster link (no other machines should be in this network).  Use isolated L2 domain (all clusters must be in the same L2 domain).  Ensure < 10ms latency (RTT) across the intra-cluster link.

Thank you, Farhan. This is very thorough.

I have also sent you a mail from, Do respond to that mail as well. I have provided an attachment which will be very useful.

Just reached your post on searching for the network prerequisites for installing DNAC in central DC for branch office fabric. Can you email me a copy of the latest prerequisites?




So there is no RTT requirement between DNAC and fabric nodes(FB, FC and Edge)?
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