topic Re: Network requirements for DNA center in Cisco Catalyst Center

Network requirements for DNA center

rabhati — Wed, 08 May 2019 15:35:24 GMT

What is the maximum acceptable network latency & Jitter tolerance for DNAC to communicate properly with fabric devices over WAN/Cloud.?

Re: Network requirements for DNA center

jedolphi — Thu, 09 May 2019 00:32:37 GMT

Hello,

100ms RTT latency from DNA Centre to managed network device. The numbers may increase later, talk to your product manager if you need more latency, it is possible in *some* scenarios *sometimes*. Not aware of any jitter restrictions. Current (May 2019) latency numbers are documented in the "Cisco SD-Access Network Requirements" section here:

https://community.cisco.com/t5/networking-documents/cisco-sd-access-for-distributed-campus-with-ip-as-a-transit/ta-p/3837284

Best regards, Jerome

Re: Network requirements for DNA center

rabhati — Thu, 09 May 2019 05:54:57 GMT

thanks Jerome for your reply...

Re: Network requirements for DNA center

anantsiv — Tue, 14 May 2019 07:27:58 GMT

Hi For the network the latency should be less than 10ms that can make your equipment function without any hassle

Re: Network requirements for DNA center

rabhati — Tue, 14 May 2019 08:27:02 GMT

Thanks Ananth for looking into this..

Further I would like to know, if the latency required is <10ms then how the devices over WAN can be managed where latency would be always more than 10ms? Or do we need to place a separate controller at each remote site?

Re: Network requirements for DNA center

jedolphi — Tue, 14 May 2019 09:21:38 GMT

Please refer to the link I shared previously:

*It is 100ms RTT for DNA Centre to managed device

*It is 10ms RTT between DNA Centres for clustering

Jerome

Re: Network requirements for DNA center

anantsiv — Wed, 15 May 2019 04:46:48 GMT

Hi Ravinder ,

You can refer to the document which can brief you on your query

Re: Network requirements for DNA center

anantsiv — Wed, 15 May 2019 04:48:02 GMT

Hi Ravinder ,

You can look on to this document that can brief you about your query

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/1-2-8/user_guide/b_dnac_ug_1_2_8/b_dnac_ug_1_2_8_chapter_01100.html

Re: Network requirements for DNA center

ligineapen — Tue, 19 Jan 2021 06:28:31 GMT

I have similar question, for Non SDA scenario, is RTT matters for DNAC to manage devices and feature like SWIM or Assurance to work ?

Re: Network requirements for DNA center

Jonathan Cuthbert — Tue, 19 Jan 2021 18:11:32 GMT

As of this writing: 19 January 2021, here is our guidance.

From Cisco DNA Center to a device it is managing, regardless of the feature or solution used (SDA, Assurance, SWIM, etc):

100 ms RTT recommend.

(up to) 200 ms RTT supported.

We also have this publicly documented on the Cisco DNA Center Data Sheet (Figure 3) for your reference.