Mixed Mode Cisco Unified CM Cluster Requirements

ABDF.

To enable a mixed mode Cisco Unified CM cluster, four requirements are mandatory. These requirements are:

A. Cisco CTL Provider Service activated and enabled: The Cisco CTL Provider Service is responsible for managing CTL files, which are used to secure communications between Cisco Unified Communications Manager (CUCM) clusters. This service must be activated and enabled for a mixed mode cluster.

B. Cisco Certificate Authority Proxy Function activated and enabled: The Cisco Certificate Authority Proxy Function (CAPF) is used to manage certificates for devices such as IP phones and gateways. It must be activated and enabled for a mixed mode cluster.

C. Cisco Trust Verification activated and enabled: Cisco Trust Verification is used to verify the identity of devices attempting to connect to the CUCM cluster. It must be activated and enabled for a mixed mode cluster.

D. Cisco CTL client: The Cisco CTL client is used to manage the CTL files that are used to secure communications between CUCM clusters. It is necessary for a mixed mode cluster.

E. a minimum of one USB e-token: A USB e-token is a device that is used to store the CTL files. At least one USB e-token is required for a mixed mode cluster.

F. a minimum of two USB e-token: Two USB e-tokens are required for a mixed mode cluster if the cluster includes a Cisco Unified Communications Manager Session Management Edition (SME) server.

G. a minimum of one soft e-token: A soft e-token is a software-based device that is used to store the CTL files. At least one soft e-token is required for a mixed mode cluster.

In summary, to enable a mixed mode Cisco Unified CM cluster, the Cisco CTL Provider Service, Cisco CAPF, and Cisco Trust Verification must be activated and enabled. The Cisco CTL client and at least one USB e-token or soft e-token are also required. If the cluster includes a Cisco SME server, two USB e-tokens are required.