Does DNA Appliance only require /21 subnet for Services/Cluster Subnet?

[ccnarc]

DNA appliance need only /21 subnets for Services and Cluster Subnets?

Please clarify me.

Regards
Ravindra

[Pavan Siripuram]

Yes that's correct , refer to below link which provides more details.

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/1-3-1-0/install_guide/M4/b_cisco_dna_center_install_guide_1_3_1_0_M4/b_cisco_dna_center_install_guide_1_3_1_0_M4_chapter_01.html#concept_ig4_1...

[rasullivan]

Is there benefit to adding in a larger subnet? We are building a single node cluster with the XL m5 appliance and will have around 70k clients.

Thank you,

Ryan

[ccnarc]

From my experience from Cisco in last 6 months on DNA, it requires /21 only  to communicate 100's of services that run internally in the DNA Containers which requires such huge /21 subnet.

It is good to take a mail confirmation from your Cisco Account Team before you proceed.

Thanks

[rasullivan]

Thank you