Which two guidelines and limitations of PTP on Cisco NX-OS are true? (Choose two.)
Click on the arrows to vote for the correct answerA. B. C. D. E.
PTP (Precision Time Protocol) is used for synchronization of network devices with a high degree of accuracy, typically in the range of nanoseconds. It is supported on Cisco NX-OS devices, but there are some guidelines and limitations that need to be taken into consideration:
A. PTP supports multicast, unicast, and anycast communication.
This statement is true. PTP supports different types of communication, including multicast, unicast, and anycast, depending on the implementation and network requirements.
B. PTP can be enabled only on F- and M-Series module ports.
This statement is also true. PTP can be enabled only on certain types of ports, such as Fabric and M-Series module ports, which have the necessary hardware capabilities to support PTP.
C. PTP is limitless per network.
This statement is false. PTP has some limitations in terms of scalability, and the number of devices that can be synchronized using PTP is limited. It is recommended to design the network carefully and use hierarchical PTP deployment to avoid scalability issues.
D. Only one PTP process can control all of the port clocks through the clock manager.
This statement is true. Only one PTP process can control all of the port clocks in a network using the clock manager. This process should be configured on the designated master clock device to ensure synchronization across the network.
E. PTP supports transport over UDP. Transport over Ethernet is not supported.
This statement is false. PTP can use different transport protocols, including UDP and Ethernet. Ethernet is commonly used in PTP deployments to provide a reliable and scalable transport mechanism.
In summary, the two guidelines and limitations of PTP on Cisco NX-OS that are true are: