An engineer configures Cisco ISE and Cisco Catalyst switches to enforce Cisco TrustSec policies. The engineer must use a nondisruptive deployment approach for new devices by deploying TrustSec…

Configuring Security Group Tag Exchange Protocol (SXP) on new devices enables them to learn and propagate Security Group Tags (SGTs) within the TrustSec domain, allowing participation in SGT-based policy enforcement. Integrating them into the existing TrustSec domain ensures proper application of policies defined in Cisco ISE without disruption across staging, preproduction, and production.

While policy matrices define access rules between SGTs, simply configuring them and assigning devices to matrices does not enable the devices to enforce those policies if SGTs are not properly exchanged and propagated, which SXP facilitates.

Integrating devices into network device groups in Cisco ISE is for management and device classification, but it does not directly enable TrustSec policy enforcement or SGT propagation on the devices themselves.

Configuring a different security group tag for new devices is a policy design consideration, but it does not describe the technical action needed to enable the devices to participate in the TrustSec framework and enforce policies.