H12-721 Exam Dumps : HCNP-Security-CISN (Huawei Certified Network Professional - Constructing Infrastructure of Security Network)

112. The ESP only verifies the IP payload and can perform NAT traversal, but the ESP encrypts the Layer 4 port information and causes the PAT function to be unusable. This problem can be solved by using the IPSec transparent NAT function, which encapsulates the ESP packet in the UDP header and comes with the necessary port information to make the PAT work normally.

When using the optical bypass interface, the Bypass link has two working modes, automatic mode and forced mode.

After the BFD session is established, the two systems periodically send BFD control packets. If a system does not receive any packets from the peer within the detection time, the status of the BFD session is considered to be Down. Which mode of detection is this mode called BFD?