Refer to the exhibit. A functioning trunk port Ethernet1/48 exists between two identical Cisco Nexus 5000 Series Switches.
The interfaces on the switches support the MACsec feature and are configured identically. To enable manual MACsec, an engineer adds the configuration shown in the exhibit to both sides of the trunk. The trunk port stops functioning. Which action should be taken to resolve the issue?
A. Disable and then enable the port
B. Enable the license for the trunk ports to support MACsec
C. Lower the MTU value to less than 9216 bytes
D. Configure the PMK with a length of 2048 bytes
A
For the Cisco TrustSec manual mode configuration to take effect, you must enable and disable the interface, which disrupts traffic on the interface.
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/security/513_n1_1/b_Cisco_n5k_security_config_gd_513_n1_1/b_Cisco_n5k_security_config_gd_513_n1_1_chapter_0111.html#task_1232122