Cryptographic algorithms defined for use with IPsec include:
+ HMAC-SHA1/SHA2 for integrity protection and authenticity.
+ TripleDES-CBC for confidentiality
+ AES-CBC and AES-CTR for confidentiality.
+ AES-GCM and ChaCha20-Poly1305 providing confidentiality and authentication together efficiently.

Explanation/Reference: https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

Cisco's DNA Center is the only centralized network management system to bring all of this functionality into a single pane of glass.
Reference:
dna-center-faq-cte-en.html

Telemetry - Information and/or data that provides awareness and visibility into what is occurring on the network at any given time from networking devices, appliances, applications or servers in which the core function of the device is not to generate security alerts designed to detect unwanted or malicious activity from computer networks. Reference: https://www.cisco.com/c/dam/en_us/about/doing_business/legal/service_descriptions/docs/activethreat-analytics-premier.pdf at any given time from networking devices, appliances, applications or servers in which the core function of the device is not to generate security alerts designed to detect unwanted or malicious activity from computer networks.
Telemetry - Information and/or data that provides awareness and visibility into what is occurring on the network at any given time from networking devices, appliances, applications or servers in which the core function of the device is not to generate security alerts designed to detect unwanted or malicious activity from computer networks. Reference: https://www.cisco.com/c/dam/en_us/about/doing_business/legal/service_descriptions/docs/activethreat-analytics-premier.pdf