As shown in the figure, the use of redundant links between the branch and the headquarters to establish IPsecVPN, while turning on URLPF on the Router_B for traffic from branch l, which of the following options is correct?

- When using IPsec active-standby link redundant backups to enable the URPF function under the physical interface , it is recommended to use URPF loose mode.
- When using IPsec multilink redundant backup, the URPF function can be used under the physical interface, and URPF strict mode can be used
- When using IPsec multilink redundant backups, urPF can be enabled under the tunnel interface, and URPF strict mode can be used
- When using lPsec active-standby link redundancy backup, the URPF function is enabled under the physical interface, and URPF strict mode can be used.
Reveal Solution Next Question