Which of the following descriptions of the business chain is wrong?

Which of the following descriptions of the business chain is wrong?
A . In the NSH implementation, the service chain function is implemented by inserting the NSH header into VXLAN packets
B . In the PBR implementation, the controller delivers PBR diversion policy routes to SFF and SC nodes hop-by-hop through NETCONF
C . In PBR implementation, the controller delivers filtering and redirection policies to the SC nodes to selectively redirect service traffic
D . In the NSH implementation, the SF node must support NSH

View Answer

Answer: D

Explanation: